I know there is another thread on the "Amp deal of the century" but I couldn't find it quickly. (Amp deal of the century was the Accurian amps sold at RS for as low as $15)
I substituted an Accurian for my Manley mono blocks just to see how it sounds. I had it powering a pair of inefficient DQ-10's with my fairly high end LP source/preamp setup feeding them. Overall the sound was a bit noisy. Also, there was a slight buzz and when I turned on a dimmer for my lights it buzzed even louder. The high frequencies were a bit rough too.
For the fun of it I disconnected the preamp board completely and ran the input directly to the main amp board. This totally eliminated any and all noises. It still has a fair amount of gain this way too. (I could still over power it with my standard preamp). All the harshness in the highs went away too.
This got me to thinking, can I make it sound even better? I was thinking maybe I could us batteries to make up the + and - rails to the transistors and supply whatever other supplies with DC as well. Does anyone have any other ideas like this? I was thinking maybe the transistors could be changed to something of better quality but I wouldn' t know what to pick. I'm open to suggestions here.