Website author headshot
Cameron Oatley
ExtremeHiFi
Website author headshot
Julian Shapiro
ExtremeHiFi

Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.

What reviewers think

Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.

Product Strengths

  • 100 watts of A/B class power per channel into 8 Ohms
  • Benefits from elements of Naim's flagship Statement technology, like the soft start
  • Balanced topography with balanced XLR inputs, these cables are provided
  • Intelligent heat sink and a fan system removes heat from the circuit board with 7-speed settings
  • New eddy current slot exists between the two speaker outputs to reduce the braking effect on power output

Product Considerations

  • The new Naim look may not be to all tastes
  • A hum was present that was audible when near the unit

Comparisons (according to reviewers)

  • Compared to older NAP 250 models, the New Classic NAP 250 has a greater bass response
  • Compared to the NAP 250 DR, the latest NAP 250 is more of a groove monster

Takeaway: The NAP 250 is a well-built, powerful amplifier that delivers a rhythmic and engaging listening experience. Its advanced features and elegant design make it a great choice for audiophiles who want both performance and style.

What are hifi reviews useful for? (1) Identifying products you should demo in person at a dealer. (2) Learning which products reviewers unanimously praise as the best they've heard (this means they probably are legitimately great). (3) Identifying a product's attributes that satisfy your idiosyncratic needs and tastes. Beyond that, we often discount what reviewers say because they heap praise on most products—and are often apprehensive about publishing strong criticism or comparisons between products. Further, they seldom have more than a few products on-hand, often relying on their memories to compare past products. Always listen for yourself.

All

NAP 250

reviews

[{"title":"Naim NAP 250 review","link":"https://www.whathifi.com/reviews/naim-nap-250","source":"What Hi-Fi?","datePublished":"2023"},{"title":"Naim Classic 200 Series NAP 250 power amplifier","link":"https://www.stereophile.com/content/naim-classic-200-series-nap-250-power-amplifier","source":"Stereophile","datePublished":"2023"},{"title":"Naim NSC 222 and NAP 250 Review","link":"https://www.avforums.com/reviews/naim-nsc222-and-nap250-review.21100","source":"AVForums","datePublished":"2023"},{"title":"Review Naim Classic 200 series – NSC222 – NAP250 and NPX300","link":"https://www.alpha-audio.net/review/review-naim-classic-200-series-nsc222-nap250-and-npx300","source":"Alpha Audio","datePublished":"2024"},{"title":"Naim Audio NSC 222, NPX 300 and NAP 250 streaming preamp/power supply/power amplifier","link":"https://hifiplus.com/articles/naim-audio-nsc-222-npx-300-and-nap-250-streaming-preamp-power-supply-power-amplifier","source":"Hi-Fi+","datePublished":"2023"},{"title":"Naim New Classic and the rhythm divine","link":"https://the-ear.net/review-hardware/naim-new-classic-and-the-rhythm-divine","source":"The Ear","datePublished":"2023"},{"title":"Naim Audio New Classic NAP 250","link":"https://hifiandmusicsource.com/2024/04/naim-audio-new-classic-nap-250","source":"HiFi and Music Source","datePublished":"2024"},{"title":"Naim New Classic System: NSC 222 streaming pre-amplifier, NAP 250 power amplifier, NPX 300 power supply Review","link":"https://hometheaterhifi.com/reviews/all-in-one-systems/naim-new-classic-system-nsc-222-streaming-pre-amplifier-nap-250-power-amplifier-npx-300-power-supply-review","source":"Secrets of Home Theater and High Fidelity","datePublished":"2023"},{"title":"Naim NSC 222, NAP 250","link":"https://www.sound-advice.online/product-reviews/naim-nsc-222-nap-250-review","source":"Sound Advice","datePublished":"2023"},{"title":"Is GREAT SOUND Enough? New Classic 200 🔊 Naim Audio System Review","link":"https://www.youtube.com/watch?v=dRwrwB1qEgQ","source":"Andrew Robinson","datePublished":"2024"},{"title":"Naim NCS 222, NPX 300 & NAP 250","link":"https://www.youtube.com/watch?v=60oB83vJMkk","source":"TheEarOnline","datePublished":"2024"},{"title":"Review: A Naim New Classic Stack—NAC 332 Preamplifier/NPX 300 Power Supply/NAP 250 Power Amplifier","link":"https://twitteringmachines.com/review-a-naim-new-classic-stack-nac-332-preamplifier-npx-300-power-supply-nap-250-power-amplifier","source":"Twittering Machines","datePublished":"2024"}]
An excellent review of a great product
/
Publisher
/
3/1/2022
An excellent review of a great product
Publisher
/
3/1/2022

