Hello, Peter - I bought and installed the OPA627s over a week ago (there were good things being said in Europe about the combo of these with the Siemens 7308s). You're right about being relatively cheap. My first impressions after about 100 hrs. op-amp break-in were that high-frequency notes were reproduced more accurately (more real); if I had to use audiophile terms I'd say that the decay of notes was better depicted. I don't think I'll place the old ones back in, so long-term thoughts might be a bit more difficult to gauge.
I really haven't tried tube rolling, as I'm pretty content with the Siemens. Let us know what your experiences are.
Happy listening,
Arooj
I really haven't tried tube rolling, as I'm pretty content with the Siemens. Let us know what your experiences are.
Happy listening,
Arooj