Positive Feedback Magazine

An Oregon Triode Society publication who now have a huge web presence. These issues are pro-valve magazines, packed with serious equipment reviews, tweeks, designs and discussions on theories.

KEY TOPICS, The GAIN System, The Black Hole amp, Tube Fest, Sonic Frontiers DAC-1

KEY TOPICS, CES 1995, 6C33C revisited, DIY DAC, The Mach I acoustic reference

KEY TOPICS, The higher End, 6C33CB amp, DIy phono amp, The disadvantages of SE design

KEY TOPICS, Tube Testing, How to review the reviewer, Tube substitution for the 90s, Designers notes

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