Thanks for the replies guys I'm going to get the pre amp and then put it through its paces.
the only issue I had was matching a power amp with correct sensitivity. At the time I had an art power amp and I only had 2 clicks of volume control to play with
Well I hope I haven't overdone it as I'm using Tube Technology Genesis Monoblocks @ 100w per channel gulp
Well I hope I haven't overdone it as I'm using Tube Technology Genesis Monoblocks @ 100w per channel gulp
It’s about the input sensitivity of the power amps rather than their output. I saw that the genesis might be 0.75mv so quite sensitive. You might not have too many clicks on the volume control to play with and might need to think about some Rothwell attenuators?
Thanks for the reply, if I may ask which attenuator version should I get 10db or 20db.
I'm no good with electronics but love listening to music.
I believe they use the ECC88 without feedback but with the two triode sections in parallel... Mu of ECC88 is 33 so allowing for no current source at anode (just a load resistor) then indeed the gain is going to be in the area of 28-30 X. That's loadsa gain!
An attenuator of fairly high impedance should be used to avoid loading down the pre amp and causing excessive distortion. 20dB will reduce output by 10\X and should be fine but look for input impedance (actually resistance...) of 10K or more.
They use 6922s. Don't know if that changes the specs at all?