Cube Audio Nenuphar Single Driver Speaker (10 inch) TQWT Enclosure

It would be interesting to try the sit3 in a dual mono configuration for a more fair comparison to the sit1. All you need is a second chassis, power supply, and then you just move one channel over. Anyone over on the pass labs forum of diyaudio could do it. As I've mentioned earlier in the thread, I found independent power supplies for each channel to be a very substantial upgrade when I did it for my first watt f4s. I think I've said this before too, but it's a really beautiful amp that doesn't get the attention it serves, btw.

Thanks @riaa and @rwpollock Looks like you guys are lucked out getting a pair of SIT-1. All the SITs are unobtonium these days. I will keep my eyes and ears wide open in the used market but if anybody is willing to offload any of the SITs, pm me please :-)
btw, I currently have a PS Audio BHK Pre - can anybody tell if it’s a good match with the SITs ?

@david_ten thanks for the confirmation. You happen to also use a Townsend podium - did it make a bigger difference then just using the Eden spikes on the bare floor ?

@cal3713 interesting thought. There is no question that a separate power supply on each channel can make a substantial difference depending on the original power supply design. I haven’t seen the inside of SIT-3 but if there is enough space inside, you could install the 2nd one in the same chassis and rewire into a dual mono configuration. You would then have to recalculate the fuse rating (if it has one) and drill another hole for the 2nd fuse. It’s another option for someone wanting a stereo amp and saving real estate :-)

If one had two SIT-3s could you turn them both on and run the right channel from your preamp to one and the left channel through the other amp? One amp would then drive the right speaker and one the left.

@rwpollock Definitely.  The idling board of the unused channel does (in my experience) still create a little extra distortion though, so if I settled on that solution, I'd eventually disconnect that board from the power supply. If a friend had a unit, your method would be the easiest way to see what the benefit would be.