PSU-PRE - Power Supply Kit for Tube Preamp

$98.00

Availability:
In Stock
Product Code:
PSU-PRE

Description

PSU-PRE can support up to six 12A_7 tubes - enough for a 3-channel preamp with effects loop, consisting of our two preamps LP-PRE and Z-PRE, our LINE output buffer and a BFX loop.

PSU-PRE uses a pair of standard Hammond 229-series transformers to create the heater and plate supplies. Both are DC and well filtered. The plate supply has three nodes that can be individually tapped with paired wiring, for use with preamps other than ours. The heater supply can be wired for either 6V or 12V, the latter being preferred for use with our line of preamp kits. The heater supply also supports the switching circuits.

Total output power:
6V-2A; enough current for 3 to 6 octal preamp tubes
or 12V-1A; enough current for 6x 12A_7
320V-37mA

World mains compatibility is as simple as moving two jumpers OR by adding a "115V/230V" switch. Wiring for this switch is accommodated by the PCB for players who travel the world.

PSU-PRE includes flameproof resistors, electrolytic caps, fuses and holders, an IEC connector, mains switch and the transformers. Also includes helpful installation notes with schematic and layout diagrams of the kit.

For the ultimate in low noise, add our QS-LV Quiet Supply active hum filter.

For more info on London Power Preamp Kits, see our Preamp Kits page.

Need a chassis for your preamp project? See our Rack-Mount Chassis page, or browse under Building Supplies.

PCB size: 5.1" x 4.1" (130mm x 104mm)

About London Power

London Power was founded in 1990 by Kevin O'Connor, after two decades of research into innovative audio amplification techniques. Kevin is an audio designer, author and speaker, known for his proprietary methodology called Power Scaling, and for his eleven books on audio subjects. Whether you seek amps, kits or information, you'll find useful answers here on not just the "how" but the "why" of audio amplifier design. Please enjoy the information on this site, and don't hesitate to contact us with questions.

Contact Us

(807) 473-0952
11 am - 6 pm, M-F
amps@londonpower.com
PO Box 10012, Thunder Bay, ON P7B 6T6 CANADA