1976 Systech 4000A Voltage Controlled Flanger Guitar Rack Effects. This flanger is in great overall working condition and sounds great. It has a very subtle and clean effect without overpowering your tone. Everything has been fully tested. All potentiometers date to 1976. The previous owner removed disconnected the two rear remote control jacks for rate and delay to prevent accidental damage due to requiring a special foot controller, but this can be easily reversed if desired. The rate and delay controls are still controllable on the front. The on/off remote footswitch jack still functions. The gain properly cuts out volume if overloaded too high. The exterior of the case has some typical scuffing expected from an old rack unit. Does not include any accessories.
“Hard to find voltage controlled rack-type flanger from Systech.”
The Model 4000A has the following:
- Three-band equalization on the input;
- Adjustable input gain with an overload LED indicator;
- Emphasis control for flanger regeneration;
- Flange rate control with rate LED indicator;
- Dry/wet mix control;
- Manual delay control;
- In/out push-switch (effects bypass);
- and power on/off switch and indicator.
“Standard 1/4-inch input and output jacks. Remote control foot switch/pedal jacks for IN/OUT effects bypass switching, MANUAL DELAY sweep, and FLANGE RATE pedal or Control Voltage control. AC-powered, rack-type mounting in a 2U space unit.”