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RE: Schematics (1 of 2)

Posted by Koonw on June 14, 2008 at 02:54:11:
Do you have different or same value of plate and cathode resistor in phase splitter (can't read clearly in your schematic)? Because it can make a lot differences as this elimatated a lot extra global NFB that degraded the sonic, especially the upper treble and also speed. As your driver is quite simialar to old rca otl amp. http://www.miduho.com/jp/st/amp-kairo/rca/OTL%20Amplifier/rcaotl.gif it has 56K and 33K in phase splitter. Near very other otl amps use Gobal NFB in one way or another or NFB in the driver stage though, can you test is it better?