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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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Jupiter Bees Wax and Paper Capacitors - OPA2134 Opamp Preamplifier

When you get bored with high voltage valve amplifiers you start to look to other things to get your audio gear junky fix. I have always like the weird combos of materials in coupling/audio caps. I started with Jupiter Bees Wax and Paper caps and built a preamplifier around them. They are the dynamite sticks you can see. These are hand made and have silver connecting wire. Pure silver wire was used throughout and silver solder. Alps blue velvet attenuator and gold plated RCA add to a rich mix of components. The active bit is the Burr-Brown OPA2134 in milled sockets. Two sets of inputs are switchable and each channel has its own virtual power. This unit runs from a 26V 3.5A computer power pack. A timber suspended, tar and heavy Al foil dampened floor provides the base for the cct. brds. which sit on standoffs and are rubber grommet dampened. The lid and base of the thick die-cast aluminum case are also tar and foil lined.

K-12G-Tube-Amp-Rear.jpg KT88-Single-Ended-Tube-Amp.jpg Underneath.JPG DIY-5687-Tube-Preamp-Rear.jpg SV101481.JPG
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Filename:Underneath.JPG
Album name:Chipamp, Gainclone, T-Amp and Op-amp Projects
Filesize:412 KiB
Date added:Aug 06, 2008
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