Circuit - PMT, Variable Treble Bleed

Precision Music Technologies
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Circuit - PMT, Variable Treble Bleed

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Precision Music Technologies V-Treb – Variable Treble Bleed Bypass Circuit. Made in USA.

The V-Treb Variable Treble Bleed Circuit attaches to the bottom of any volume pot and corrects the problem of high frequency losses at reduced volumes by allowing the player to control how bright or warm the tone will get as the volume control is reduced. Turning the trim pot clockwise increases the amount of treble bypass for a brighter sound at reduced volumes. Turning the trim pot counter clockwise reduces the amount of treble bypass for a warmer tone at reduced volumes. With the volume at 10, the V-Treb is removed from the circuit and does not affect the sound.

Item ID:
Precision Music Technologies
Product Measurements by Type
Depth0.38 in.
Item Length1.06 in.
Item Width0.46 in.
Thickness0.06 in.
Packaging Information
Packaging Dimensions3.75 in. × 3 in. × 0.374 in.
Weight (Packaging)0.011 lbs.
PDF: InstructionsAll Models

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PDF: Instructions Instructions520.18 KB

Questions and Answers

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Asked by Anonymous on January 31st, 2020.
February 4th, 2020
Staff Member
This is a passive circuit, and it may be that you need to adjust the internal trim pot to taste.
July 23rd, 2021
I did try lowering it all the way down to see if it eliminated the mid boost I was getting and it was a little better but not much.
October 17th, 2022
Are you sure it is hooked up and adjusted correctly?
Asked by Anonymous on October 13th, 2020.
October 13th, 2020
Staff Member
Both the "Duncan" and the "Kinman" treble bleed circuits are simply a cap/resistor combination and can not be adjusted to taste like this unit.
February 19th, 2021
The Kinman style is with the resistor in series. I believe this is a parallel cap/resistor combination.
Asked by oregon4418 on July 13th, 2019.
July 15th, 2019
Staff Member
That is not the case. This simply retains the high frequencies when rolling down the volume knob. If you want a funcioting tone knob, an additional potentiometer as well as a capacitor will need to be included in the circuit.

Product Reviews

5.00 out of 5 based on 2 reviews
CRUNCHCOLE - October 17th, 2022
5 out of 5

My favorite treble bleed system. Once you adjust it the tone stays the same when you turn the volume down on the guitar. I hooked it up on two remote wires on my strat so I could adjust it while playing and got it just right then mounted it on the pot. Works great. This one is for my tele

michael.cluff - March 13th, 2022
5 out of 5

Simple, elegant solution to treble bleed that's easy to install. Adjustable pot lets you adjust the amount of correction. Fixed the almost unusable volume knob on my Danelectro!