Benchmark AHB2 - The Power Amplifier for your Headphone
"The Benchmark AHB2 is a power amp meant to power speakers. There seems to be an interest in it for hard to power headphone enthusiasts on the forum even though Benchmark makes the HPA4 which is a headphone amp. That said, folks trying to drive the Hifiman HE-6 and Susvara gravitates towards this piece of gear."
"Finally, I pulled the trigger on the AHB2 and couldn’t be happier."
"None of these have been provided to me. I bought everything pictured."
"As Golden Sound put it, it is the objectively best measuring power amp and it shows. The THD+N numbers are off the charts (technically reverse of that as in they are so low that they won’t show up in a plot; think obscene numbers of zeros before a digit shows up)."
"How do you connect headphones to the AHB2 (which is a speaker amp): This is likely the most asked question and one I struggled when I was starting out."
"For this you want a SpeakON to female XLR-4 cable."
"But wait, people say I need a resistor box/attenuator so that I don’t blow up my headphone: Naah! As long as you are driving hard to drive, low sensitivity headphones like the Susvara or HE-6, you really do not need a resistor box."
"Parting thoughts: To conclude, if you want to drive the Susvara or HE-6, I cannot recommend anything better. To add, I run the HD800s along with my trusty HE-560 v1 on it as well, and they sound glorious. Also, as a parting note, if you judge THX as the tech that dictates the sound signature of the 789 – think again. The AHB2 is not at all sterile as that amp. Also, Benchmark is an excellent company. They have a 30-days no-gimmick return policy, if I hadn’t liked it, I’d have returned it; but boy do I love it."
- adnan0819, The Headphones Community
