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.

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.

Manufacturer details

  • Power Output: 950W RMS(4Ω per channels,1kHz,THD=1%)
  • Power Output: 570W RMS(8Ω per channels,1kHz THD=1%)
  • Frequency Response: 10Hz-80KHz(+1/-3dB)
  • Gain: ≥28.5dB
  • THD: ≤0.05%(1KHz, normal working)
  • Size: 440x196x440mm
  • Rated Impedance: 8ohm
  • SNR: >105dB(A weight)
  • Channel: 2
  • N.W: 23.7KG
  • Minimum EMF: 2.5V
  • Power Consumption: 1500W
  • Warranty: 1 year
AD-2500PRO is a 2×570W Hi-Fi amplifier for home theater system in the need of high pressure, large dynamic range and high transmission rate. Differential circuits and high power for stunning sound effect.
AD-2500PRO is a 2×570W Hi-Fi amplifier for home theater system in the need of high pressure, large dynamic range and high transmission rate. Differential circuits and high power for stunning sound effect. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.
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:

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Avg. Product Price
$1,001-$2,500
Used For Sale
0
 Available (Scroll Down)
Brand Popularity
281
 of 900+
Badges
Top 50 Brand
Top 250 Brand
Products Listed
58
Founding Year
1992

Our take on the brand

ToneWinner, a leading Chinese audio brand, is best known in the U.S. for its subwoofers and home theater receivers.

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?

As an audio designer, manufacturer, and exporter, Tonewinner has 30+ years of experience in the audio industry with an assortment of power amplifiers, processors, AV receivers, home theater systems, CD players, soundbars, speakers, etc. Tonewinner Audio cooperates with high-end audio component suppliers around the world. Every tiny part is selected and installed smartly for uncompromising quality.

What's your approach to customer support?

Follow the principle that whoever sells is responsible for after-sales. We develop and train professional distributors who can provide guidance and solve sale problems for consumers.

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

YouTube (social media platforms), well-known audio review bloggers, product comparison, and evaluation.

What other products pair best with yours?

From our interview with
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Brand Page

Used

ToneWinner

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What if you spend more?

Product image
McIntosh
MI502
4500
4500
/
4
Reviews

The MI502 2-Channel Digital Amplifier is a flexible component and welcome addition to a custom installed home audio or home theater system. It delivers world renowned McIntosh sound quality at a rate of 500 Watts into 8 Ohm speakers or 800 Watts into 4 Ohm speakers. It uses highly high-tech closed loop digital switching amplifiers and resilient power supplies that produce performance levels seldom heard in custom install audio. The applications are nearly limitless for how to use the versatile MI502 in your home entertainment system. It can be used to power the front left and right speakers in a home theater; to drive two in-wall subwoofers; a pair of MI502s could drive the three front channels of your in-home cinema plus one subwoofer; or to power a pair of outdoor speakers for when the party makes it way outside. Additionally, a stack of multiple MI502s could be used to power the distributed audio speakers installed throughout your home.

McIntosh is one of the most iconic amplifier brands in the world, recognizable for its signature blue LED displays and distinctive industrial design. With a legacy spanning decades, McIntosh is known to many, even outside the audiophile community, and is sold in both mass-market retailers and specialized hifi stores. Their amplifiers are characterized by a warm, tube-like sound that enriches the midrange and smooths out the overall tonal balance.
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Product Strengths

  • Tangible feeling of pure power and speed of delivery
  • Clean, neutral performance
  • Fulsome, fast, and fun sound
  • Thrillingly responsive to the dynamics of a sound mix
  • Drive needed to partner floorstanders hungry for power

Product Considerations

  • Chassis depth is a considerable 533mm
  • Low-end delivery may not be the best compared to some rivals
  • Green/blue aesthetic might not be for everyone

Takeaway: The MI502 is a powerful and responsive amplifier suitable for various applications and it looks good. It offers clean and neutral performance, making it a great choice for someone wanting to get a new amplifier.

