DOD FX20B is a stereo phaser effect pedal. It's a pedal of the late 1980s - early 1980.

Level connections:
1 input and 2 outputs;
It runs on 9v battery or AC power via adapter.


UTILIZATION

Configuration is very simple. One industry source on the input and the amp or the release or (depending what you want stereo or not).

The control of this effect is via potentiometer 3:
Speed: control the speed / rate of the LFO wave
Depth: control of the amplitude of the modeling
Regen. : Control the input level in effect

SOUND QUALITY

I use it with a guitar JACKSON (single coil pickup) EPIPHONE LUCILLE (humbucker) on a Fender Blues Junior Texas Red. Or an acoustic electric Takamine.

Used with a clear sound with:
(-) (') (')
Regen speed Depth
This gives a pleasant effect on the sound, a little dreamer

For a more spatial sound is little use the following setting:
(-) (-) (`)
Regen speed Depth

The effect seems to me to correct.

OVERALL OPINION

I have been at least 5 years. I have not tried other pedals of this type.
But I already used emulations Phaser on computer music.
The value for money is good.
It is very solid. The foot control is very good.