The TT2 is supposed to sound superior using RCA outputs is it not? The Belles amp has a single XLR output also, and can be used as a monoblock with that output, but obviously I would need another one. The amp my dealer has is brand new, but is about 5-6 years old now, he had it sitting at his store for that long, it just never sold. Because of its age, I can get it for 2K Canadian, which is half the price (in Canadian) of the Benchmark amp. I know a few people with. Belles amps, and they all love them. LilKe I said, I demo’d it, and I had no problem at low or high volume, and I see no reason that I need variable sensitivity.I find that on most forums, most people always promote the gear (amp) that they use, so with respect, I will trust my own ears, and every review I have read, and buy the 150 Av2,