Reviews

AHB2 - Receives Stereophile's Highest "A" Rating for Power Amplifiers

"Benchmark's AHB2 makes use of THX Corporation's Achromatic Audio Amplifier (AAA) technology, in which a low-power feed-forward amplifier drives a low-bias class-AB output section."

- Stereophile, 2023

"Much more apparent low-level detail in already-familiar recordings" - Kalman Rubinson

"A tonal balance that sounded more 'right' than any of [the other amps on hand]." - Kalman Rubinson

"An extraordinary amplifier." - John Atkinson

LA4 - Receives Stereophile's Highest "Class A" Rating for Preamplifiers

"Benchmark's usual approach to design is to out-spec the competition, and so it is here. Like other Benchmark equipment he has tested, the affordable LA4 challenged the resolution of John Atkinson's test instruments, with 'superb' channel separation, 'extremely low noise, and virtually no power-supply-related spuriae.'"

"Benchmark's LA4 is the widest-bandwidth, widest-dynamic-range, lowest-noise, lowest-distortion preamplifier I have encountered." - John Atkinson

"In his listening room, Kalman Rubinson compared the LA4 to a cable—and couldn't hear any difference. He concludes, '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.'"

- Stereophile, 2023

DAC3 HGC, DAC3 B - Receive Stereophile's Highest "Class A+" Rating

"The DAC3 B is a stripped- down, lower-priced version of the DAC3 HGC, which omits the headphone amplifier, balanced and unbalanced analog inputs, volume, mute, and polarity controls." - Stereophile

"The DAC3 was all about depths, in several respects...I heard deeper into the music."

"All I can say is Wow!"

- John Atkinson

"In a Follow-Up, JCA wrote of using the Benchmark processor with the same company's AHB2 power amp—a combination of high source output voltage and modest amplifier gain that he describes as 'optimal for minimizing noise and distortion' —and reported hearing 'richer and more interesting' reproduction of very subtle details."

- Stereophile

HPA4 - Receives Stereophile's "Class A" Rating for Headphone Amplifiers

"The HPA4 adds a THX888 amplification stage to Benchmark's LA4 line preamplifier  to allow it to drive even low-impedance headphones with aplomb."

"It keeps the LA4's balanced and single-ended preamplifier outputs and adds a headphone output on a 4-pin XLR jack and a single-ended headphone output on a 1/4" jack."

- Stereophile, 2023

"The HPA4 showed each instrument in dramatic bas-relief. It accomplished this by presenting cleaner, better-articulated bass and manufacturing a sharper midrange focus than I had experienced previously with either my solid state reference, the Pass Labs HPA-1, or the tubed Linear Tube Audio Z10e." - Herb Reichert

"The LA4 preamplifier was the widest-bandwidth, widest-dynamic-range, lowest-noise, lowest-distortion preamplifier I had encountered at that time. . . . To those virtues, the HPA4 adds equally superb balanced and single-ended headphone outputs." - John Atkinson

DAC3 HGC - "Does Not Color the Sound of Your Audio"

"It is a studio-grade piece of audiophile equipment that can be used by recording engineers and mastering artists alike to flesh out all the musical detail they wish without having to worry about the sonic signature of their equipment."

"In the audiophile world, utilizing the DAC3 HGC properly can bring realistic texture, voice, and integrity to instruments that would normally take a DAC well over five-figures to do."

- Michael Zisserson, FutureAudiophile.com

Why Did You Buy Benchmark Gear?

"I'm asking because clearly Benchmark is a highly regarded company here, and plenty of ASR members own Benchmark amplification/DACs."

"We know they are top of the heap in terms of measured performance, outdoing plenty of the competition in terms of typical distortion measurements."

- @MattHooper, Forum Member

Some of the Replies:

"I bought the AHB2s because I liked the sound from the get-go and the excellent measured performance was a great confirmation. I also like the size/weight."

- @Kal Rubinson, Forum Member, Stereophile Reviewer

"Been using Benchmark since the DAC1 came out."

"So far the only thing to displace a Benchmark product has been newer upgraded Benchmark products."