Manufacturer details

  • Input signal for clipping: 1 VRMS
  • Crosstalk: 60 dB
  • Damping factor in 8Ω: 36.0000
  • THD+N: at 2/3rds full power 8 @1kHz (0.013%)
  • Power Output: 100 Watts 8Ω @0.1% THD+N
  • Power consumption standby: < 0.5W
  • Consumption normal use: 26 W
  • Depth: 31.75 cm (12.5 in)
  • Height: 9.15 cm (3.62 in)
  • Width: 43.2 cm (17 in)
  • Weight: 16.8 kg (37.04 lb)
First appearing in 1975, the NAP 250 power amplifier has become an iconic product. Its aesthetic and technical evolution has ensured its sustained first-rate performance over the years, creating unforgettable musical experiences. The new sixth generation model delivers more power than ever. Its ultra-modern technology provides unrivalled performance and system flexibility.
Manufacturer Site

Brand highlights

Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:

  • Naim devices, such as the Uniti Atom HE and Mu-So 2nd Generation, employ a fully-featured streaming platform that extends from their entry-level products to their flagship ND 555 player.
  • The brand uses oversized, beautifully lit volume knobs as a central design element across various product lines, contributing to a tactile user experience.
  • Their products are designed to be aesthetically flexible and to be easily incorporated into both high-end and real world listening environments.
  • Naim designs components with the potential for future upgrades, such as adding external power supplies, enabling long-term use.

Uniti Atom

  • Positioning: The entry-level all-in-one streaming amplifier in the Naim lineup.
  • Description: Features a compact design and high-quality sound, making it ideal for small rooms or as a secondary system. It features a 40W per channel amplifier and supports a wide range of streaming services, offering versatility similar to the Uniti Star but at a lower power output and without CD playback capabilities. This makes it a great choice for those with a moderate budget who prioritize streaming and connectivity over physical media.

Uniti Star

  • Positioning: Sits in the middle of the Uniti range, offering more features than the Atom but less than the Nova.
  • Description: Combines streaming capabilities with CD playback and ripping, which the Atom lacks. It delivers 70W per channel, providing a more powerful sound suitable for larger rooms or those seeking a more dynamic audio experience.
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Avg. Product Price
$5,001-$10,000
Used For Sale
318
 Available (Scroll Down)
Brand Popularity
8
 of 900+
Badges
Top 50 Brand
Top 250 Brand
Products Listed
28
Founding Year
1973

Our take on the brand

Naim Audio is renowned for its distinctive "Naim sound," which focuses on timing accuracy and a unique harmonic distortion profile that creates a musical flow. The brand's meticulous approach involves extensive R&D and proprietary components like custom transistors and power supplies, as seen in their Uniti range which combines streaming capabilities with their signature sound characteristics.

Look inside the brand

Brand Page

Our interview with the brand

What are two key technological innovations or strong opinions that differ you from other brands?

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What are your favorite tracks for showcasing the strength of your products?

What other products pair best with yours?

From our interview with
.
Brand Page

What if you spend more?