Video review

Our take on the brand

McIntosh is one of the most iconic amplifier brands in the world, recognizable for its signature blue LED displays and distinctive industrial design. With a legacy spanning decades, McIntosh is known to many, even outside the audiophile community, and is sold in both mass-market retailers and specialized hifi stores. Their amplifiers are characterized by a warm, tube-like sound that enriches the midrange and smooths out the overall tonal balance.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
Audio by Van Alstine
M750
2799
2799
/
4
Reviews

The DVA M750 monoblock power amplifier is a stunningly musical high-fidelity amplifier that is designed to accurately preserve all of the energy of a live listening experience.

Audio by Van Alstine is a direct-to-consumer hifi brand known for its minimalist design philosophy and unique Single Ended Transistor amplifiers that operate in Class A at normal listening levels and switch to Class AB for higher power needs. The company has a long history of modifying classic audio equipment like Dynaco and Hafler, and continues to design and build their USA-made amplifiers with balanced and differential circuit designs that deliver excellent soundstaging at more accessible prices than comparable equipment.
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Product Strengths

  • Impressive clarity, tighter bass, and more pinpoint accuracy of instruments in the soundstage compared to the SET 600
  • Great dynamic range, definition, and transparency, while maintaining the nuances and details of the original music recording
  • Designed to run cooler and last longer
  • Relative bargain for its performance level
  • Always sounded musical, a presentation which engaged the listener with music rather than calling attention to the gear

Product Considerations

  • A pair of amplifiers can provide enough power to damage almost any speaker system if carelessly used
  • Tone and timbre were not as rich and voluptuous as the reviewer tends to prefer, there seemed to be less meat on the bone
  • One of the five-way speaker binding posts spun when tightening spades, but there were no electrical or other performance issues from that

Comparisons (according to reviewers)

  • Compared to Audio by Van Alstine SET 600, the DVA M750 has more power, a quieter presence, more clarity, tighter bass, and even more pinpoint accuracy of instruments in the soundstage
  • Compared to Pass Labs XA30.8, the M750s are slightly more intense sounding

Takeaway: The DVA M750 Monoblock is a powerful amplifier with finesse and a large, quiet soundstage presented with exceptional clarity. It delivers a compelling and engaging musical experience.

Video review

Our take on the brand

Audio by Van Alstine is a direct-to-consumer hifi brand known for its minimalist design philosophy and unique Single Ended Transistor amplifiers that operate in Class A at normal listening levels and switch to Class AB for higher power needs. The company has a long history of modifying classic audio equipment like Dynaco and Hafler, and continues to design and build their USA-made amplifiers with balanced and differential circuit designs that deliver excellent soundstaging at more accessible prices than comparable equipment.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
ADCOM
GFA-585se
3799
3799
/
2
Reviews

Enormous power at an affordable price is what this amp is all about. A pure class A/B power unit, driven in parallel to deliver 450 watts/channel into 8 ohms with impeccable quality. While developing the new GFA-585se, every single part was put under the microscope to create a better & upgraded version of what is already considered a great component in audio industry.

ADCOM is a hifi brand that pioneered high-current amplifier designs with their GFA-1 model in 1979, and their Nelson Pass-designed GFA-555 became a milestone in budget amplifiers. The brand caters to audiophiles who prefer physical media, offering features like phono stages for vinyl enthusiasts, while maintaining a trade-in program for older ADCOM gear that reflects their commitment to product longevity.
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Product Strengths

  • High power output
  • Great sound
  • Low noise
  • Connectivity options

Product Considerations

  • Lack of protection circuitry
  • Users should never make any changes to input or output connections while the amplifier is turned on
  • Under no circumstances should the speaker terminals be short-circuited or either of the speaker terminal(s) be connected to ground
  • The storage capacitors inside continue to be 'powered-up' for many minutes after it's turned off
  • The Adcom GFA-585se proved to be unstable into a highly reactive load, meaning it is not recommended for use with electrostatic speakers

Takeaway: The Adcom GFA-585se provides a lot of power and great sound for the price. It's a good option for anyone looking for a high-quality amplifier.

