2. amps-preamps
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Output Impadence for Musical Design SP-2B

I want to know if anyone can tell me the output impadence for the Musical Design SP-2B linestage. I recently purchased this tube preamp used and would like to know the output impadence so that I can have an idea as to which power amps it can work with. I have e-mailed Musical Design but they haven't gotten back to me so I figured I'll throw this question up in the air for someone to help me out with. Thanks
speedracerucr

Showing 1 response by brokenarrow

brokenarrow
3 posts
 
If my (long-term) memory is correct, I think that Musical Concepts/Design was using the 6922 in an SRPP configuration (which would make sense since they advertise the SP-2B as "single-stage no feedback" circuit). Now IF that is still the case, then the output impedance of that circuit is 1/2 of the tube's rp. The rp of a 6922 is around 4-5000 ohms (correct ??), so your answer is 2K to 2.5K. But ***please*** confirm this with Mr. Hillig.
(If my facts & figures are incorrect, anyone feel free to correct me!)
Enjoy your new linestage!
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