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Forum Home > Layout Gallery - GuitarPCB Build Documents, Mods and Tips > Silent Tuner & Buffer

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Quality Moddable Buffer, Silent Tuning jack & remove the tuner from your signal path. Bass Guitar Ready!

Although this circuit was primarily designed for on stage use Silent Tuning - it allows you to cut the signal to the amplifier while tuning your guitar. It removes the tuner completely from the signal path so there is no worry about whether your tuner is true bypass or not or whether your tuner sucks the tone out of your sound.

It puts the tuner at the front of the signal chain where it belongs, the tuner sees a low (guitar) level signal free from the influences of any effects pedal when the tuner is connected further along the effects pedal chain.

The circuit buffers (high input impedance, low output impedance) your guitar making it suitable to drive vintage (low impedance input) effects plus it increases performance when using long cables with your effects in bypass mode.

The circuit provides an output of +6dB (gain of 2) although it can be configured as a unity gain (no boost) buffer or the gain can be increased by changing a single resistor.  With a few modifications the circuit can be configured as a foot switchable booster and / or variable gain circuit.

Silent Tuninig and Buffer Circuit Build Document

Buffer and Pedal Placent PDF Guide

Board dimensions are approximately 1.80 x 1.47"


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April 4, 2015 at 7:21 PM Flag Quote & Reply

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