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Shure SCM268 Mono Mixer
Product #5121 | SKU SCM268
Usually ships in 3 - 4 weeks
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Shure SCM268 Mono Mixer

Product #5121 | SKU SCM268
Usually ships in 3 - 4 weeks

Product Features
  • F/ Sound Reinforcement
  • Rack-Mountable
  • Compact Design
  • 4 XLR Mic Inputs
  • 4 RCA Inputs
Customer Reviews
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Product Details
  • Product: #5121
  • SKU: SCM268
Not currently for sale
Contact us for more information


The Shure SCM268 4-Channel Microphone Mixer offers simplicity and routing flexibility in a convenient, compact, and rugged enclosure. The SCM268 features 4 high quality transformer-balanced XLR inputs and mic/line level switchable XLR output. Transformer balanced I/O provides maximum audio gain, minimising hum and line noise. Two stereo paired (4 mono) RCA inputs except line level signal from consumer audio devices such as CD and cassette players, DVD players, VCR's etc.

Also provided is an additional, independent AUX line level input with level control via a single RCA connector. Six sealed rotary pots provide level control for mic channels 1 through 4, AUX input channel and Master. The SCM268 also provides 12V phantom power for condenser microphones.


Quality Inputs
Features 4 balanced XLR mic preamps resulting in high input gain and low noise floor.

AUX Line Inputs
4 additional line level inputs via RCA connectors are provided. These inputs are perfect for adapting consumer level devices such as CD and cassette players, audio from VCR's etc.

12V Phantom Power
The SCM 268 provides 12V phantom power for condenser microphones.

Compact Rugged Design
The SCM 268's rugged, compact design provides maximum portability without sacrificing the ruggedness.


Inputs 4 - Balanced XLR Microphone
2 - Stereo (L/R) RCA line inputs
Output 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
ALT I/O 2 - AUX RCA phono as described under outputs
Link Input/Output No
Impedance Input
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
Gain 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 centred)
MIC/LINE Inputs: 150Hz to 20kHz + / - 2dB
AUX Inputs: 20Hz to 20kHz + / -2dB
Distortion <0.25% at +4 dBu output level, (through 22Hz -22kHz filter; MIC inout 1 and Master at centre, all other controls full counterclockwise)
Metering 6-segment LED metres
Controls Sealed Rotary Potentiometers: MIC 1-2, STEREO 1-3 and MASTER gain controls. BASS and TREBLE control.
DIP Switches
Control Voltage Out No
Phantom Power 12 Vdc open-circuit through 340 ohm series resistors
Operating Temperature Operating: -7 to 49 degrees C
Storage: -29 to 74 degrees C
Power SCM268: 100 - 120 Vac, 50/60 Hz, 60mA
SCM268E: 220 - 240 Vac, 50/60 Hz, 30mA
Dimensions 43 x 218 x 162mm
Weight 1.20 kg

Australian Shipping Via DHL
DHL offers a great express shipping service to Australia from New Zealand. We are proud to be able to offer express shipping to main cities on the east coast of Australia, within the same timeframe ( If not quicker ) than local Australian courier companies. Prior to the Covid-19 outbreak, service standards for these main centers was overnight. However these services have been impacted greatly, and as such the overnight service has been suspended. Overnight shipping will likely resume once things have returned to normal.

Qualifying main centers include:

  • Brisbane
  • Sydney
  • Adelaide

Whilst this service is extremely efficient and will likely be delivered within 1-2 days 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it doesn’t arrive within the specified time frame, in most cases it will be delivered by the next day.

While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).

If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.

Please Note: Shipping via DHL is not available to PO boxes and/ or parcel boxes etc.

In The Box

  • Shure SCM268 Mono Mixer
  • Rack Mount Hardware


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  • Product: Shure SCM268 Mono Mixer
  • Manufacturer: Shure
  • Model: SCM268
  • SKU: SCM268
  • RM Product #: 5121
  • Warranty: 2 year manufacturer warranty (excluding consumable e.g. lithium-ion batteries).