Check the listing for details. Universal Preamp Power Supply - Bare PCB - Tube Amplifier. Condition: New. Listed at 19.99 USD. This is not a kit and you must purchase all of the components separately. A representative parts list is included. This offering is for the bare PCB only and additional components are required. We include a parts list, schematic and component layout. The universal preamp power supply PCB is for the AWA Universal Classic Moving Magnet Phono Preamplifier PCB or similar applications. Four voltage regulators for heaters and B+. Transformers on PCB: 12VA or 24VA size. B+ #1: 200-300V variable @ 5 mA, has a second output with additional filter for low level stage B+ #2: 200-300V @ 5 mA or 20 mA (up to 70 mA with a larger transformer) Dual 12.6VDC heater supplies (one can be biased positive to keep within H-K limits with a cathode follower, cascode, etc.). 0.3A each (0.6A with larger transformer), 6.3VDC or adjustable supply is optional. PCB is 6.5” x 6.5”, includes a typical parts list and schematic. This listing is for the bare PCB only, no other parts included. This is a project for advanced builders who are familiar with the hazards of AC line voltage and high voltage DC. Additional information is available at the Antique Wireless Association website. The completed unit and associated components produce potentially dangerous voltages. Unfortunately our pricing structure does not allow us to offer discounts on multiple purchases or to combine shipping on this item. International shipping is okay, but the postage will vary by location. Also postal regulations require this item to be shipped as a “package” and not an “envelope.” AWA SSS# 350