For most power amps 2v input is close-to-peak voltage. Anything higher than that has to be attenuated. Very often there is no need for active preamp for that reason. Just make sure that you have input impedance of the poweramp ~10x output impedance of passive preamp and output resistance of the passive amp should not be less than 5k. Another words look on the specs of the passive preamp along with its resistor and potentiometer values.
High output dacs/CD players
I'm interested to know high output dac and/or CD players which can go well with passive preamps. The high output is generally well above the 2V norm of the CD. I know of the Theta Pro gen V dac which is about 6V in unbal RCA and about 7V in bal XLR. Then, there is the Audio Synthesis DAX-2 at 3.6V and also the Altis Ref dac with 4V. Are there more? They all must be highend products. Any CDPs?
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- 7 posts total
- 7 posts total