Video review

Our take on the brand

ADCOM is a hifi brand that pioneered high-current amplifier designs with their GFA-1 model in 1979, and their Nelson Pass-designed GFA-555 became a milestone in budget amplifiers. The brand caters to audiophiles who prefer physical media, offering features like phono stages for vinyl enthusiasts, while maintaining a trade-in program for older ADCOM gear that reflects their commitment to product longevity.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Product image
ToneWinner
AD-1PA
2975
2975
/
1
Reviews

AD-1PA is a Hi-Fi stereo amplifier with Class A/AB mode, high power transformer, transistors and capacitors. It’s a flagship amplifier which can be perfectly connected with AD-1PRE+ processor. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.

ToneWinner, a leading Chinese audio brand, is best known in the U.S. for its subwoofers and home theater receivers.
Check Amazon
Expand Details

Product Strengths

  • Exceptional build quality with robust metal materials, including a 1,200-watt toroidal transformer
  • Offers Class A, Class AB, or automatic switching between modes for versatile power usage
  • Features two sets of binding posts for easy switching between speakers, beneficial for comparisons
  • Incredibly dynamic, clear, and powerful sound with excellent instrument separation

Product Considerations

  • A heavy amplifier (92 pounds), which may not be suitable for all setups
  • Can generate heat, especially in Class A mode, requiring adequate ventilation or cooling fans

Comparisons (according to reviewers)

  • Vs PS Audio M700 Monoblocks—the AD-1PA offers cleaner instrument and sound separation
  • Vs Nuprime AMG STA—the AD-1PA provides superior clarity and separation compared to the similar Class A/D design of Nuprime

Takeaway: The ToneWinner AD-1PA is a well-built and great-sounding amplifier with features such as switchable speaker outputs and class A/AB modes. It could be worth buying for its impressive sound quality and build, especially for those who enjoy comparing speakers or want a powerful and versatile amplifier.

Video review

Our take on the brand

ToneWinner, a leading Chinese audio brand, is best known in the U.S. for its subwoofers and home theater receivers.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page

What competes at this price?

IOTAVX
AVXP 2-840
2381
/
Released
2022
A simple wisdom in the HiFi industry states: Pure power can only be replaced by even more pure power. And when this enormous power is combined with absolute control, even extremely demanding stereo enthusiasts take notice: The IOTAVX AVXP 2-840 enters the stage of luxurious stereo power amplifiers and delivers a merciless 840 watts per channel at 4 ohms. At 8 ohms, it still delivers an impressive 580 watts per channel.
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IOTAVX is a hifi brand offering exceptional value through its integrated amplifiers, with its SA3 model delivering top-tier audio under $800 and its SA40 model earning near-perfect review scores.
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Our Summary

Video review

Our take on the brand

IOTAVX is a hifi brand offering exceptional value through its integrated amplifiers, with its SA3 model delivering top-tier audio under $800 and its SA40 model earning near-perfect review scores.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
ToneWinner
AD-7300PA+
1575
/
Released
2023
AD-7300PA+ is a 7 channel Hi-Fi amplifier which is specially designed to match the AD-7300HD processor. It is a high end & high power amplifier with multi-protection including overheat, overload, overcurent, overvoltage protection, so as to offer reliable performancce for home theater system.
Check Amazon
ToneWinner, a leading Chinese audio brand, is best known in the U.S. for its subwoofers and home theater receivers.
Expand Details

Our Summary

Product Strengths

  • Impressively well-powered amplifier considering its asking price
  • Can drive 4-ohm loudspeakers
  • Has a refined character that is easy to listen to and addictive
  • Creates a sizeable sonic soundscape
  • Dynamics are delivered with a satisfying level of attack

