"The Groovewatt Tube (Valve) RIAA Phono Preamp Project
A phono valve preamp using ECC83 (ECC83S, ECC803S, 12AX7) and EXX81 (12AT7) tubes designed by Bruce Heran of Oddwatt Audio. For more information and schematics see "DIY Vacuum Tube (Valve) RIAA Phono Preamp" the page on the diyAudioProjects.com.
The XPWR083A power transformer. It is a 120V, 60Hz. or 240V, 50/60Hz. line to 200V at 40mA and 8V at 1.5A.
All units are wound with the finest virgin copper magnet wire. All windings use heavy insulated wire to provide excellent manufacturing yield, lower customer cost and superior life.
EDCOR uses the finest M6 line grain oriented steel cores. Each unit is hand stacked to assure at least 92% stack.
EDCOR's standard bobbin with black finishing tape.
This unit is designed for printed circuit boards. For footprint and suggested hole and pad size please see the dimensional drawing 15000-EI075-087-P12.