I started building a listening room about 18 months ago. I bought a NAD M12 pre/dac and NAD M22v2. With my Tannoy DC8Ti speakers, the highs were too bright, the mids were too loud, the bass was just right. I purchased a used Herron VTSP-3A tube pre amp and Audio Mirror Tubadour III SE DAC. The sound is much more musical, with no loss of detail.
Both the Herron pre amp and NAD power amp have gain controls. After much futzing with both, and moving the speakers and my listening position, I found the Heron on low gain and NAD on mid gain gives me the best sound, with my speakers about 2.5' from the side walls and 3' from the front wall with a slight toe-in.
The M22v2 is very nice sounding class D amp. The Herron/NAD combination is working for now.
Both the Herron pre amp and NAD power amp have gain controls. After much futzing with both, and moving the speakers and my listening position, I found the Heron on low gain and NAD on mid gain gives me the best sound, with my speakers about 2.5' from the side walls and 3' from the front wall with a slight toe-in.
The M22v2 is very nice sounding class D amp. The Herron/NAD combination is working for now.