I've had an AHB2 amp for around 6 months. It's a perfect fit with my ancient AR-LST speakers.
Owners of this amp may need to experiment with the sensitivity switch to get the best results.
The sound from my system with the ABH2 is very much dependent on the source material being played. Records which are not well engineered have nowhere to hide with this amp.
For me, the AHB2 is a good combination of relatively low cost and really good performance. No regrets whatsoever.