Background

To see if the Burson V6 operational amplifiers are viable in the Muffsy Phono Preamp, I went ahead and bought the dual version of both the V6 Classic and V6 Vivid (*). They don't come cheap, about 20x the price of an OPA2134. Getting two of these instead of 40 OPAs for my kit stock was qui...

The previous blog post showed some noise measurements using a USB sound card. I just received a QuantAsylum QA400 audio analyzer (link), and got to do some real measurements.

The full Muffsy Phono Preamp specifications are as follows (using the Muffsy PSU, OPA2134 and the components that ship with th...