I have a passive preamp already which is best when matched to a power amp with >50k impedance. What is the impedance of a gainclone and can it be raised to >50k if necessary?
Your advice would be much appreciated
Your advice would be much appreciated
Yes it can. But not very suitable in the 'inverted' mode which many prefer soundwise. In the standard non-inverting mode there are absolutely no problems. In the inverting mode a 50k input resistance means at least 1mohm fb resistor for a minimum gain of x20 and 1.5Mohm for a more conventional gain of x30. No idea how stable the offset will be. Of course there will be slightly more noise as well. You're in a bit of a 'catch 22' situation here.
cheers
peter
cheers
peter
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