Product image
Chord Electronics
Ultima
15375
15375
/
8
Reviews
Chord Electronics designs and manufactures all their products in Great Britain, setting themselves apart by using proprietary FPGA technology instead of off-the-shelf DAC chips found in most competitors' products. Their DACs and portable audio devices, featuring distinctive color-changing buttons and portholes, deliver studio-grade performance through unique technologies like the Watts Transient Aligned filter, which provides more natural and detailed sound reproduction.
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Expand Details

Product Strengths

  • Offers a remarkably smooth, unforced, and natural presentation with a touch of warmth
  • Excels in detail retrieval and textured presentation of instruments and vocals, making the music feel alive
  • Presents a wide and holographic soundstage, especially when paired with speakers that are already strong in this area
  • Demonstrates agility, precision, and clarity, combined with a naturalness that eluded earlier generations of Chord amplifiers
  • Scales dynamically and has the ability to punch hard when required

Product Considerations

  • Has a minimalist design with just four line-level inputs, lacking features like phono stages, tone controls, headphone outputs, or DAC modules
  • Some may find its sonic signature prioritizes articulation over qualities such as richness and authority, potentially sounding thin if partnered poorly
  • Balance control has no center indent or marked position
  • The polychromatic lighting may be an issue for the color-blind
  • Remote operation can be affected by direct sunlight

Comparisons (according to reviewers)

  • Vs Rega Elex-R Mk3, the Chord Ultima Integrated delivers undeniably elevated sound in all respects, with greater dimensionality and smoother vocals
  • Vs Bryston 7B 3 monoblocks, the Chord Ultima Integrated offers a weightier and more thunderous delivery, especially in the midrange and vocals, with more inner warmth in tone
  • Vs Benchmark AHB2, the Chord Ultima Integrated provides a more energetic and fun listening experience, with Thor-like bass impact and overall superior dynamics
  • Vs Accuphase E-270, the Chord Ultima Integrated is warmer, rounder, more powerful, and refined, with a more fluid and emotionally engaging performance

Takeaway: The Chord Ultima Integrated is a unique and well-built amplifier that combines a visually pleasing design with a captivating sound, full of detail and dynamic precision. It brings music to life with an engaging and immersive experience, making it a worthy addition to any audiophile's setup.

Video review

Our take on the brand

Chord Electronics designs and manufactures all their products in Great Britain, setting themselves apart by using proprietary FPGA technology instead of off-the-shelf DAC chips found in most competitors' products. Their DACs and portable audio devices, featuring distinctive color-changing buttons and portholes, deliver studio-grade performance through unique technologies like the Watts Transient Aligned filter, which provides more natural and detailed sound reproduction.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
AGD
Duet
11500
11500
/
7
Reviews

The AGD DUET Monoblock Amplifier, is the newest addition to our state of the art Hi-End Power Amplifiers family. The AGD DUET is our first compact Monoblock Amplifier utilizing 100% Gallium Nitride Power MOSFET design for both the output power stage and the power supply.

AGD Productions uses GaN (Gallium Nitride) technology in their amplifiers, which are housed in glass tubes reminiscent of classic vacuum tubes, delivering high power from a compact size with near-perfect square waves. The amplifiers are designed to be upgradeable as technology advances, with GaN modules that can be replaced, while handling complex impedance loads similar to high-end Class-A or SET tube amps.
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Expand Details

Product Strengths

  • Compact size, lightweight, and runs cool compared to traditional high-end amplifiers
  • Exceptionally quiet operation, with reviewers noting a complete absence of hum or buzz
  • Delivers a clean, crisp, and neutral sound signature without added coloration
  • Upgradeable design, allowing users to update the amplifier with new GaN modules as technology evolves
  • Produces a Single Ended Triode-like midrange and top end

Product Considerations

  • The polished finish is a fingerprint magnet, requiring the use of gloves for handling

Comparisons (according to reviewers)

  • Vs AGD Audion MKIII: The Duets offer a cleaner and more refined sound with improved bass and greater immediacy and snap compared to the Audion MKIII
  • Vs Daniel Hertz Maria: The AGD Duets seem to have a little more inner resolution
  • Vs Pass Labs X250.8: The AGD Duets performed to a higher level
  • Vs Peachtree GaN 1/VTV GaN amps: AGD amps seem to be on another level in regards to design, and the sound is more refined and beautiful
  • Vs Aavik U-150, Luxman 595, Yamaha A-S 3200, Axxess Forte 1, Line Magnetic 219ia: The AGD Duets performed to a higher level

Takeaway: The AGD Duet amplifiers offer a blend of cutting-edge technology, exceptional sound quality, and user-friendly design. They are a great option for those seeking a high-end audio experience in a compact and energy-efficient package.

