ooops.. general rule of thumb is 10 to 1...input impedance of power amp to preamp. Supposedly 30 to 1 is ideal...
someone correct me if I"m wrong.
Also some tube pre's can be a little bit noisier than SS. That is, if you put your ear to the speakers without anything playing, there is sometimes a hissing... doesn't bother me too much. I don't think it affects the sonics...
And it's cheap and easy to switch premap tubes (no biasing) to tailor the sound you want, as compared to power amp tubes (again someone correct me if I'm wrong). Much longer life too.
someone correct me if I"m wrong.
Also some tube pre's can be a little bit noisier than SS. That is, if you put your ear to the speakers without anything playing, there is sometimes a hissing... doesn't bother me too much. I don't think it affects the sonics...
And it's cheap and easy to switch premap tubes (no biasing) to tailor the sound you want, as compared to power amp tubes (again someone correct me if I'm wrong). Much longer life too.