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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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DIY Dynaco ST-70 Tube Amp Rebuild

This ain't your father's Dynaco ST-70 amplifier. Mahogany case with toroidal power tranny.OPTs are original Dynaco 470s purchased via auction. Trannies "capped" with same wood. Features the tubes4hifi 12AU7 version of their driver board (and I woud never go back to the 12AT7 version now).
Re-issue GoldLion KT88s, Mullard 12AU7s. Fused with an IEC and on-off switch up front. Bias adjusting performed via Red Test Jacks perpendicular to holes cut for trimmers Ground/Common is Black test jack behind center driver tube. Tubes colored with LEDs.

Charlie Mooradian
USA

OddWatt-225-6SL7-KT77-PP-Tube-Amp.jpg Scott-299-Amplifier.jpg DIY-Dynaco-ST70-Tube-Amp.jpg S5-K16LS-Tube-Amp-Kit-Mahogany.jpg SE-807-Tube-Amp.jpg
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Album name:Vacuum Tube (Valve) Audio Projects
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Date added:May 05, 2012
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