<h5>Shure SCM268 4-Channel Microphone Mixer</h5>

Shure SCM268 4-Channel Microphone Mixer
Shure $331.00 $316.00316.00
The Shure SCM268 is a 4-Channel Microphone Mixer. Six transformers provide protection from RF interference for exceptionally quiet performance in a straightforward mixer.
Shure SCM268 4-Channel Microphone Mixer
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The SCM 268 features six transformers—four transformer balanced XLR microphone level inputs, one transformer balanced XLR mic/line output, and one internal low stray field, toroidal power transformer. All of these transformers provide protection from RF interference, prevent ground loops, and make the SCM 268 exceptionally quiet. The internal toroidal power transformer means you no longer have to deal with the annoying ""wall wart."" Add to this a rugged half-rack chassis with exceptionally solid rack mounting hardware.


  • Five unbalanced aux level inputs (Phono connectors)
  • LED peak output meter
  • One unbalanced aux level output (Phono connector)
  • IEC power cord connector
  • 12V phantom power for condenser microphones
  • Built-in low cut filters on mic inputs

Shure SCM268 Specs

4 - Balanced XLR Microphone
2 - Stereo (L/R) RCA line inputs
1 - Balanced XLR output (mic/line level)
1 - AUX unbalanced RCA Phono
Monitor/Headphone Out
No - AUX output serves as secondary output and cab be used as a monitor source
2 - AUX RCA phono as described under outputs
Link Input/Output
MIC (XLR): Designed for use with 19-600 ohm load, 1.2k ohms actual, -5dBV clipping level
AUX: Designed for use with - / < 2k ohm load, 21k ohms actual, >28 dBV clipping level
MIC: Designed for use with low-Z inputs, 0.2 ohms actual, -21 dBV clipping level
LINE: Designed for use with > 600 ohms, 72 ohms actual, +18 dBV clipping level
AUX: Designed for use with > 2k ohms, 870 ohms actual, +7dBV clipping level
Low-Impedance Mic Input (150 ohms): MIC 32dB, LINE 72dB, AUX 60dB - Outputs
Line Input: MIC -9dB, LINE 31dB, AUX 19dB - Outputs
Stereo Input: MIC -5dB, LINE 35dB, AUX 23dB - Outputs
Hum & Noise
Equivalent Input Hum and Noise: -124 dBV (150 ohm source; 22Hz to 22kHz)
Output Hum and Noise: (22 Hz to 22kHz; channel controls full counterclockwise)
Master full counterclockwise -92dBV
Master full clockwise -70dBV
Frequency Response
(Ref 1kHz, channel and master controls centered)
MIC/LINE Inputs: 150Hz to 20kHz + / - 2dB
AUX Inputs: 20Hz to 20kHz + / -2dB
<0.25% at +4 dBu output level, (through 22Hz -22kHz filter; MIC inout 1 and Master at center, all other controls full counterclockwise)
6-segment LED meters
Sealed Rotary Potentiometers: MIC 1-2, STEREO 1-3 and MASTER gain controls. BASS and TREBLE control.
DIP Switches
Control Voltage Out
Phantom Power
12 Vdc open-circuit through 340 ohm series resistors
Operating Temperature
Operating: -7 to 49 degrees C (20 to 120 degrees F)
Storage: -29 to 74 degrees C (-20 to 165 degrees F)
SCM268: 100 - 120 Vac, 50/60 Hz, 60mA
SCM268E: 220 - 240 Vac, 50/60 Hz, 30mA
1.72 x 8.60 x 6.37 in. (43 x 218 x 162mm)
2.62 lbs (1.20 kg)

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New product. Includes standard 1-year manufacturer warranty.