Quote:
Originally Posted by vintage_tube
V-1 is called a splitter/inverter. It takes the L & R single ended inputs and first splits each of them into two and then takes one of each pair and reverses the polarity. The result is you end up with Left & Right balanced signals that look like they came out of an XLR.
So, using balanced cabling bypasses V1.
V2 & V5 (also 12AX7's) take the balanced Left & Right signals from V1 & multiply or amplify the voltage several times. These are the most important tubes in a MC275.
Best Sir,
Bob
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Great response Bob - can't say I knew this...