Battery Free TB-83

The Battery Free TB-83 by Pete Cornish is a treble boost pedal designed to enhance the tone and overdrive characteristics of low-gain amplifiers, particularly the "Normal Channel" in early Vox AC30s. Here are the technical specifications and features:

1. Design and Use Cases:
- Originally designed to be the interface between Burns Tri-Sonic pickups and the "Normal" input on vintage Vox AC30 amplifiers.
- Also performs well with other low-gain amps that have little or no built-in treble boost.
- Intended to improve the tone and overdrive characteristics by adding "Bite" and "Dirt" to low-gain amplifiers.

2. Construction:
- Each unit is independently hand-built, wired, and tested by Pete, Lynda, and Mingus Cornish.
- Modular design allows for replaceable parts if damaged.

3. Technical Information:
- Maximum output: +10dBm
- Measured output noise with a 10KΩ source impedance: -82dBm, providing a signal-to-noise ratio of 92dB.
- Active circuitry is potted in semi-flexible resin for environmental protection and to eliminate microphonic feedback.
- Glass fibre PCBs are used to reduce resonant vibrations.

4. Housing and Dimensions:
- Housed in a rugged die-cast box with a Hi-Brite "Power ON" LED.
- Dimensions: 121 x 66 x 40 mm.

5. Power:
- Input for a DC adapter (coax connector size: 5.5/2.1mm, center pin negative (-VE)).
- Recommended adapter: Voodoo Lab Pedal Power 2 Plus, providing noise-free, fully stabilized 9V DC at 20mA.
- Use of other types of DC adapters may void the warranty and cause damage.

6. Warranty:
- Covered by a two-year warranty for manufacturing faults, excluding normal wear, misuse, unauthorized modifications, or accidental damage.
- Warranty void if guarantee labels are damaged or removed.

The TB-83 is a versatile pedal suitable for enhancing the performance of low- gain amplifiers and is built to high standards with a focus on durability and performance.