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
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Clean look and straightforward use
- Neutral amplifier that allows the music to pass through
- Fast, punchy, and crisp, especially in the mid-bass and bass range, bringing new life to rock tracks
- Allows one to hear the humanness of the musicians playing, making it more than just a mechanical reproduction of music
- There are two preamp outputs, meaning it can be used as a preamp with a separate power amp and also hooked up to a powered subwoofer
Product Considerations
- Minimalist, and its cabinet looks cheap and is grossly finished
- Soundstage tends to be a tad forward
- While powerful, 50 watts may not be sufficient for loud listening or hard-to-drive speakers
- One reviewer would like more bass extension (first octave) and better bass articulation (first octave)
- Does not have a built-in D/A converter
Comparisons (according to reviewers)
- Vs Rega I-O: Opens up more and has more musicality
- Vs Atoll IN80: Smoother, sweeter, and less aggressive
Takeaway: The Atoll IN-50 Signature is a musical amplifier that sounds right and lets the music flow, making it fun to listen to. For those who like a minimalist design and want a neutral sound that allows one to hear the soul in the music, this amplifier is worth considering.
Compared to their other products
We think it's helpful to understand how this product fits into the brand's full lineup (below). To learn more about these products, visit the brand's page.
Read the reviews
IN50 Signature
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Manufacturer's notes
- Output power Wrms/8Ω: 2×50 W
- Output power Wrms/4Ω: 2×70 W
- Power supply: 170 VA
- Total of capacitors: 17,874 µF
- Number of inputs: 5+1 BY-PASS
- Preamp outputs: 2
- Bandwidth: 5 Hz – 100 kHz
- Rising time: 2.5 µs
- Input impedance: 357 kΩ
- Sensitivity: 100 mV
- Signal/Noise ratio: 100 dBA
- Distortion rate at 1 kHz: 0.05% / 10 W
- Dimensions: 440×305×95 mm
- Weight: 7 Kg
Our take on the brand
Used
Atoll
What if you spend a bit more?
Most tube integrated amps and preamps use a solid state op-amp chip for running headphones. Stand alone tube headphone amps will vary in quality like any other tube amp. Headphones are simply small speakers that require less power. Some amps will use smaller output tubes that groan to have enough dissipation to run power-hungry planar headphones. Other brands, including those costing $5,000 or more like Mal Valve, will use larger output tubes, then use a voltage divider network to drop the power down to an acceptable level for headphones. This is how we do it. We simply took advantage of the fact that we make the best tube integrated amplifiers. Now you don't have to pay for a separate state of the art headphone amp. PrimaLuna integrateds are the favorite of owners who use everything from Audeze to Hifiman to Sennheiser!
PrimaLuna engineers wanted to make owning a tube amp so simple you would have no excuse not to have your tube dreams come true. If a tube fails, Adaptive AutoBias will instantly put the amplifier into protection mode so no parts can get damaged. A red LED will light up in front of the tube that needs replacing. Simply plug in another tube, and listen. No guesswork. No smoking amp. No getting out the soldering iron or dropping your amp off at UPS.
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Our Summary
Product Strengths
- Combines the tonal qualities of tubes with the power of solid-state amplification, combining the great aspects of both technologies
- Delivers a clean, detailed, dynamic, and musically insightful sound
- Well-built with high-quality components, including point-to-point wiring in the preamp section
- Includes a headphone amplifier powered by the same internal amp as the speakers, not an op-amp
- Multiple inputs and functions, including home theater bypass, subwoofer output, and tape output
Product Considerations
- Lacks balanced inputs and a pre-amplifier output
- The volume control can be very sensitive at low levels
- Optional MM phono stage requires additional purchase
- Requires good ventilation due to running warm
Comparisons (according to reviewers)
- Versus Cambridge Audio Edge NQ / 2 x Gold Note PA-10 setup, the EVO 300 Hybrid delivers a level of engagement that was captivating, the improvement over the normal setup slightly disconcerting
- Versus Schiit Jotunheim, the PrimaLuna bested it, with a slightly cleaner sound that let a touch more detail through
Takeaway: The PrimaLuna EVO 300 Hybrid offers a balance of tube warmth and solid-state power to give listeners the best of both worlds. Its detailed sound, robust build, and versatility make it a worthwhile addition to any audiophile's system.
Video review
Our take on the brand
The R8 series includes three different versions that use three different types of vacuum tubes for AB1 class push-pull power amplification. Additionally, it features two 6SL7 tubes and two 6SN7 tubes for signal amplification and driving. The pre-stage voltage uses a single 6SN7 tube for a filtered power supply, achieving an output power of 40W/45W per channel.
