I use a MC Sumiko Blackbird through the MM phono section. The Blackbird is 2.5 mV, and the Shindo dealer says the minimum MM should be 3 mV.OK, now we are getting somewhere. You probably have a noisy tube or tubes that is exacerbated by being below the minimum recommended input voltage, therefore needing to crank up the gain. Its also possible that you may have a loading mismatch by going into an MM phono stage (typically 47k ohms), but I'm not sure what that would sound like. See if you can get some phono grade/v, low noise tubes from a reputable dealer and report back.
Background noise
Hello folks. I have a Shindo Monbrison, a wonderful preamplifier, with a wonderful phono section. That said, I noticed a fairly high level of background noise when I turn up the volume without playing music (and this doesn't change by unplugging the interconnects). When the volume control is at its maximum level, you even listen to a little whistle.
Is it normal for a tube preamp or do you think there is a tube problem or another issue? I never experienced this problem in the past, but I've always used SS phono sections.
thanks.
Is it normal for a tube preamp or do you think there is a tube problem or another issue? I never experienced this problem in the past, but I've always used SS phono sections.
thanks.