Video review

Our take on the brand

AGD Productions uses GaN (Gallium Nitride) technology in their amplifiers, which are housed in glass tubes reminiscent of classic vacuum tubes, delivering high power from a compact size with near-perfect square waves. The amplifiers are designed to be upgradeable as technology advances, with GaN modules that can be replaced, while handling complex impedance loads similar to high-end Class-A or SET tube amps.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
ASR
Emitter II
18750
18750
/
6
Reviews

The Emitter II models are considered by real music connoisseurs and uncompromising audiophiles to be the ultimate in amplifier construction. Almost purely by hearsay, a music-addicted and ever-growing fan base has developed worldwide, which has realized its dream of a concert hall in its own home. 

Powered by two separate power supplies, the most sophisticated loudspeakers and elaborately constructed dynamic converters are driven to peak sound performance. With an Emitter II Basic, music unfolds in the full dynamic range. From the breath to the slightest rustle on the stage to the power of the full orchestra, the Emitter II Basic reproduces all tones neutrally, powerfully, energetically, with high resolution and unadulterated in the listening room. 

Especially at peak levels at concert volume, the playback and spatial imaging remain absolutely stable. Quiet listeners also rave about the noticeable and very pleasant energy in the sound, which makes the music a relaxing and pleasant experience even at low levels.

ASR Audio's Emitter II Exclusive amplifier creates a vast, tube-like soundstage and three-dimensional presentation without tube colorations, while maintaining exceptional transparency and a low noise floor. The brand stands out for its emphasis on measurements and scientific analysis in audio equipment evaluation, often sparking debates between measurement-focused and subjective listening-focused audiophiles.
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Product Strengths

  • Known for combining the musicality of tube amplifiers with the precision and power of solid-state amplifiers.
  • It provides a transparent sound with steel control, without the electronic 'shine' associated with transistor amplifiers.
  • Exceptional bass performance, described as deep, explosive, and completely controlled.
  • Homogeneous frequency range, offering a very high degree of transparency and control.
  • Offers an ability to resolve even the finest musically significant details.

Product Considerations

  • Requires a substantial amount of space due to its multi-component design.
  • The sound offered might be 'too beautiful' for some listeners, as it is not 'brutal' or 'terse' enough.
  • Requires care in using its switches to avoid shutdowns.
  • Some reviewers note it was 'dark sounding' on the highs, though it did not lack information.

Comparisons (according to reviewers)

  • Compared to Quad ESL loudspeakers, it surpasses the musicality and clarity achieved with many tube amps, rivaling even high-end options like Lamm Industries ML2.2 and Miyajima Laboratory 2010.
  • The ASR has better bass and is more transparent than MBL, however, it lacks the grace that MBL offers.
  • Compared to Rogue 180W monoblocks, the ASR Emitter II delivers better bass.
  • The ASR Emitter II has slightly better bass control than Manley Neoclassic 500, but the Neoclassic 500 has a more marvelous style of fiddling.
  • Compared to Edge and Audio Research, the ASR is darker sounding.

Takeaway: The ASR Emitter II Exclusive offers a combination of tube-like warmth and solid-state precision, making the listening experience a very involving one. It provides exceptional control and detail across the entire frequency range, making it a great choice for audiophiles.