R8 – EL34 This design uses four EL34 vacuum tubes for AB1 class push-pull power amplification. Additionally, it features two 6SL7 tubes and two 6SN7 tubes for signal amplification and driving. The pre-stage voltage uses a single 6SN7 tube for a filtered power supply, achieving an output power 40W per channel.
R8 – KT88 This design uses four KT88 vacuum tubes for AB1 class push-pull power amplification. Additionally, it features two 6SL7 tubes and two 6SN7 tubes for signal amplification and driving. The pre-stage voltage uses a single 6SN7 tube for a filtered power supply, achieving an output power 45W per channel.
R8 – EH6550 This design uses four EH6550 vacuum tubes for AB1 class push-pull power amplification. Additionally, it features two 6SL7 tubes and two 6SN7 tubes for signal amplification and driving. The pre-stage voltage uses a single 6SN7 tube for a filtered power supply, achieving an output power 45W per channel.
The R8 features handcrafted point-to-point welding construction. The chassis and transformer cover are finished with high-grade piano lacquer for a refined appearance. It includes an external, independent BIAS ADJ current monitoring gauge and a 30-second mute delay function. It also has a headphone output feature, ALPS motorized potentiometer, full remote control functionality, and pure power amp input capability, allowing connection to an independent preamp signal input. Additionally, it features an external TUBE SEL for KT88/EL34 vacuum tube swapping, offering triode and ultra-linear function selection. In triode mode, the sound is soft, pure, and smooth, suitable for enjoying vocals and string music. In ultra-linear mode, the sound is open, exuberant, and powerful, ideal for appreciating large-scale, dynamic music.
The body is made from aviation-grade aluminum alloy with piano paint. The external independent BIAS ADJ current display meter and current adjustment points. High-grade ALPS motorized potentiometers made in Japan. CNC-machined copper terminals plated with gold are aimed at further noise reduction and upgrades.
Our Summary
Product Strengths
- Impressive build quality and design for the price, with quality parts and point-to-point hand wiring, which is rare these days
- Versatile amplifier integrates into different systems due to the ability to use KT88, EL34, or 6550 tubes
- Offers a choice between triode and ultralinear modes, which can be switched on the fly, and it makes a big difference in sound
- Delivers a wide soundstage with good stereo imaging and a 3D holographic presentation
Product Considerations
- Bass, especially with KT88 tubes, can be strong and might benefit from more nuance, EL34 tubes offer a better balance
- Treble can be a little bright or have a hard edge in the upper midrange, especially with revealing speakers, although this can be addressed with tube rolling
- The remote control is functional but noisy, and the volume steps may not allow for fine adjustment
- May not be suitable for those who listen at very loud volumes, as the sound can harden up at higher levels
- Stock tubes are good, but tube rolling can significantly enhance and fine-tune the sound
Comparisons (according to reviewers)
- Vs PrimaLuna Evo 300: The R8 sounds just as good, if not better, and is built just as good, if not better, but at a fraction of the price
- Vs McIntosh 152: Some reviewers preferred the sound of the R8 over the McIntosh 152 despite the significant price difference
- Vs McIntosh 252: Some reviewers found the R8 better than the McIntosh, especially in ultralinear mode
- Vs Exposure 2510: The R8 offers similar detail and refinement to the Exposure 2510 but surpasses it in acoustic body, tonal richness, scale, and dynamics
- Vs Line Magnetic 219ia: The R8 brought back memories of the Line Magnetic 219ia but had more gusto and oomph while retaining much of the magic
Takeaway: The Willsonton R8 is a versatile and great-sounding tube amplifier that offers exceptional value, making it a worthwhile purchase for those seeking a tube sound experience without breaking the bank. It can enhance the sound of speakers and allows for music enjoyment in a more engaging manner.
Video review
Our take on the brand
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Our Summary
Product Strengths
- Very fine sense of detail, especially in the midrange and treble
- Forward presentation makes instrumentalists and vocalists seem to step out in front of the speakers
- The controls have a luscious feel
- The amplifier is beautifully made with that thick gleaming fascia exciting unequivocal admiration
- Rhythmic nuances and microdynamics propelled musical lines along with foot tapping gusto
Product Considerations
- There's a small degree of hum from the mains transformer
- Can be fatiguing to listen to for long periods, especially with aggressive recordings
- Lacks the last word in texture and extension in the bass
- Doesn't present sharply defined three-dimensional images
Comparisons (according to reviewers)
- Vs Blue Circle BC3/BC3.1 and Muse 150 monoblock amps, EAR 834 has softer and less extended bass, slightly less overall detail and clarity, and a somewhat foreshortened soundstage
- Vs E.A.R. 802 preamp combined with a CLASSÉ CA 100 amplifier, the 802/CA 100 combination was quite similar in sound to the 834
Takeaway: The EAR 834 is beautifully made, looks great, and has a special sound that can really draw you into the music and make you feel like you are there. It is an integrated amplifier with a design that invites extended listening sessions.
