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Review and Measurements of Benchmark AHB2 Amp
- Thread starter amirm
- Start date
Sound cleaner , more detailed , and fuller rounding sound … at first it felt almost like it was under powered and not very loud … I was using a Audioquest power cable and maybe it wasn’t plugged in correctly cause the stock power chord lifted the sound … sorry it’s hard for me to put on paper what I’m thinking and what I hear …
Thinking, certainly. Hearing... unlikely. Highly unlikely. Overwhelmingly unlikely.
Not very likely... More like impossible to make a difference with either the stock power cable or the Audioquest.
You have the opportunity here to cast away a lot of nonsense that people have put in your head. Likewise, you also have a chance to better understand the sort of games your brain plays with you.
The door to knowledge is open. It's your choice whether or not to walk through it.
Get a life fool?
If you change your mind and decide to stick around, maybe dial that back a little.
There is a lot to be misled by out there. Rather than buy into this stuff without question, we try to get to where the evidence lay, or lies as the case may be.
Don't take it all personally...it's certainly not meant that way.
I always think back to how much more I knew than my parents when I was 15, and how much more they knew than me when I was 25... Amazing how much smarter they got in that time. 
The AHB2 will faithfully reproduce the output of the tun preamp. It could be considered a step in the right-direction.
- Rich
I’m stuck !!! I upgraded to the AHB2 from a Peachtree Nova 300 I was running in power amp mode … I was expecting a upgrade but I feel like my soundstage isn’t as wide and the details not as good … while listening to Bill Evans live at the Vanguard I could hear the drummer hitting a snare also can hear the people talking in the background while using the Nova … same album same song and I can no longer hear those things thru the AHB2 … everything was the same in my setup except the amps … I have now upgraded all my tubes in my preamp and got RCA to XLR chords straight from Benchmark and still no effect … maybe the unbalanced connection makes that big of a difference? I need help ? Prolly only have about 50 hrs on AHB2 … but have spent close to $800 trying to reproduce the details and soundstage the Nova gave me …
Having looked at the specs, https://www.peachtreeaudio.com/products/nova300, it looks like you should be using the higher gain (upmost position) on the AHB2s. If you are already doing that, then it may be that the prior amps colored the sound.
You could also contact Benchmark, they are very responsive.
- Rich
Prima Luna Evo 100
The AHB2 high-gain mode is 23 dB. Many amps have a 28/29 dB gain.
Try turning the preamp up (high gain mode) by 5 to 6 dB to estimate a gain match and see what you think.
- Rich
My Prima Luna Evo 100 has a gain of only 10.8 db and I can’t change it .. I will try to change my gain in my Chord Qutest DAC …
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