Video review

Our take on the brand

ASR Audio's Emitter II Exclusive amplifier creates a vast, tube-like soundstage and three-dimensional presentation without tube colorations, while maintaining exceptional transparency and a low noise floor. The brand stands out for its emphasis on measurements and scientific analysis in audio equipment evaluation, often sparking debates between measurement-focused and subjective listening-focused audiophiles.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
Audio Research
Reference 80S
18500
18500
/
6
Reviews
Audio Research is a hifi brand that has stayed committed to tube technology while many competitors moved to solid-state designs. The brand is known for its use of KT150 power beam tetrodes and hybrid power supply designs that blend tube amplification with solid-state regulation.
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Expand Details

Product Strengths

  • Delivers power while handling subtlety and fine detail with aplomb
  • Presents an engaging and naturally organic soundstage
  • Offers switchable Ultralinear and Triode tube configurations
  • Hand-wired, hand-soldered, and hand-assembled
  • The top end is silky, resolved, and decent, resulting in no listening fatigue

Product Considerations

  • The bass is not that punchy as with the best high-end amplifiers
  • The amplifier can be demanding towards the acoustics of the room due to its heavy-on-bottom balance
  • Limited power handling that does not allow for playing too loud
  • The 80S sounds more homogenous, although the listening is rewarding and entertaining
  • Ensure existing speakers will work with the Reference 80S to satisfaction before purchase

Comparisons (according to reviewers)

  • Vs Simaudio Moon 860A v2 power amplifier, the voice of Hana was warmer and velvetier through the Audio Research—a bit more human for my ears—although the sound was slightly less transparent and less controlled

Takeaway: The Audio Research Reference 80S is a tube power amplifier that delivers precision and subtlety. If high-end audio is desired and a lot of power is not necessary, the Reference 80S could be a good fit for a listening space.

Video review

Our take on the brand

Audio Research is a hifi brand that has stayed committed to tube technology while many competitors moved to solid-state designs. The brand is known for its use of KT150 power beam tetrodes and hybrid power supply designs that blend tube amplification with solid-state regulation.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page

What competes at this price?

Naim
NAP 350
8499
/
Released
2023
Drive large and demanding loudspeakers with a pair of NAP 350s. Designed to effortlessly capture the true dynamics of music; this highly dynamic amplifier offers a precise musical performance.
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Naim Audio is renowned for its distinctive "Naim sound," which focuses on timing accuracy and a unique harmonic distortion profile that creates a musical flow. The brand's meticulous approach involves extensive R&D and proprietary components like custom transistors and power supplies, as seen in their Uniti range which combines streaming capabilities with their signature sound characteristics.
Expand Details

Our Summary

Product Strengths

  • High current delivery effectively drives demanding loudspeakers
  • Combines pace, rhythm, timing, and dynamics with improved imaging and stage depth
  • Superb drive, impressive bandwidth, detail, and power maximize loudspeaker performance
  • Low noise floor
  • Handsome looking with an illuminated Naim logo
  • Only accepts interconnects terminated with an XLR
  • Custom Naim loudspeaker connectors work best with Naim cables

Product Considerations

  • Compact but heavy, the NAP 350 monoblocks weigh 36.4 pounds each

Takeaway: The NAP 350 is a powerful and handsome amplifier that offers superb drive. It maximizes loudspeaker performance, making music exciting to listen to.

Video review

Our take on the brand

Naim Audio is renowned for its distinctive "Naim sound," which focuses on timing accuracy and a unique harmonic distortion profile that creates a musical flow. The brand's meticulous approach involves extensive R&D and proprietary components like custom transistors and power supplies, as seen in their Uniti range which combines streaming capabilities with their signature sound characteristics.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Primare
A35.8
5247
/
Released
2022
The A35.8 is Primare's most powerful and flexible multi-channel amplifier, designed to serve the needs of virtually any high-performance multi-channel system through its ability for each pair of channels to be bridged to mono for an incredible level of power delivery and system building options, including 1500 watts of total output in a fully bridged bi-amped stereo configuration.
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Primare is a Scandinavian hifi brand whose UFPD 2 Amplification technology provides a consistent 26dB feedback loop gain across the entire audio range, making their amplifiers exceptionally stable and accurate. Their modular design approach lets users customize their systems by adding or upgrading components like DACs and network modules.
Expand Details

Our Summary

Product Strengths

  • The A35.8 provides eight channels of 'unimpeachable Class D power in a fairly compact and very flexible package'
  • Flexible configuration options for power output to speakers are available, such as bi-amping and bridging
  • Each stereo pair can be bridged separately to make four times 375 watts (8 Ohms) from the eight times 150 watts
  • Fault-free sound quality
  • High quality fit and finish
  • The A35.8 offers flexible connectivity options

