Variable Power Control - VPC1 Kit


Our Variable Power Control is a quick and easy way to install variable output power reduction in your amp. Our VPC Kit easily installs in cathode biased amplifiers that are rated up to 40 watts. There are only 3 connections to make in the amp - B+ in, B+ out, and Ground. The active device is a 900V MOSFET that is mounted to the chassis by one screw, washer, and nut.

VPC allows the user to infinitely vary the B+ voltage, thereby reducing the power output. In this manner one can crank up the amp for great overdriven tones, yet effectively control the output and overall volume.

The board is 1.25" x 1.25" with the control pot mounted at the front, so it's very easy to fit, by either using an existing chassis hole, or drilling a new one. Instructions, a mica insulating pad, silicone heat compound, and the MOSFET mounting kit are included.

DISCLAIMER: User assumes all risks. Performing these modifications will most likely void the warranty on your amplifier. Working on amps can be deadly if you do not take proper precautions. Read and follow the diagram or instructions very carefully. Basic soldering skills and basic user-supplied tools are required. If you are at all unsure of your ability to perform these modifications STOP and take your amp to a professional to be modified. You can also send your amp to us for modification. Contact us for pricing.

DIFFICULTY LEVEL: INTERMEDIATE [Follow safety guidelines for working with electricity. Basic soldering skills and knowledge of working with AC/DC circuits. Identify all terminals of electronic components using data sheets. Read resistor color codes and capacitor values. Measure and connect high and low voltage AC and DC. Understand basic working of vacuum tubes. Use all functions of a multimeter. Understand Ohms law and apply to basic circuits. Work with basic hand and power tools.]

Add to Cart:

  • Model: VPC1-KIT
  • Shipping Weight: 0.25lbs
  • 11 Units in Stock
  • Manufactured by: Granger

This product was added to our catalog on Friday 11 April, 2014.

Official PayPal Seal

Your IP Address is:
Copyright © 2017 Granger Amplification Custom Shop.

Ads help offset our web hosting expenses. Every click helps up keep our pricing fair and competitive. Thank you.