btw I make my own diy DC cables of silver or silver clad wire isolated with cotton soaked in oil. It works well with the LPS-1 and the Singxer SU-1.

I use either an Uptone LPS-1.2 or LPS-1. They are quite expensive but I think they are worth it. If you’re lucky you can get your hands on a cheaper second hand LPS-1. It has a standard DC out jack and you can use a European power cord for the 230V. Since you’re in Germany they have a nice Allo...

Does anybody know the voltage rate of the oscillators/clocks? I’m considering exchanging these as I have a pair of spare NDK 3.3V already.

Thanks, but no that didn't help. Like I said: 'I power cycled both the SU-1 and the SBT some 3 or 4 times..... to no effect.' It wasn't until I connected the SU-1 to my laptop that the blue 'play' LED came on. The Windows PC somehow sent a USB handshake that got the Singxer going.

I've had the SU-1 for about 1½ year as a USB->AES interface between my Squeezebox Touch player (w. EDO) and my totaldac. It's been running quite smoothly. Then I swapped the internal psu for an LPS-1.2 with very good results in SQ. Then suddenly a couple of weeks ago the SU-1 wasn't playing...

I'm sorry I can't quite comment on that as I have another version of the pcb - the mkIV. But as I said, try to email LD support they're usually responding.

I don't get this. Now, why would you want to isolate a signal that is already isolated in the first place in the soekris r2r-dac? Like, you don't have to turn off the lights twice. It doesn't get any darker doing that. Btw. Paul has his own filter site called moredamfilters. Hasn't been...

yes, quite a price jump. But the sheer production doesn't come cheap either since it's a true discrete resistor ladder design. Those Vishay Foil Resistors are at least $15 a piece. 200 resistors per stereo channel, you can do the math. Totaldac prices are here Delta-Sigma dacs just doesn't...

I have my beloved Pagoda up for sale because I just purchased an r2r totaldac d1 dual. http://www.head-fi.org/t/803285/mhdt-labs-pagoda-nos-r2r-dac

Sorry if this has been described before, but how does the Yggy handle the delicate fading notes of a solo piano and low level information in general? Any sign of distortion or quantization artifacts?

Interesting. Effortless was the exact same phrase that instantly came to mind when I experienced two different discrete r2r-ladder dacs, the TotalDac and the Discreet Monica. Those two dacs made every other sigma-delta dac sound like they are struggling. I even owned the Discreet Monica for...

Did you ever make that DAC shootout? I'm curious of what you and your buddies think.

I think that's a minor understatement.

Hey wow lemonjelly. Thanks for the very comprehensive post! SInce my posts in this thread I've moved on to a solid state Questyle amp, but if  one day I find the time I'd like to try the 6SN7 modification as I have some of these tubes already. Keep up the good work :)

Ever since I bought this amp in 2011 the volume potmeter has been very noisy. Any precise ideas of an alternative potmeter? (It's got 6 pins as I recall).