hifiguy55

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Mixed driver tube for Mcintosh MC275
Tzh21yYou can find schematic of MC275 re-issue in http://farm5.static.flickr.com/4037/4204605299_bdfa12827f_b.jpg. You can study from the schematic that V1 is not in the signal path. 
Mixed driver tube for Mcintosh MC275
The input stage of MC275 re-issue is completely different to old design. In balance input of re-issue, the positive and negative phase is push-pull amplified directly and coupled to output transformer to form a completed output waveform. This new ...