aion QUARK Посібник - Сторінка 2

Переглянути онлайн або завантажити pdf Посібник для Музична педаль aion QUARK. aion QUARK 10 сторінок. Vintage overdrive

1 Project Overview

2 Introduction & Usage

INTRODUCTION

The Quark Vintage Overdrive is a clone of the Maxon OD-880 Overdrive / Soft Distortion, originally

released in 1976.

This pedal was huge in Japan, being the favored overdrive pedal of Char, one of the country's most

popular guitarists, who-like the pedal-never really got noticed out of Japan. It was reissued a few

times, notably in the mid-90's as well as more recently.

It's an interesting circuit from a historical perspective, being sort of a "transitional species" between

the Distortion+ and the Boss OD-1 OverDrive. It added the input and output buffers and changed the

Drive potentiometer to a flat op-amp boost instead of a gain modifier that also affected the bass tone,

as in the Dist+. The Boss OD-1 is essentially an OD-880 with feedback clipping diodes instead of diode-

to-ground clipping. This diode arrangement turned out to be a very big deal and made way for the Tube

Screamer a couple of years later.

The Quark is a direct clone of the OD-880, but with a few additions. A clipping toggle allows switching

between three different sets of diodes. An EQ switch engages a second mode with increased gain and

more bass. And since the OD-880 lacks a tone control, a Treble switch selects between three different

post-clipping hi-cut modes.

The updated version of the Quark is the same as the original 1590B version, but with the addition of the

Treble switch which the original Quark did not have.

USAGE

The Quark has the following controls:

• Drive controls the amount of gain in the op-amp feedback diode clipping stage.

• Volume controls the overall output of the effect.

• Clip (toggle switch) selects between three sets of diodes: 1x silicon (stock), 2x silicon, and LEDs.

• EQ (toggle switch) selects between two different tones: stock mode (similar to the Tube Screamer)

and another mode with slightly higher gain and less bass cut.

• Treble (toggle switch) selects between three different treble-cut modes. Stock mode has the

highest treble cut.

QUARK VINTAGE OVERDRIVE

10 Licensing

TABLE OF CONTENTS