The AHB2 received Stereophile's top "A" rating for power amplifiers.
"Much more apparent low-level detail in already-familiar recordings"
"Sounded more 'right' than any of [the other amps on hand]."
- Kalman Rubinson, Stereophile
"An extraordinary amplifier"
- John Atkinson, Stereophile
"In measuring the AHB2 and attempting to confirm its specified (very) high signal/noise ratio, JA observed nonlinearities in his testing equipment that "haven't affected the measured performance of other amplifiers I've tested, but they were detectable with the AHB2's very low intrinsic distortion and noise." His conclusion: "an extraordinary amplifier.""
"Class A" is Stereophile's highest award for power amplifiers.
"The benchmark combination offers a full range of equipment that can hardly be topped, leaves nothing to be desired in terms of sound, and meets professional requirements without any ifs or buts."
HPA4 - "Has the HiFiMan 100% Under Control"
"The HPA4 has the HIFIMan one hundred percent under control, eliciting neutral timbres, tons of spatial information and crisp dynamics."
AHB2 - "First Choice for Driving Difficult Boxes"
"I connected everything the household had to offer in terms of speakers - Spendor S3 / 5, Ayon Seagull / c, Quad ESL57. It goes without saying that the American coped with the dynamic boxes with ease. But even the quads, which have some meanness on the part of their impedance, did not pose a challenge for the amp."
"In short, it is the best tool and therefore the first choice for everyone who wants to drive difficult boxes to maximum performance without going into personal bankruptcy."
"The Benchmark AHB2 is a very fine sounding, easy to live with, zero-maintenance power amplifier that has enough power for most systems. If more power is needed, two amplifiers configured for mono can provide it."
"The decision to purchase the review sample and make the Benchmark AHB2 a new, long term reference took over a month of listening and comparisons."
"The outstanding musicality of the Benchmark AHB2 takes some time to convince the listener of its wholly musical presentation. This subtle excellence assures long term satisfaction."
"From top to bottom, the design of the LA4 was meant to do one thing; preserve the sonic integrity of the material that passes through it."
AHB2 - "Unrestricted Dynamics"
"Two words immediately came to mind — unrestricted dynamics."
LA4 and HPA4 - "Immediate Emotional Connection to the Music"
"Prior to reviewing these Benchmark components, I had heard the company’s products powering some of my favorite-sounding rooms at several audio shows. Based on what I’d heard at these shows, I was eager to hear how this equipment could perform in my own listening room."
"Listening to the Benchmark gear in my own room, I felt an immediate and gratifying emotional connection to the music I was hearing."
"The LA4 and AHB2 tear down so many of the usual walls that come between the listener and the music."
"If you value transparency and accuracy, the LA4 and AHB2 will perform beyond your highest expectations."
"As soon as everything powered up, there was a big smile on my face."
"With the LA4 in control of the system, everything sounded right, and subtle differences among recordings, amplifiers, and speakers were clear."
"Compared to the other preamps on hand, the LA4 was consistently quieter, more open, and more revealing of detail."
"The LA4 is probably the most transparent and revealing audio component I've ever used."
"It does not seem to leave any fingerprints on the sound. It has a useful array of inputs, outputs, and functions, and the use of sealed relays for volume and input selection assures a long and noise-free life."
"Thanks to the special, discrete analog circuit/relay attenuator, this may be the most transparent line-stage preamplifier in the audiophile world."
"If you got a great-sounding source, the LA4 presents the audio in its original state — with gain or attenuation to the amplifier."
"I have never heard such low-level detail from a pre."
"The better the DAC, the better you hear it through a quality amp and speakers. It is quiet as a top-notch DAC, with S/N exceeding -135 dB and, feature-wise, it comes with unbalanced/balanced I/O and a really slick user interface."
"I use the four-input LA4 for audiophile A/B testing of DACs, monitoring my Hi-Res home recording/editing/mastering projects, as well as just listening how good my vast collection of 24 bit and DSD music sounds through an accurate amp and speakers."
