Surround Monitor Controller

The SMC is the industry standard for 5.1 surround monitoring. It combines analog 6-channel volume control with speaker management for 5.1 surround and stereo sources.

Source Selection & Speaker Management

Two 5.1 and two stereo input sources can be connected to the SMC. This is important because in monitoring, two productions are always compared with each other.

The DB25 input is used to connect the DAW balanced. In output routing, channels 1-6 should be selected for 5.1 mixing and 7/8 for stereo mixing.

DVDs are often played back on standard DVD or Blu-Ray players for comparison purposes. Their consumer nominal level of -10dBV, which corresponds to a level difference of 7.8dB to the 0dBu studio level, is compensated in the SMC to make loudness comparable. 

The front and rear stereo pair can each be switched to mono. 

Mute All is important when the DAW is sending full-scale audio garbage due to a problem. To protect the speakers and your hearing you can quickly mute here.

Each loudspeaker can also be switched on/off individually.

The balanced inputs are passively looped through to the Slave Out DB25 socket. Here, for example, a multi-channel metering can be connected.

The speaker outputs are balanced with TRS jacks. If mono jack plugs (TS) are used, the signal is automatically unbalanced.


Mix Magazine
Sound On Sound
Highfidelity Review
Studio Magazin

SMC Blog Posts

Other Multichannel Monitor Controller

16-channel Monitor Controller
SMC 7.1
SMC 7.1
7.1 Surround Monitor Controller
Volume 8
Volume 8
8-channel Volume Controller

Stereo Monitor Controller

Phonitor 2
Phonitor 2
Headphone Monitoring Amplifier
Monitor & Talkback Controller
Stereo Monitor Controller
Volume 2
Volume 2
Stereo Volume Controller
Marc One
Marc One
Monitoring and Recording Controller
Control One
Control One
Monitor Controller



Analog inputs & outputs; DB25 & TRS Jack (balanced), RCA

Maximum input gain
21 dBu
Input impedance (DB25 & Jack)
Input impedance (RCA)
Output impedance (Jack)
Frequency range (-3 dB)
10 Hz – 100 kHz
THD +N (10 Hz – 22 kHz, 18 dBu)
0.002 %
Noise (A-weighted)
-98 dBu
Common mode rejection (1 kHz)
70 dBu
Dynamic range
119 dB

Internal Linear Power Supply with Toroidal Transformer

Operating voltage for analog audio
+/- 15 V
Operating voltage for relays and LEDs
+12 V

Mains Power Supply

Mains voltage (factory set)
230 V AC / 50 or 115 V AC / 60 Hz
Fuse for 230 V
T 315 mA
Mains voltage (selectable)
115 V AC / 60 Hz
Fuse for 115 V
T 630 mA
Power consumption
max. 10 W

Dimensions & Weight

W x H x D (width x height x depth)
272 x 91 x 220 mm
10.71 x 3.58 x 8.66 inch
Unit weight
2.3 kg
5.07 lbs
Shipping weight (incl. packaging)
3.25 kg
7.17 lbs

Reference: 0 dBu = 0,775V. All specifications are subject to change without notice.


Due to Covid19 there are no events scheduled at this time.

What does it actually mean …

In Stock!

The product is in stock in our warehouse in Niederkrüchten, Germany, and will be shipped the same or next working day.

We process the orders after receipt of the order and update the stock in the online shop regularly. If the product is no longer available at short notice due to high order volume, you naturally have the right to withdraw from the purchase (see Right of Withdrawal).

In any case, you will receive an e-mail with details of the delivery and the estimated delivery time.

Available soon!

The product is not in stock in our warehouse in Niederkrüchten, Germany. Usually it will be available again within 5 working days.

In any case, you will receive an e-mail with the details of the delivery and the estimated delivery time.

Of course you have the right to withdraw from your purchase (see Right of Withdrawal).

Product Condition


Brand-new product from the current product portfolio.


Demo, exhibit or return item.
In original packaging, incl. manuals and full warranty.
Only slight to no signs of use.


Demo, exhibit or return item.
In original packaging, incl. manuals and legal warranty.
In some cases clear signs of use, which are documented in photos.


"New Old Stock"
After discontinuation of a product still available new products with full warranty.