This used module is in great shape with no rack rash.
Ground Control is a compact utility module with many useful features. In addition to routinely used functions such as an attenuator, DC offset (DC Bias), an inverter and multiple, ground control's preset gain system exhibits precise voltage scaling at the flick of a switch. Seven gain settings provide a simple way to transform AC and DC signals into the most commonly used amplitude ranges. Any CV level can be precisely scaled and biased, greatly improving compatibility despite Eurorack's lack of control voltage standards.
Not only for control voltage bridging, line level audio can be amplified to modular levels and vice versa. Bipolar LED indicators provide a clear warning that nominal modular clipping thresholds have been reached.
All changes performed by the voltage processor are registered in real time via the built in OLED VU meter. The meter features analog emulation and floating point numerical meter modes. The VU meter direct input allows signals to be measured non-destructively and with precedence, even while a separate signal is being processed.
The simple design and stabilizer control ensure glitch free voltage metering.