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The M-Patch 4 from SM Pro Audio is a passive volume control/switcher that is designed for monitoring and recording setups that require talkback. The unit is an ideal all-in-one solution, performing tasks that include monitor control with mute, mixing, level-matching, headphone monitoring, stereo- to-mono summing, and talkback. All of this is done without adding any coloration or noise due to the controller's 100% passive circuitry.
Multiple input signals can be connected and routed to various destinations, while controlling levels via a series of rotary volume attenuators. Control room outputs are automatically ducked 20 dB when talkback is engaged, using the built-in microphone, or another microphone of choice. Either can be activated from the front panel or via a remote switch.
Multiple switches provide mute, source selection, output assignments and stereo/mono operation. The main volume control is constructed with discrete 0.5% resistors using a switched mechanism that is far more accurate than using variable resistors, especially at low volumes. The chassis is suitable for either desktop use, or can be rack mounted using the included rack ears.
Precision stepped film resistor master rotary volume control
1/4" TRS headphone output with selectable source
Built-in talkback microphone
External microphone input
Talkback with auto-ducking
Dual output selector switches
Stereo/mono and all mute switches
Rackmount ears included
In the Box
SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback
External Power Supply
One (1) Year Warranty
Table of Contents
2 x XLR-1/4" TRS combo Left 2 x XLR-1/4" TRS combo Right 2 x RCA phono Left 2 x RCA phono Right 2 x 1/8" TRS stereo mini 1 x XLR Microphone 1 x 1/4" TS phone Mute Remote (pedal not included) 1 x 1/4" TS phone Microphone Remote (pedal not included)
3 x XLR Left 3 x XLR Right 1 x 1/4" TRS phone Left 1 x 1/4" TRS phone Right 1 x RCA phono Left 1 x RCA phono Right
1 x 1/4" TRS phone Frequency Response: 20 Hz to 20 kHz, +/-0.5 dB Maximum Output Level: 320 mW into 32Ω