kasperbergholt Messages: 47 Registered: August 2021 Location: Copenhagen, Denmark
Baron
One more thing, in addition to less noise in the Telefunken, I detect a small difference between sound level between the right and left channels in the ECC80, and a small difference in the colouration of the background noise - right being a bit 'darker' sounding, the right side being a bit lower in volume that the left side.
I can adjust for this on the preamplifier, but would have expected very similar volume levels.
Can such a difference be understood by some measurement metric that's stated by some sellers of tubes?