Tube pre for class d recommendations


Would anyone care to share their experience running a tube preamp in front of some Class d amps?
owentdc
@atmasphere,
Hi Ralph.  I had the UV-1 on loan after it first came out from Alternative Audio in Dundas, Ontario.  It fed the power amp of my W4S STI-1000.  We couldn’t track down the buzz and I took it back. Too bad, it did give a slight tube sound that I was looking for.

@ghosthouse,
The Freya looks interesting.  Thanks!
The past 7 years have been very satisfying with the MacBook Pro >>JRiver >>Stello>>Moon 300D>>Harbeth SHL5.  I’ve just got an itch again about mating a tube pre with the Class d.
@owentdc

Hi Ralph. I had the UV-1 on loan after it first came out from Alternative Audio in Dundas, Ontario. It fed the power amp of my W4S STI-1000. We couldn’t track down the buzz and I took it back. Too bad, it did give a slight tube sound that I was looking for.

We’ve found that the UV-1 can be sensitive to power cords. We had a customer recently that ran into this. While all the data isn’t in, he found that by simply moving the cord around, the preamp got quiet.




Interesting Ralph.
I have 2 foundation research LC2...one grounded and the other lifted ...done by Ed....that I used. Meaning, I was really giving it the old college try to make it work.