HPA4 - "Rediscovered so Many of My Favorite Works"
"Since the HPA4 arrived, I have rediscovered so many of my favorite works all over again with improved detail retrieval dynamics and transparency that it’s hard to pull myself away!"
"It drove my power hungry Abyss Phi TC headphones with complete authority, but it was still dead silent and nimble enough to amplify my easy to drive Focal Utopia headphones."
"Rarely have I come across such a wonderfully revealing amplifier that can drive many different types of headphones so darn well! The solid build construction and various controls make the price tag seem a bit low based on the other headphone amplifiers in this market space."
"Benchmark Media Systems’ LA4 preamplifier presented an utterly realistic reproduction of what was contained on each recording I played through it -- and weak recordings stood out more than usual. The LA4’s clean, analytical abilities are unmatched by any similarly priced preamplifier I know of. The LA4’s touchscreen brings it up to date with current user interfaces, and permits functions, such as balance control and muting at the device."
"If you want a preamp that editorializes, look elsewhere."
"If, like me, you value a high-resolution, totally neutral musical performance, add a Benchmark LA4 to your system, particularly if you already own a Benchmark DAC."
HPA4 - "Once I Heard it, I Could Not Live Without it"
"You’ll have a tough time finding a cleaner, quieter, more transparent line amplifier and headphone amplifier anywhere, at any price."
"I found it to be a new reference. Once I heard it, I could not live without it, so I purchased the review sample."
"The HPA4 deserves my highest recommendation."
"The HPA4 is the latest product from Benchmark Media Systems, an upstate New York audio manufacturer."
"We think very highly of the products that Benchmark and John Siau, the company's director of engineering, have been launching in the market - and I'm certain our readers share that opinion."
"Benchmark calls it a headphone amplifier, but it’s really two products in one, combining the LA4 Line Amplifier introduced in 2018, with a headphone amplifier. It is also based on the same THX Achromatic Audio Amplifier technology used in Benchmark’s acclaimed AHB2 power amplifier."
"With DAC, preamplifier and power amplifier, Benchmark knows how to build a bridge between the professional sector and home hi-fi. Very beautiful."
HPA4 - "A Whopping Six Watts into 16 Ohms"
"If you value transparent, precise sound, but at the same time want a certain level of comfort and at least a little elegance, you are in good hands with the Americans."
AHB2 - "A High Degree of Precision"
"The DAC3, HPA4 and AHB2 are all characterized by their wonderfully transparent sound and their high degree of precision. At the same time, sufficient amenities are offered to offer adequate comfort. A successful mix."
"If you are looking for a preamplifier/headphone amplifier that you can live with happily for a long time, you should consider the Benchmark HPA4 at the top of your must-audition list."
"TheHPA4combined with the Benchmark AHB2 power amplifier ranks as the quietest rig I've heard (or not heard)."
"Even with the gain up to full with no signal, there is no hiss, hum, or buzz, even when I placed my ears within a in inch of the drivers on 89 dB sensitive loudspeakers."
"As a headphone amplifier, the HPA4 was first rate. Whether it was my most power-hungry headphones, which currently are the new Abyss Diana Phi, or my most sensitive IERs, such as the Empire Ears Phantoms, there was no added noise or lack of adequate gain."
"The BenchmarkHPA4exhibits virtually no noise, whether employed as a stereo preamp or headphone amplifier, and his highly transparent, with no audible colorations."
"Today, is a very special day for me, since I believe I am hearing the best overall performance out of my headphones."
"The distance performance-wise between HPA4 and my second-best headphone amp is Night and Day!"
"This headphone amplifier and line pre-amplifier receives my highest recommendation and scores the highest rank in my book."
"It spoiled me so much, that for the past 3 days I’m waking up at 5 A.M. so I can listen, tap my feet and head-bang just a little bit more. I for one, started saving for one, I’m sorry but I can’t go back to regular amps."
"Without a doubt Benchmark HPA4 is an end-game, top of the line headphone amp – it’s The One to rule them All."