- @SoundGuy, Forum Member, AudioScienceReview.com

"AHB2, LA4, DAC3 ... Would I do it all again? Absolutely."

- @KellenVancouver, Forum Member

Comments from Amir's AHB2 Test Report:

"The Benchmark AHB2 breaks new ground with respect to performance of power amplifiers."

"The Benchmark AHB2 gets my strongest recommendation."

- Amir Majidimehr (@amirm), Forum Founder/Admin

DAC3, AHB2 - Driving Note Line Array

"The afternoon before the start of the show I ran into John Siau of Benchmark Media Systems. He says to me quietly, “make sure you stop in our room, we have a surprise!” With curiosity suitably piqued, Co-Editor Jim Clements and I paid a visit ..."

"The results were pretty astonishing. A stable, enveloping stereo image that was devoid of any distortion whatsoever."

- Carlo Lo Raso, Secrets of Home Theater and High Fidelity

DAC3 B and AHB2 - Driving Laufer Teknik Note Line Array

Two AHB2 bridged-mono amplifiers were driving the 4-Ohm line arrays (48 drivers per side).

"Sound was extremely well-integrated and controlled, and the bass memorable."

"The Note received signal through Benchmark Media's AHB2 power amps, DAC3 B D/A processor, and interconnects."

Two DAC3 B Converters - One for the Array, and One for the Subs

Two AHB2 Power Amplifiers - Bridged Mono Mode - One per Array

"The system sounded super on a 16/44.1 file of the famed rendition of Copland's Fanfare for the Common Man, recorded by Eiji Oue and the Minnesota Orchestra for Reference Recordings."

- Jason Victor Serinus, Stereophile Magazine

DAC3 B, AHB2, Note Line Array - "Most Immersive Listening Experience"

"The most immersive listening experience I had the entire show."

"There is no sweet spot because everywhere is the sweet spot. Even behind the speakers sounded incredible!"

"SVS Subs doing the low end work and Benchmark 380 watt class H monoblocked amps driving the arrays."

"I spent an extended amount of time in this room."

- LongLiveAnalog, r/audiophile on Reddit

DAC3 B - Receives Stereophile's Highest "Class A+" Rating

"I never auditioned the DAC3 HGC in my own system, so when I got an opportunity to borrow a sample of the DAC3 B, I eagerly agreed."

"I had been using MBL's network-connected N31 CD player/DAC ($18,680 with Roon Ready module) before installing the DAC3 B."

"The MBL offers an excellent sense of drive and low-frequency impact, but when I replaced it with the Benchmark, both these aspects of the music seemed enhanced."

"Whether it was an orchestral bass drum or a kickdrum, electric bass guitar or acoustic double bass, the MoFi speakers seemed to acquire more low-frequency weight without losing definition."

- John Atkinson

AHB2 - Stereo Times "Most Wanted" Award

"Merriam-Webster defines a benchmark as "something that serves as a standard by which others may be measured or judged." This is what the AHB2s has become for me."

"A pair of AHB2s are now part of my dedicated summertime amplification for my Sound Lab 545PX loudspeakers."

- Don Shaulis, The Stereo Times

AHB2 - "Found a Home in My System"

"I was led to Benchmark Media Systems through recommendations from Roger West, the designer of Sound Lab speakers. Praise from a local Sound Lab dealer and a local Sound Lab owner effectively twisted my arm to the point where I yielded to temptation to try the amplifiers ..."

"The Class-H Benchmarks give me what I wanted from Class-D amplifiers, but with the musical engagement, I found lacking in Class-D. There is the added benefit of a company that has been in business for over 36 years and has a depth of products, and offers an extended warranty."

"The highest compliment I can pay a piece of audio equipment is that it has found a home in my system. A pair of AHB2s are now part of my dedicated summertime amplification for my Sound Lab 545PX loudspeakers."

"The Benchmark performance continues to engage me, and the company gives me confidence in long-term support."

- Don Shaulis, Stereo Times

AHB2 - "I love, I love, I love my Benchmark Power Amps!"

