One the volume control issue. I have a dac with (optional) analog volume control, and variable output voltage setting (MSB), and an upstream processor with digital volume control (trinnov). If I set the dac to -9db output voltage, my listening range for volume control is between -20db and -0db. In this range I hear absolutely no difference between attenuation using the trinnov digital or the MSB analog volume control. The trinnov digital VC would be the same as what is done in the $40k ADA reference. One could conclude this means the digital is better, because if I elected to use the digital VC, I could remove the optional analog VC from the MSB circuit which can only make things better. I have not done the same experiment with higher attenuation levels.
post #4801 of 6662
2/16/13 at 8:42am