Run your V1 and V2 preamp tubes on regulated DC voltage. Our DC Filament Regulated Power Supply kit allows you to easily convert your amp, or install in new builds, for much quieter preamp gain stages in mid-to-high gain amps.
In addition, this kit can alternately be used to power relays, or other low voltage devices that require voltage regulation. It also includes pads to install a current-limit resistor to power an (indicator) LED.
Includes Assembled PCB, (2) plastic mounting standoffs, 7806 1.5A Voltage Regulator IC, terminal strip, mounting hardware, and wire.
Beginning in 2018, instructions for modification kits are now online for your convenience. This allows us keep our prices competitive, and helps all of us reduce paper waste. Links to PDF files will be included in the order status email when the order ships, and always available in your order history. Please add grangeramp.com to your email whitelist to ensure you receive our emails. Due to time constraints, calls regarding “missing” instructions will not be returned.
DISCLAIMER: Please review your amp and/or schematic to determine if this mod kit can be installed before ordering. User assumes all risks. Performing these modifications WILL void the warranty on your amplifier. Working on amps can be deadly if you do not take proper precautions. Follow the instructions very carefully. Basic soldering skills 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.]