Passive stereo controller and switch box. The M-Patch 2 is a compact desktop/rack-mountable sized passive volume attenuator and patch control device. M-Patch 2 is a feature packed passive problem solver for nearly all production environments. A great way to passively attenuate stereo signals from soundcards, CD players, pre-amps, and mixers, the M-Patch 2 front panel rotary controls allow precise level adjustments for two input sources. One of the benefits of passive volume attenuation is that you no longer have to control volumes with your software master volume fader. Reducing audio levels from software only reduces your bit depth. It is much more appropriate to keep your software masters at unity and passively attenuate the audio to your active monitors. No active circuitry, buffers, transistors, batteries, or power supply of any kind can interfere with the main passive output of the M-Patch 2. It simply delivers attenuated signal. Audio input connectors: 2 x XLR/6,3 mm jack combo connectors, 1 x stereo RCA pair (L and R), 1 x stereo 3,5mm jack. Audio output connectors: 2 x XLR output pairs (A-/L and R, B-/L and R). Headphone output connectors: 1 x 6,3 mm stereo jack output. Headphone output frequency response: 20Hz - 20Hz +/- 0,5dB. Headphone output maximum output level: 320 mW into 32 Ohm. Power supply: DC12-16V adaptor. Dimensions: 22cm x 12cm x 8,6 cm. Weight: approx. 1 kg. Colour: Black