I am happy to test phono pre-amps. Do you guys have some suggestions on units to test?
I bought a UMC202HD to use with guitars (that was my excuse). You tested the UMC204HD.
Then, since it had instrument/mic amps, tried using it as a phono preamp with a borrowed yamaha P-300 TT with and old (top of the line at the time) Grado cartridge.
Screechy!
Located a biquad to create the RIAA playback filter at the miniDSP.
And it seems to work just fine. I'll use it for the one LP I have that I want to digitize.
The only problem, we listened to an album, and John, who harbored some mild desire to hear some of his old LPs, looked at me and questioned whether there was any point in it. "What's the hoopla?", I think he said.
The 202 and an Ibanez GSR 205 are my Christmas Presents for this year.