Video review
Our take on the brand
The Orchestra displays stainless steel chassis with tubes mounted on ceramic sockets with golden pins. It has 4 EL34 tubes mounted in push-pull which are driven by 2 ECC83.This is the result of a very thorough study undertaken by Jadis with one main objective: to make a product with all the essential qualities of a high-end device at a reasonable price.
Our Summary
Product Strengths
- Beautiful object with its own style, unmistakably a Jadis.
- The fit and finish is up to high standards.
- Not overly romantic and not analytical, sitting right in the sweet spot, it has clarity and transparency.
- The amp's workmanship is robust and exquisite.
- Produces a big sound that's rich, warm, full-bodied and strongly profiled.
Product Considerations
- Adjusting bias is best left to a qualified technician.
- The amp has a natural tendency to roll backward unless grasped firmly.
- Straight out of the box, the Jadis was a little rough.
- Limited absolute power output.
Comparisons (according to reviewers)
- Vs Jadis Orchestra Reference MkII integrated amplifier: The Orchestra Black is a budget version of the Reference with slight internal and external changes to improve the sound and reduce the price.
- Vs Musical Fidelity: The Jadis, a 40-watt valve amp, sounds better than spec suggests.
Takeaway: The Jadis Orchestra Black is a beautiful and well-built amplifier that delivers a smooth, clear, and natural sound. It is a great option for those curious about tubes, with a rich tonal bloom.
Video review
Our take on the brand
What else competes at this price?
Our Summary
Product Strengths
- Open, neutral, and extremely rewarding sound quality
- Excellent phono stage and headphone amplifier
- Beautifully made with a solid build quality
- Transparent sound allows the listener to shape the system's character
- Integrated amp can be partnered to double down on transparency or to shape the system you want
Product Considerations
- Remote control can be a bit difficult to use in low light
- Offers less functionality compared to some rivals at the same price point
- Some reviewers found certain performances to be slightly cool
- Volume adjustments with the remote control could be more sophisticated
Comparisons (according to reviewers)
- The MOON 250i v2 sounds more open than the MOON 600i v2
- The MOON 250i V2 is not as tactile in the treble region, when compared to Naim Nait XS 3
- The MOON 250i V2 has more bite in the treble region, when compared to Exposure 3510
- The Pass Labs amplifier has a more transparent—involving sound, when compared to the MOON 250i V2
Takeaway: The MOON 250i v2 is a well-made amplifier that delivers transparent sound quality suitable for various audio systems and listening preferences. It is a great choice for those looking for quality audio reproduction without needing all the latest digital features.
Video review
Our take on the brand
Our Summary
Product Strengths
- Builds upon the foundation of its predecessor, the SV-500, by adding HDMI and Bluetooth connectivity
- Features a hybrid vacuum tube and solid-state design, combining tube warmth with solid-state power
- Integrated DAC supports digital input signals, and a built-in Bluetooth module supports modern codecs like aptX and AAC
- Offers versatility by functioning as a standalone preamplifier or DAC, in addition to being an integrated amplifier
Product Considerations
- The omission of a phono pre-amplifier is a mistake
- Absence of a subwoofer output feels like another lost opportunity
- The trademark Vincent porthole that allows one to see inside the amplifier and the glowing tubes is also not part of the package
Comparisons (according to reviewers)
- Vs Vincent Audio SV-737: The SV-500 MK may not offer the power of the SV-737, but 50 watts might be enough for a lot high-sensitivity bookshelf and floor standing loudspeakers
Takeaway: The SV-500 MK is a versatile amplifier with modern features like HDMI and Bluetooth, combined with the classic warmth of tubes. Its hybrid design and multiple functionalities make it worth considering for those seeking a balance of old and new.
Video review
Our take on the brand
Our Summary
Product Strengths
- Detail-oriented, airy and open sounding, digging out plenty of details and quick transients
- Bassline has weight, a decent amount of grunt and punch, creating a nice contrast to the open and brighter upper section
- Dual mono construction with two separate power supplies to transformers and then circuitry that's separate for each channel
- Dynamic and engaging, it has grunt and kick and it is not flat sounding
- Well-built and feels very sturdy with a front panel made of thick aluminum and the rest of the casing is bent metal
Product Considerations
- IN100 leans on the bright side, and with some pairings it can become too hot
- Careful speaker pairing is needed
- Paying additionally for a remote control is a drawback
- Integrated digital module brightness may be noticeable and observable
Comparisons (according to reviewers)
- Vs Rega Brio: IN100 has a more substantial bassline with a firmer grip, greater dynamics, and better instrument separation
Takeaway: The Atoll IN100 is a good sounding amplifier and reveals tons of details, while having a weighty bassline. With careful pairing, it can bring tons of fun and enjoyment to the listening experience.
