Thanks for the info!!
The M-22 has 23.8dB of gain. Really? Vidar has 27dB of gain. That makes sense based on how little I have to move the volume knob to match sound levels between the two amps.
The interesting thing is that Vidar, even with the preamp off, outputs a noticeable hum in the speakers. The M-22 has zero hum when the preamp is off. I figured the gain was the issue. But the gain difference is not large enough. 3.2dB less would be quieter...but not enough quieter to eliminate the hum. I can only speculate that Vidar has an issue that the M-22 does not.
The M-22 has 23.8dB of gain. Really? Vidar has 27dB of gain. That makes sense based on how little I have to move the volume knob to match sound levels between the two amps.
The interesting thing is that Vidar, even with the preamp off, outputs a noticeable hum in the speakers. The M-22 has zero hum when the preamp is off. I figured the gain was the issue. But the gain difference is not large enough. 3.2dB less would be quieter...but not enough quieter to eliminate the hum. I can only speculate that Vidar has an issue that the M-22 does not.