Diamond J-Drive - User Manual

Thanks for purchasing a Diamond J-Drive!
We hope you have as much fun playing guitar through this pedal as we did designing
and testing it. Our goal is to provide new twists on classic drive tone, and to make it
just plain fun to play. The J-Drive is a cool pedal - independently switchable clean boost
and overdrive functionality that lets you use the clean boost section as a lead gain stage
when the pedal is in overdrive.
Remember to protect your hearing and wear appropriate hearing protection when play-
ing loud...
Design Features
True bypass signal path
Dual function clean boost / lead boost as a separately switchable gain section
3-transistor discrete clean boost stage with high impedance JFET input, BJT gain and
class A output stage
Premium audio components, including 2% polypropylene capacitors and 1% metal film
resistors.
Warmth control - replaces the traditional fixed frequency cut/boost circuit with a variable
high-frequency cutoff filter coupled with variable low-frequency gain.
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Summary

Diamond J-Drive Design Features

True Bypass Signal Path

Describes the true bypass signal path for the audio signal.

Dual Function Clean Boost and Lead Gain

Features independently switchable clean boost and overdrive for lead gain stages.

3-Transistor Clean Boost Stage

Utilizes a discrete clean boost stage with JFET input, BJT gain, and Class A output.

Premium Audio Components

Incorporates premium audio components such as polypropylene capacitors and metal film resistors.

Warmth Control Functionality

Warmth control offers variable hi-frequency cutoff filter with variable low-frequency gain.

Diamond J-Drive Controls and Switches

Drive Control

Adjusts the basic overdrive level, from mild to distortion.

Warmth Control

Acts as a low-pass filter with gain boost for tone shaping.

Volume Control

Sets the overall output volume for the drive section.

Gain Control (Clean Boost)

Adjusts clean boost gain; acts as lead gain when combined with drive.

Drive Switch

Engages or disengages the overdrive section, indicated by an orange LED.

Boost Switch

Engages or disengages the clean boost section, indicated by a green LED.

Compression Switch Settings

Offers two settings for compression and sustain: traditional or raw sound.

Diamond J-Drive Powering and Warranty

Changing the Battery

Procedure for replacing the 9V battery inside the pedal.

Using a 9 V DC Adapter

Details on using a standard 9V DC negative pin adapter for operation.

Product Warranty Information

Diamond Pedals offer a five-year warranty on registered products.

Diamond J-Drive Specifications

General

Brand	Diamond
Model	J-Drive
Category	Music Pedal
Language	English