Video review
Our take on the brand
Our Summary
Product Strengths
- Delivers a vividly detailed and balanced sound, handling complicated mixes with skill
- Able to extract a lot of information from digital audio files with apparent ease
- A volume lock prevents accidental volume adjustments when the device is in a pocket or bag
- Extensive specification including Bluetooth 5.4 with aptX Lossless compatibility and multiple inputs/outputs for versatile connectivity
Product Considerations
- Some reviewers feel the device is not very pocket-friendly due to its size and sharp edges, making it better suited as a transportable—rather than a truly portable—device
- The gain is set too high, making precise volume control difficult, especially with sensitive IEMs
- Using IEMatch adds output impedance, which can negatively affect the tonal balance and dynamics of some IEMs
- The length of the included USB-C cable is short, making it difficult to position the device on a desk
Comparisons (according to reviewers)
- Compared to the iDSD Diablo 1, the Diablo 2 offers slight sonic improvements and better build quality, but at a higher price
- Compared to the iDSD Signature, the iDSD Signature is considered by some to offer a better result for less money, with a more realistic instrument and vocal timbre, larger soundstage, and customizable features like crossfeed and bass boost
- Compared to the FiiO Q7, the iDSD Diablo 2 has a vivid sound, where the FiiO Q7 has a smooth and wide sound
Takeaway: The iDSD Diablo 2 is a powerful and versatile DAC/amp that enhances headphone listening with its detailed sound and extensive features. It is a good choice for users who want a high-quality audio experience on the go or at their desk.
Video review
Our take on the brand
Our Summary
Product Strengths
- Joyful sound signature with detailed output
- Can power a wide range of headphones, due to Ultima technology
- Compact design, stacks perfectly with the Qutest and Huei
- Employs trickle-down Ultima technology to allow delivery of enormous peak current outputs
- Solid build quality using CNC-milled aluminum casework and good heat dissipation
- Connectivity options include headphone and speaker outputs
Product Considerations
- No gain switch for the headphone output
- Default gain level a bit high for sensitive IEMs
- More power limitations with speakers than headphones—best for smaller, efficient speakers or nearfield listening
- Runs hot, requiring good ventilation
- The volume control feels a little wobbly and might be difficult to use in a very precise way, and there is some channel imbalance at very low volumes
Comparisons (according to reviewers)
- Qutest/Anni pairing justifies its price premium thanks to a more composed and insightful presentation that offers notably more low-end authority, dynamic punch and tonal richness
- Cyrus ONE HD is plusher, showing that Anni has strong niche appeal
- The iFi xDSD Gryphon has digital inputs and built-in DAC, while Anni can power speakers
Takeaway: The Chord Electronics Anni is a compact and well-built amplifier that delivers a joyful and detailed sound, making it a great addition to a desktop setup for headphone and nearfield speaker listening. Its use of trickle-down Ultima technology ensures high-quality performance in a small package, and its ability to stack with other Chord devices makes it a good choice for those already invested in the ecosystem.
Video review
Our take on the brand
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
Magazine reviewers and YouTubers have tried this product—so we've summarized their strongest opinions below.
Product Strengths
- Clean look and straightforward use
- Neutral amplifier that allows the music to pass through
- Fast, punchy, and crisp, especially in the mid-bass and bass range, bringing new life to rock tracks
- Allows one to hear the humanness of the musicians playing, making it more than just a mechanical reproduction of music
- There are two preamp outputs, meaning it can be used as a preamp with a separate power amp and also hooked up to a powered subwoofer
Product Considerations
- Minimalist, and its cabinet looks cheap and is grossly finished
- Soundstage tends to be a tad forward
- While powerful, 50 watts may not be sufficient for loud listening or hard-to-drive speakers
- One reviewer would like more bass extension (first octave) and better bass articulation (first octave)
- Does not have a built-in D/A converter
Comparisons (according to reviewers)
- Vs Rega I-O: Opens up more and has more musicality
- Vs Atoll IN80: Smoother, sweeter, and less aggressive
Takeaway: The Atoll IN-50 Signature is a musical amplifier that sounds right and lets the music flow, making it fun to listen to. For those who like a minimalist design and want a neutral sound that allows one to hear the soul in the music, this amplifier is worth considering.
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