The Mini Quad Stereo Mute (MQSM) is an 8HP vactrol based mute module. The MQSM features 4 stereo signal paths, with two vactrols per channel (8 vactrols in total). The MQSM is perfect for muting all signal types found within a Eurorack System.
 
The MQSM can be directly controlled via its 4 buttons (one for each channel). All four buttons allow for both latching and momentary functionality. If a button is short pressed its respective channel will latch between a muted or unmuted state. When a button is long pressed, the channel's momentary mode is activated, lasting until the button is released. This is fantastic for using the MQSM during live performances. Through the use of a DIP switch on the rear of the module, you can choose how each state is displayed via the LED buttons, rather than it being prescribed to you. By default when a channel is unmuted its respective LED will be illuminated, and off when the channel is muted. Through changing the position of the DIP switch, an illuminated LED will indicate a channel being muted, and an LED that is off indicates a channel being unmuted. 
 
The MQSM also features the ability to detect the difference between both Gate and Trigger signals, and change its functionality based on the signal that is sent to the module via its 4 “G/T” inputs. If the MQSM detects a Trigger signal on one of its “G/T” inputs, the respective channel will latch between either a muted or unmuted state. If a Gate is detected the respective channel will momentarily latch to an unmuted state until the Gate ends. This functionality mirrors that of the 4 integrated LED buttons, allowing you to mute signals the way you want to. This also allows you to sequence each channel.  
 
The MQSM can either be orientated with the buttons at the top of the module or at the bottom, thanks to its modular design. The I/O used can also be chosen through the use of this modular design. Allowing users to choose how they use the MQSM is a core feature of the MQSM, as we believe that usability and accessibility are both extremely important for module design and users alike. Four I/O board and front panel combinations are included, allowing you use the MQSM exactly how you want to straight out of the box. Two of these I/O boards feature dual TS inputs, while the other two I/O boards feature TRS inputs. On both I/O boards featuring dual TS inputs, each of the left inputs are cascaded into their respective right inputs. A handy feature allowing the MQSM to be used as a ‘Mono-to-Stereo’ converter. When a cable is not patched into one of the left inputs, the MQSM generates a 10V (10 Volt) signal. This means up to 8 10V signals can be outputted simultaneously. This functionality is not available on either TRS I/O boards. 
 
 All Fully Wired Electronics modules come with Aluminum front panels and Knurlies for mounting.
 
3U
8HP 
4 independent vactrol based mute circuits (features 2 vactrol per channel, 8 in total)
Can be controlled manually the 4 channel buttons or externally via Gate and Trigger signals 
Each button can be used in latching or momentary mode
Changes how channels are muted depending on if Gate or Trigger signals are detected (momentary or latching)
Allows you to change how the channel states are displayed via DIP switch on rear of module
Capable of outputting up to 8 10V when using the included Dual TS I/O board and front panel combinations
Includes four I/O Board & Front Panel combinations, allowing for 4 module orientations without additional costs straight out of the box
Includes 2 Knurlies