ProtoDAC TDA1387 X8 project

[thomaschan]

Yes, the CAT SL1 seems to be very highly regarded. I had to look up the CAT SL1 preamp, and there is a diyA thread with apparently the correct schematic here. It's a mu follower. Where the 6DJ8 is used is more as a cathode follower, so I wouldn't think it contributes that much to the overall sound. Most of the sound being from the 12AX7 (and 12AU7), but I need to read the Morgan Jones circuit analysis.

I had built the SL1 before with modified tube power supply for the B+. Very musical with punchy bass. Original design is solid state power supply which I haven't tried yet. Maybe one day I will. There is PCB available on Taobao for both versions.

https://www.youtube.com/watch?v=SVlRRSrfzM4&t=75s