HPA4 and AHB2 Review - Fidelity Online
HPA4, AHB2 - "No Ifs or Buts"
"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"
"Two very different headphones were used to check the capabilities of the corresponding output on the benchmark pre: my ultra-light, electrically undemanding Grado SR80, which regularly has a sound that is far too good for the price range, and a HIFIMan Sundara, an officially high-end magnetostat."
"The benchmark shows what it's capable of..."
"The HPA4 has the HIFIMan one hundred percent under control, eliciting neutral timbres, tons of spatial information and crisp dynamics."
"My current favorite record, Origami Harvest by the American jazz trumpeter Ambrose Akinmusire, whose mix of hard rap, classic string quartet and eruptive jazz combo is not for beginners, flows so neatly into the ear that it is a pleasure."
"If the design goal was to construct a reinforcing piece of wire, then it has been achieved."
"Operation via the touchscreen and the level control that switches a record-breaking resistor network is fun and at the same time gives you a pleasant studio feeling - at least if you mean the same thing as I do by “studio”, namely precision, control, perfect reproducibility and absolute reliability."
AHB2 - "First Choice for Driving Difficult Boxes"
"When the decision was made one day to bring the first regular power amplifier onto the market, the requirements were clear: What was needed was maximum energy efficiency, low distortion at the limit of the measurable, and no sound of its own."
"It is indeed an achromatic enhancer, pure as a spring wind. A spring wind with power."
"The AHB2 is a class H amplifier in which a switched-mode power supply supplies a class AB circuit and, thanks to the variable voltage supply, reduces power consumption enormously."
"The basis of the circuit is a combination of negative feedback with the extremely efficient, but far seldom used principle of interference suppression by means of feedforward error correction. In German this is called “Mitkopplung” and means - to put it very briefly - the supply of the phase-inverted distortion component to the output signal."
"It amplifies the signal supplied and otherwise stays out of everything."
"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."
- Michael Vrzal, Fidelity Online
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The Bricasti M3 is a great example of that performance in a $6,000 DAC."
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LA4 Review - Mike Prager, FutureAudiophile.com
"Benchmark Media Systems made its reputation in both pro audio and audiophile circles by designing gear with extraordinarily low noise and distortion, and selling it at reasonable prices."
"What Makes the Benchmark LA4 Preamp So Special?"
"A high-quality volume control is much of what makes a superior preamp shine, and the Benchmark’s volume control is outstanding. The Benchmark LA4 uses a bank of precision resistors switched by gold-contact relays to set volume in 256 steps of 0.5 decibels each."
"If accurate reproduction is your wish, you won’t find a preamp with meaningfully better objective performance than the Benchmark LA4, especially one made in the United States at anything near the LA4’s price."
"Very few preamps at any price reach the LA4’s level of objective performance."
"On the subjective end of things, the Benchmark LA4 preamp puts the lie to the old audiophile myth that neutrality means clinical, cold, or sterile sound. Instead, here neutrality means musical, involving sound, with precise, stable imaging, a sense of space (if one is on the recording), and exceptionally truthful timbres."
- Mike Prager, FutureAudiophile.com
AHB2 Review - Mike Prager, Future Audiophile
"For years, the audio world acknowledged one main contender (at least at sub-five-figure pricing) for the quietest, cleanest, most neutral power amplifier around. That was the Benchmark AHB2, whose specifications are still, for all practical purposes, unsurpassed, even by today’s excellent Class-D amps."
"10 years after its release, the Benchmark Media Systems AHB2 stereo power amp is still a standard-bearer in clean, neutral sound in the audiophile world."
"I greatly enjoyed having a pair of AHB2s in my system – their purity, neutrality, and seemingly unlimited power provided a clear window on the music and a lot of joy."
"I especially appreciated the AHB2’s smooth, well-integrated treble, free of splashiness or grain, and its natural reproduction of the human voice."
- Mike Prager, Future Audiophile