Product Considerations

  • The 20-amp power inlet is the seldom-seen variety with three horizontal blades
  • The speaker output posts are spaced too widely for dual-banana plugs
  • Cabling can be tricky
  • A high current power cord is needed
  • Lower gain is present, though this doesn't necessarily need to be an issue

Comparisons (according to reviewers)

  • Vs NAD M28, the A35.8 gets you one more channel and more versatility for a 10% price increase
  • Vs Benchmark AHB2, the Benchmark presented a more neutral tonal balance and undistorted soundstage
  • Vs NAD C 298 stereo amplifiers, the Primare seemed slightly more forward, often conveying an appealing liveliness

Takeaway: The A35.8 power amplifier is a flexible and versatile product worth considering for anyone seeking a high-quality multi-channel setup. Its ability to bridge channels offers many ways to configure your speaker system.

Video review

Our take on the brand

Primare is a Scandinavian hifi brand whose UFPD 2 Amplification technology provides a consistent 26dB feedback loop gain across the entire audio range, making their amplifiers exceptionally stable and accurate. Their modular design approach lets users customize their systems by adding or upgrading components like DACs and network modules.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
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EAR Yoshino
EAR 890
6351
/
Released
Push-pull power amplifier using eight KT90 output valves (four per channel). 70 Watts per channel stereo (bridgeable to 140 watts mono) into 4, 8, or 16 ohms. Self-biasing design with Balanced or unbalanced input.
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EAR Yoshino is a British hifi brand where each product is handmade from start to finish by a single engineer, with their amplifiers featuring a unique balanced bridge mode output stage design that assigns separate windings to each electrode on the output transformer. Their tube-based equipment, inspired by founder Tim de Paravicini's professional recording studio experience, is used by renowned artists like Pink Floyd and Mobile Fidelity Sound Labs.
Expand Details

Our Summary

Product Strengths

  • The EAR 890 produces 70Wpc in stereo, and can be bridged to 140W in monoblock
  • Neutral sound that gets out of the way and lets the user enjoy the music
  • Complex and dense music textures are handled with ease, and dynamically demanding passages are sailed through
  • Articulate midrange
  • Detailed and realistic bass

Product Considerations

  • Removing/installing tube cages is difficult and time-consuming
  • The loudspeaker binding posts are positioned too close to the output transformers, making it hard to tighten them properly
  • Some assembly work appeared amateurish, specifically the use of silicone in various locations, such as fastening chassis wires
  • The amplifier can operate quite hot
  • May not have as much bass impact compared to solid state amps

Comparisons (according to reviewers)

  • The EAR 890 monoblocks achieve SET-like definition along with the authority and swagger necessary for most full-size speaker systems, when compared to Cary Audio 300B SET amps
  • The EAR 890 is as textured as the top LAMM designs, but with noticeably better neutrality and more power
  • The EAR 890 surpassed the deHavilland KE50As with a more articulate midrange, producing more color and separation in the microtones of instruments

Takeaway: The EAR 890 is easy to set up and sounds good with very little tweaking, making it easy to just sit back, relax, and enjoy the music. It's a good choice for people who want a tube amp that is both musical and powerful for their home listening experience.

Video review

Our take on the brand

EAR Yoshino is a British hifi brand where each product is handmade from start to finish by a single engineer, with their amplifiers featuring a unique balanced bridge mode output stage design that assigns separate windings to each electrode on the output transformer. Their tube-based equipment, inspired by founder Tim de Paravicini's professional recording studio experience, is used by renowned artists like Pink Floyd and Mobile Fidelity Sound Labs.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Parasound
Halo A51
5749
/
Released
The Parasound A51 is a high-powered five-channel amplifier designed to bring your home theater system to life. Delivering 250 watts per channel at 8 ohms, the A51 ensures powerful, clean, and dynamic sound across all five channels. This amplifier is THX Ultra2 certified, providing exceptional performance for even the most demanding speaker systems.
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Parasound amplifiers are a favorite among hi-fi dealers because they offer a ton of power and performance without hitting crazy price levels. Designed by John Curl, their hifi and home theater amps are known for clean, neutral sound and an ability to power just about any system with ease. Sure, you can find better amps, but they come with serious diminishing returns. For a lot of people, Parasound hits that sweet spot where you feel like you’ve reached the endgame without spending a fortune.
Expand Details