- Theo Nicolakis, Audioholics Online A/V Magazine

Theo uses a pair of AHB2 power amps in bridged mono (480 W into 6 Ohms) to drive a pair of Revel Ultima Salon2 loudspeakers ($20,000/pair). This is his reference amplifier-speaker combination.

Watch the video to find out why he loves his AHB2 amplifiers:

DAC2, HPA4, AHB2 - "The Benchmark Hi-Fi Stack ..."

"Find a Better Hi-Fi Stack! Double-Dog-Dare you!"

- Ron, NewRecordDay.com

AHB2 - "Reveals All"

Jay discusses the sonic tradeoffs between transparency and the sound of tube-induced distortion. He describes how his tube amps may make poor recordings sound enjoyable while the AHB2 reveals all.

HPA4 - "Speeding Up My Work, Helping Me Make Better Decisions"

Award-Winning Composer, Ken Jacobsen, Talks About His Benchmark HPA4

"I don't think it is sterile sounding at all ... it is very neutral."

"In the studio, neutral, flat and detailed are on the top of my list."

"The HPA4 is speeding up my work, helping me make better decisions."

 - Ken Jacobsen, Ken Jacobsen Music

HPA4, LA4 - "Pro Audio Products in the Home"

HPA4 vs. LA4

"The HPA4 and LA4 are preamplifiers and largely identical. The HPA4 also has a built-in headphone amplifier."

"The Benchmark HPA4 and LA4 preamps deliver a very high quality neutral and transparent signal."

"Developed from a professional focus on sound reproduction, they bring the essence of the recording closer to the listener."

"The professional market often offers products that may also be of interest to the 'ordinary' consumer."

"In Japan in particular, home systems often consist of a mix of consumer equipment and (vintage) professional items."

"Benchmark was founded in 1983 and started building professional audio equipment."

"The goal, from the outset, is to build sound-transparent equipment of the highest quality. The employees are musicians, audiophiles and audio technicians. So sound quality is top notch."

- Ruud Jonker, FWD Magazine, fwd.nl

LA4 - "Joining My Stable of Reference Components"

"Before I dig into the sound of the LA4 it is important to know that it employs a wide bandwidth design. The LA4’s bandwidth is specified at 0.2 Hz to 500 kHz."

"Most of the wide bandwidth designs I have heard exhibit ... a purity in tone with superb timing and speed ... the LA4 proved to be no exception."

"The Benchmark LA4 yielded a change that was quickly apparent in several areas."

"Notably were; bass, upper midrange, treble, low-level listening, and the ability to distinguish the colorations of other components that were contributing to my overall sound."

"Acoustic guitar, piano, and harmonica among many other instruments are presented with speed, clarity, and coherency that made them sound more “present” in the room and less like a recording."

"The Benchmark LA4 is simply the most transparent, least colored, and most revealing component I have had in my system to date. I look forward to it joining my stable of reference components."

"Highly recommended."

- Ken Redmond, The Audio Beatnik

AHB2 - "I Purchased Two Units With My Hard-Earned Money"

"The highest compliment I can give to AHB2 is that I purchased not one, but two units with my hard-earned money. These weren’t loaner units and this wasn’t a sponsored review and you can draw your own conclusions."

"The AHB2 might look small and lightweight, but thanks to its clever engineering and power supply implementation, this little fellow could still deliver 190 Watts in 4 Ohms and 100 Watts in 8 Ohms, while maintaining an undetectable noise floor and distortion."

"For the craziest folks out there, you can even bridge two pieces together for ~580 Watts in 4 Ohms and 380W in 8 ohms."

- Sandu Vitalie, SoundNews.net

LA4 - "Best Volume Control"

"By far, without question this is the best volume control I have ever encountered."

"I must single out for special mention the volume control. While the whole unit is completely relay controlled, with a total of forty “precision relays switching high-precision metal-film resistors,” each channel has its own gain control with 256 steps in 0.5dB increments."

"Suffice it to say that, as with every Benchmark product I’ve used or reviewed, everything works smoothly, precisely, flawlessly."

- Paul Seydor, The Absolute Sound