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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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Prada OPA627 Preamplifier - inside

I was inspired to build this preamp by learning of the Burr-Brown OPA627 (very high performance OP amp) and access to my daughter's Prada phone, heavy cardboard, container. The preamplifier modules are constructed on vero proto boards. Only component wire was used here. The input caps are Cornell Dubilier (white) and Solen (black) was used for the output). Metal film resistors, all pure silver hookup wire, gold RCAs jack and WBT silver solder make this a quality build. The box is lined with bitumanised aluminum foil and an Alps Blue Velvet attenuator and 4oz solid brass black knob add to this build. Four 9V lithium batteries (1200Ah each) drive the unit.

Velleman-DIY-Audio-Kits.jpg IMG_3232.JPG PradaInsideBack.jpg Pass_Aleph_4_DIY_Amp_Project.jpg P37aFinishedS.jpg
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Filename:PradaInsideBack.jpg
Album name:Chipamp, Gainclone, T-Amp and Op-amp Projects
Filesize:493 KiB
Date added:May 22, 2009
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