2. amps-preamps
  3. 133419-26

Benchmark AHB2 amplifier - what to expect?

My current amplifier, driven by Benchmark DAC3 HGC, is Rowland model 102.  It is basically couple of Icepower 200ASC modules packed into resonance free heavy case, with additional input differential amp THAT1200.  These modules were used in many small class D amps, including Bel Canto S300 and M300.  I feel that Benchmark AHB2 might be a good choice for few reasons:

- It matches my Benchmark DAC3 (electrically and physically) 
- It has neutral sound, that I like, with very low noise floor (according to reviews)
- It could possibly extend trebles a little more  (trebles are slightly veiled now).

My speakers are Hyperion Sound HPS-938, (a giant killer), but not too many people are familiar with them since company went bankrupt few years ago.  They tend to sound warm (soft dome tweeter), with wonderful midrange.

I'm looking for anyone familiar with AHB2 and class D amps.  I found favorable review of AHB2 vs NAD M22, but it might not apply to my situation since M22 is based on different modules (Hypex).  My birthday is coming in a month and I could buy myself a present.  I will be grateful for any comments.


128x128kijanki
kijanki's avatar
kijanki OP
4,428 posts
 
John Siau said that warm sound is great for voice or guitar but bad for instruments that have more complex harmonic structures than simple overtones.

His exact quote:
Personally, I do not like what warm sounding equipment does to the sound of a piano. Warmth is wonderful on vocals, guitars and certain instruments, but it beats against the streched overtones of a piano. The overtones in a piano occur at slightly higher than harmonic ratios, and these create beat notes with the exact integer ratios produced by electronic equipment (and speakers). Too much harmonic distortion will make a piano sound out of tune.

Post removed 
kijanki's avatar
kijanki OP
4,428 posts
 
When amp sounds bright or warm it means that it is adding own harmonics to the music.  Slightly warm amp might be nice to shield against bright sounding records, but many people made a quest of finding the warmest sounding gear, warmth being treated as a virtue - the more the better.  I prefer an amp that doesn't have character of its own.
dpac996's avatar
dpac996
714 posts
 
Kijanki, 
Agree 100%. When you find the right system synergy, you know it. 
Let us know what your thoughts are after you spend some time with the AHB2!
mapman's avatar
mapman
22,299 posts
 
For background where I am coming from, the BEl Canto C5i in my smaller two channel family room system is probably the most neutral, airy, and transparent amp I have owned. It uses more recent generation IcePower modules, 60/w ch. More of the same power is all I could ask for. I’ve used all flavor of speaker with it (OHM, Triangle, Dynaudio) and they all sound best ever at low to modest volume. Just lovely! Never warm, never hot, with imaging and soundstage to die for, though the unique tonal character of each speaker does still come out.  Teh sound with any of these dynamic speakers more resembles the fast airy sound of electrostats like ML or Quad than with any other amp I have used there.  

Of course it is an all digital integrated amp (with both line level and phono inputs to boot), so there is more new technology at play there than just newer Icepower.

Compared to BC ref1000m amps, which is one generation older, that I still use in my main bigger system, Dynaudios can sound a tad hot depending on setup, Triangles a bit cold and analytic, OHMs right on target (that system is designed around optimizing the sound with my large OHM 5 speakers). Pre-amp is Audio Research sp16 (tube).
More to discover