Product Considerations

  • Power rating of 310 watts per channel is only for two channels driven, with all seven channels working—the power rating drops to 173 RMS watts per channel into 8 ohms
  • Lacks some of the finesse or refinement of better-known brands
  • Weighs 26.3kg, making it a two-person job to move
  • VU meter emits a bright blue light that may not be to everyone's taste, but has a dimming switch

Comparisons (according to reviewers)

  • Vs NAD's M28 or JBL SDL-7120: AD-7300PA+ cannot match the dynamics of these more expensive offerings

Takeaway: The AD-7300PA+ delivers a lot for surprisingly little, producing a wonderfully relaxed and classy sound, with plenty of power on tap. It is a perfect stepping stone into separates, and an upgrade to a home cinema system.

Video review

Our take on the brand

ToneWinner, a leading Chinese audio brand, is best known in the U.S. for its subwoofers and home theater receivers.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Galion
TS A75
1495
/
Released
2024
The performance of this amplifier is so good that you will question whether the significantly more expensive amplifier you are currently shopping for is truly better than this one; for those who prefer XLR, the TS A75 comes with both XLR and RCA inputs.
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Galion Audio designs amplifiers with truly balanced architecture and tube-like sound characteristics, featuring unique controls for feedback levels and tone adjustments that avoid typical tonal discoloration. Their amplifiers are distinguished by robust power supplies with dual toroidal transformers and the ability to switch between Class A and Class AB modes, which is rare in their price range.
Expand Details

Our Summary

Product Strengths

  • Delivers a tube-like sound, with a warm and musical presentation
  • Robust power supply with substantial capacitance (200,000 microfarads) provides good bass control and dynamics
  • Transparent and precise sound, with a wide and deep soundstage
  • Balanced design with both RCA and XLR inputs, the latter offering a cleaner and more dynamic sound
  • Offers excellent value, outperforming other amplifiers in a similar price range

Product Considerations

  • Requires a pre-amplifier to control volume
  • May exhibit slight transformer noise when close to the unit
  • Does not have pop control, requiring caution when plugging/unplugging connections
  • Some reviewers found the logo placement slightly off-center and the blue LED power light too bright
  • Bass control is not as punchy or defined for some tastes, leaning towards a tube-like bass delivery

Comparisons (according to reviewers)

  • The TSA-75 has a different, more flavorful sound signature compared to the Orchard Audio's neutral sound
  • The TSA-75 provides superior micro detail, cleanliness, clarity, and stereo imaging, compared to Schiit Audio Vidar 2
  • Performance is head-to-head with the Denafrips Thalo, depending on sound preference—the more balanced, snappy presentation of the Thalo, or the more V-shaped sound with greater depth and soundstage of the TSA-75
  • The TSA-75 has a distinct sound signature, unlike Emotiva amps
  • The TSA-75 outperforms the McIntosh MC275 Mark VI in audiophile performance

Takeaway: The Galion Audio TS A75 is a well-built amplifier that delivers a warm, tube-like sound with good bass and a wide soundstage. It provides excellent value and is a great choice for those looking for a musical and engaging listening experience.

Video review

Our take on the brand

Galion Audio designs amplifiers with truly balanced architecture and tube-like sound characteristics, featuring unique controls for feedback levels and tone adjustments that avoid typical tonal discoloration. Their amplifiers are distinguished by robust power supplies with dual toroidal transformers and the ability to switch between Class A and Class AB modes, which is rare in their price range.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Schiit
Tyr
1399
/
Released
2022
Tyr is a monstrous, old-skool, crazy heavy, over-the-top mono speaker amplifier. It uses the best of today's and yesterday's technologies to create something totally unique—and It has enough power to run almost anything.
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Schiit Audio, an extremely popular direct-to-consumer hifi brand, specializes in entry-level DACs and amps for both headphones and speakers. Through their distinctive, authentic voice and low-price philosophy, they've built a very loyal customer base.
Expand Details

