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 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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6SN7 / 6L6 DIY Tube Amp

The valve lineup for each channel is a 6SN7 as first amplifier and phase splitter, followed by another 6SN7 driving a pair of 6L6s. Bias is set by active semiconductor current sinks. The 400V HT is generated by a double anode diode (5R4) driving a choke input filter. The audio output transformers are Hammond Manufacturing 1620s. With a conservative rating of 20W per channel, measured frequency response is 10Hz to 40KHz with minimal square wave overshoot. I'm very pleased with how this unit sounds and looks.

Schematic Drawing: Williamson 6SN7 - 6L6 (KT66) Tube Amplifier

Audio-Innovations-700-Integrated-Tube-Amp.jpg VTR-ST60-Tube-Amplifier.JPG 6SN7-6L6-Tube-Amp-1.jpg 6SN7-6L6-Tube-Amp-2.jpg 6SN7-6L6-Tube-Amp-3.jpg
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Album name:Vacuum Tube (Valve) Audio Projects
Filesize:108 KiB
Date added:Mar 12, 2008
Dimensions:1450 x 1087 pixels
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