@rvpiano I bought the SR1a for my AB2 monos (great amps BTW). The SR1a designer in Serbia loved the AHB2 and used them to design the headphone. I was warned that the AHB2 would not work well with the SR1a by some people in the USA. However, I decided to go with the designers preference. The sound was not that good with the AHB2. The SR1a is a bright headphone and the AHB2's neutrality did not help. So some fatigue was evident.
However, I made it a mission this year to get the AHB2 to sound great. I did so with a few options. The final and best sound I had from the AHB2 + SR1a was with the following:
- Gustard X26 Pro DAC
- CODA 07x preamp (thinking of selling now)
- AHB2 mono
- AccurateSound.ca CONVOLUTION FILE running on ROON Core. This filter was created by Mitch Barnett specifically for the SR1a.
Taking the RAAL-requisite SR1a Headphones To Another Level - Reviews - Audiophile Style
The most important factor for this magic was the Convolution filter. With the filter, the Benchmark DAC3B also worked as well as the Gustard. I did not try it with any other preamps, but warmish preamp would suffice.
I now use the KRELL K-300i integrated amp WITHOUT the Convolution filter. However, the KRELL is a very warm, smooth, and powerful amp and works great 'naked' with the SR1a. The AHB2 setup I had was close to being the best but it did not have as full bass (which the SR1a does not over emphasize) as the KRELL.
Send me a DM if you want to discuss this further. The next CanJam event is going to be in NYC. The RAAL-Requisite booth in the linked photo will be in NYC.