Some new questions regarding fain og QSXM2:
1) The MC mode total gain is input stage + RIAA stage, which means with componets value as schemtic, it is 67dB?
2) What is the maximum gain I can (each +6dB step) reach for the input stage by changing R50/E50?
Since yesterday I have a A/B test with my friend's EAR 834P, which suppose to have 68dB gain at MC, but in his system, only swapping between 834P and QSXM2, QSXM2 with standard value of R50/E50(68R) and R93/E93(680R) as schemtic, it sound like just something at 5xdB gain only, we feel strange since even non matching impedance or else, if just 1dB gain difference, the sound level should not be so huge difference, we need to tune the volume knob from 10 o'clock (with 834P) to almost 2 o'clock with QSXM2).
Then I try to ask if he have something for replace R50/E50 since he also DIY, we found only 2 matched 330ohms so give it a trial, but heavily distored, I think we add too much gain which cause overload or unstable.
Therefore please advice the maximum value I can do for gain changing, to aviod mess up the machine, thanks.