The SMC 7.1 expands analog surround monitoring to 8 channels and offers Solo, Solo-In-Place and Solo-To-Center, as well as a headphone jack.

Inputs & Speaker Management
- Two 7.1 and two stereo input sources can be connected to the SMC 7.1. This is important because in monitoring, two productions are always compared with each other. A subwoofer can be added to a stereo input by activating the LFE button. Each loudspeaker can be switched on and off individually, and the SMC 7.1 remembers the last speakers used for each source.

The Solo-In-Place function now turns the loudspeaker on/off switches into solo buttons. This allows each loudspeaker to be heard alone at its position. Solo-To-Center places the selected loudspeaker on the center speaker, so that it can be listened to exactly from the front, in case critical listening is required. An alternative output is available for connecting a pair of stereo loudspeakers.
The 45mm all-aluminum rotary knob moves an 8-level potentiometer. Mute is especially important when the DAW is sending full-range audio garbage due to a problem. Mute can be used quickly to protect speakers and hearing. As an alternative to the speakers, headphones can be used for monitoring. The headphones can be switched on and have their own volume control.
 
Expansion Rack
- The SMC 7.1 can be installed in the Expansion Rack, to be screwed into a 19-inch rack. The Expansion Rack is equipped with a switch that can passively route the stereo output signal of the SMC 7.1 to four stereo outputs. In this combination, the SMC 7.1 is expanded by three additional stereo outputs. This allows a 7.1 loudspeaker array and full-range, mid and nearfield stereo speakers to be controlled and monitored.
 
The Specs
Analog inputs & outputs; XLR & DB25 (balanced)
- Maximum input: 22 dBu
- Input impedance: 20 kΩ
- Output impedance: 100 Ω
- Frequency range (-3 dB): 10 Hz – 150 kHz
- THD +N (10 Hz – 22 kHz, 0 dBu): 0.001 %
- Noise (A-weighted): -93 dBu
- Crosstalk (1 kHz): -92 dB
- Common mode rejection (1 kHz): 82 dB
- Dynamic range: 115 dB
 
Standard Headphones Output, 6.35 mm (1/4") TRS Jack
- Wiring: Tip = Left, Ring = Right, Sleeve = GND
- Frequency range (-3dB): 10 Hz – 80 kHz
- Crosstalk (1 kHz): -70 dBu
- Total harmonic distortion (0 dBu, 1 kHz, 40 kΩ load): 0.001 %
- Noise (A-weighted): -93 dBu
- Dynamic range: 115 dB
 
Internal Linear Power Supply with Toroidal Transformer
- Operating voltage for analog audio: +/- 18 V
- Operating voltage for relays and LEDs: +12 V
 
Mains Power Supply
- Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz
- Fuse for 230 V: T 500 mA
- Fuse for 115 V: T 1 A
- Power consumption: max. 30 W
 
Physical
- Dimensions: 11" W x 4" H x 13" D
- Unit weight: 9.04 lb