Our Summary

Product Strengths

  • Delivers amazing quality of sound and detail
  • Bulletproof amplification
  • Has a rhythmically soulful sound with a tremendously rich and natural midrange
  • The A51's bass is well-defined, extremely textured, and robust
  • With 250 watts on tap, the Parasound A51 will power virtually anything

Product Considerations

  • Due to its class A/AB design, the A51 does get a bit warm and should be installed in a properly ventilated space and/or rack
  • The A51 is large and heavy, and is best moved and/or positioned by two people

Comparisons (according to reviewers)

  • Compared to Rotel, the Rotel makes the M&K Sound system slightly bright with a bit of sibilance, while the Parasound is more neutral
  • Compared to Acurus A250, the Parasound had tighter bass, which is probably attributed to a better damping factor

Takeaway: The Parasound Halo A51 is a high-performance amplifier with great sound quality, detail, and build quality, making it an excellent choice for audiophiles and home theater enthusiasts. Its ability to deliver power and control to speakers makes it a valuable addition to any high-end audio system.

Video review

Our take on the brand

Parasound amplifiers are a favorite among hi-fi dealers because they offer a ton of power and performance without hitting crazy price levels. Designed by John Curl, their hifi and home theater amps are known for clean, neutral sound and an ability to power just about any system with ease. Sure, you can find better amps, but they come with serious diminishing returns. For a lot of people, Parasound hits that sweet spot where you feel like you’ve reached the endgame without spending a fortune.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
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Product Page
AGD
Tempo di GaN
5500
/
Released
2021
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AGD Productions uses GaN (Gallium Nitride) technology in their amplifiers, which are housed in glass tubes reminiscent of classic vacuum tubes, delivering high power from a compact size with near-perfect square waves. The amplifiers are designed to be upgradeable as technology advances, with GaN modules that can be replaced, while handling complex impedance loads similar to high-end Class-A or SET tube amps.
Expand Details

Our Summary

Product Strengths

  • GaN technology allows for efficient power usage, with 94% of energy being turned into sound
  • Compact size challenges the notion that high-quality amps need to be large
  • Design and packaging create pride of ownership
  • It can be run in bridged mode to deliver 400 watts into one channel
  • Stability and ability to handle complex impedance loads

Product Considerations

  • The slight sonic signature may not be for everyone
  • If truly outrageous amounts of power are needed to drive speakers, a second AGD Tempo amp might be needed to run in a bridged configuration
  • High-frequency noise was discovered when XLR cables were not connected between them
  • Power cords can make a large difference, the included power cord doesn't flatter the amp
  • Some traditionalists may find it hard to accept that it's a Class-D amplifier

Comparisons (according to reviewers)

  • Compared to Peachtree Audio GaN400, the AGD Tempo reports to have better overall specifications
  • Compared to Parasound Halo A21+, the AGD Tempo is simply superior
  • Compared to Bricasti M30 monoblock amplifiers, the level of which the most subtle detail exists approaches reference Bricasti M30 monoblock amplifiers

Takeaway: The AGD Productions Tempo is a cutting-edge amplifier that offers a new take on audiophile amplification and rivals more expensive amplifiers. It can drive speakers easily while being energy efficient.

Video review

Our take on the brand

AGD Productions uses GaN (Gallium Nitride) technology in their amplifiers, which are housed in glass tubes reminiscent of classic vacuum tubes, delivering high power from a compact size with near-perfect square waves. The amplifiers are designed to be upgradeable as technology advances, with GaN modules that can be replaced, while handling complex impedance loads similar to high-end Class-A or SET tube amps.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page

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