Our Summary

Product Strengths

  • Robust, effortless power with excellent control makes it easy to drive all speakers with authority and deliver a satisfying listening experience.
  • Balanced and neutral sound, with a solid low end that prevents it from sounding dull or anemic, while also ensuring it is not too aggressive to cause listening fatigue.
  • Excellent timing makes music engaging and foot-tapping, and is particularly impressive with genres such as R&B and soundtracks.
  • Built in the USA, it has a 5 year warranty and 15 day satisfaction guarantee

Product Considerations

  • Not ideal for listeners seeking a romantic, sweet, and smooth midrange, or those who prefer a very lively sound.
  • The amp required careful system matching to achieve its full potential, particularly needing a high-end preamp to unlock greater refinement and resolution.
  • Bass performance might be seriously challenged by more modern amplifiers.
  • There is a slight differential in gain

Comparisons (according to reviewers)

  • Compared to Emotiva A1s, the Tyr has more bass, more clarity in the bass, and is less veiled overall
  • Reminiscent of McIntosh 7270—the Tyr gives off similar 'Mac vibes'.

Takeaway:

The Schiit Tyr monoblocks deliver a lot of power and control, making music sound good with a balanced and neutral style. It's a great option for an amplifier that can handle almost any speaker and is versatile.

Video review

Our take on the brand

Schiit Audio, an extremely popular direct-to-consumer hifi brand, specializes in entry-level DACs and amps for both headphones and speakers. Through their distinctive, authentic voice and low-price philosophy, they've built a very loyal customer base.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page
Topping
DX9
1299
/
Released
2023
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Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Expand Details

Our Summary

Product Strengths

  • Breathtaking design with curved corners, symmetrical front faceplate, and a glass component revealing internal circuitry
  • Powerful headphone amplifier capable of outputting up to 10W at 16Ω and 7W at 32Ω
  • Good sound quality, described as clean, detailed, and punchy, with a balanced tonal presentation
  • CNC machined aluminum remote control with rubber buttons
  • Multiple inputs and outputs, including 6.35mm, 4.4mm, and 4-pin XLR outputs on the front, and optical, coaxial, AES, IIS, USB, and Bluetooth on the back, with RCA and XLR outputs for lineout and preamplifier lineouts

Product Considerations

  • Glass top panel gets hotter than the aluminum housing
  • The glass panel is a fingerprint magnet and requires cleaning regularly
  • No analog line-in to pair the amplifier with 3rd party DACs
  • No streaming capability via WiFi or LAN
  • Some menu navigation can be cumbersome, requiring cycling through options rather than direct selection

Comparisons (according to reviewers)

  • Compared to the Topping A90 and D90 stack, the DX9 has similar inputs, outputs and power, but the stack is more versatile, as the amp and DAC can be used separately— the DX9 has additional coaxial and optical inputs, and the sound is somewhat similar
  • Compared to the HIFIMAN EF400, the DX9 has more inputs/outputs and more power, but the EF400 sounds warmer
  • Compared to the Topping D90SE, the DX9 sounds more fun, its bass and midrange has more energy and oomph, but the D90SE is more transparent, though ultimately quite flat
  • Compared to the AURALiC Altair G2.1, the DX9 sounds cleaner and better separated, with a small reduction in digital hash

Takeaway: The Topping DX9 is a beautiful and powerful all-in-one DAC/amp that offers a clean and detailed sound, making it suitable for both headphone and speaker setups. Its versatility and attractive design make it a compelling option for those seeking a high-quality audio solution.

Video review

Our take on the brand

Topping Audio is a measurement-focused hifi brand that developed its own proprietary PSRM DAC architecture and NFCA amplifier topology to achieve exceptionally low distortion levels. Their products, from the flagship D90 III Discrete DAC to entry-level interfaces like the E2x2, use advanced technologies like custom I/V conversion stages and high-feedback Class B designs to deliver clean, accurate sound reproduction.
Website author headshot
Julian Shapiro
ExtremeHiFi Writer
Product Page
Product Page

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