Roland SI24 Studio Interface Control Surface

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6 analog outputs. 24-bit/96kHz converters.

The SI-24 Studio Interface is the perfect way to expand the analog inputs and mixing capabilities of a VS-2480/2400. This compact mixer and hardware control surface sports 8 XLR inputs with phantom power, which can be routed digitally to the V-Studio using the 8-channel R-BUS port. The SI-24's 13 motorized faders provide additional realtime control when mixing, making the SI-24 a valuable upgrade.

Compact digital mixer and control surface for use with VS-2480/2400

8 XLR inputs with phantom power and 24-bit/96kHz sound quality

6 analog outputs, plus S/PDIF digital I/O in coaxial and optical formats

13 motorized faders and 12 knobs for additional realtime control when mixing

Route signal to VS-2480/2400 digitally using an 8-channel R-BUS port

Sample Rates: 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

Frequency Response: 96 kHz: 0 Hz40 kHz (+0/-3 dB), 48 kHz: 20 Hz22 kHz (+0/-3 dB), 44.1 kHz: 20 Hz20 kHz (+0/-3 dB)

Nominal Input Level (variable):
INPUT 1-8 (XLR, TRS): +4 dBu -50 dBu
GUITAR (Hi-Z): +4 dBu -50 dBu

Input Impedance:
INPUT 1-8 (XLR, TRS): 24 k Ohms
GUITAR (Hi-Z): 1 M Ohms

Nominal Output Level:
AUX 1 (L, R): 0 dBu
AUX 2 (L, R): 0 dBu

Output Impedance:
MASTER: 1 k Ohms
AUX 1 (L, R): 1 k Ohms
AUX 2 (L, R): 1 k Ohms
PHONES: 22 Ohms

Recommended Load Impedance:
MASTER: 10 k Ohms or more
AUX 1 (L, R): 10 k Ohms or more
AUX 2 (L, R): 10 k Ohms or more
PHONES: 8-600 Ohms

Residual Noise Level (SENS: LINE, IHF-A, Sampling Rate: 96kHz typ.):
MASTER: -86 dBu or less
AUX 1 (L, R): -86 dBu or less
AUX 2 (L, R): -86 dBu or less

Interface Connectors: Digital I/O: Coaxial (conforms to S/P DIF)

R-BUS Connector
Input Jack 1-8 (1/4 in. TRS phone type)
Input Jack 1-8 (XLR type, balanced, phantom power)
Guitar (Hi-Z) Jack (1/4 in. phone type)
Digital In Connectors (Coaxial type)
Digital Out Connectors (Coaxial type)
Headphones Jack (Stereo 1/4 in. phone type)
Master Out Jack L/R (1/4 in. phone type)
AUX 1 Send Jack L/R (1/4 in. phone type)
AUX 2 Send Jack
L/R (RCA phono type)

Power Supply: AC 117 V, AC 230 V or AC 240 V

Power Consumption: 20W

Dimensions: 446.0 (W) x 326.0 (D) x 103.0 (H) mm, 17-9/16 (W) x 12-7/8 (D) x 4-1/16 (H) in.

Weight: 4.8 kg, 10 lbs. 10 oz.

Accessories: Power supply cable, Owner's manual, Pro Tools mode labels

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 5 out of 5 stars. (66 ratings)
Submitted October 15, 2004 by a customer from

"Roland SI-24 + Roland RPC-1 + Sonar 4 Producer Edition + Roland SI-24 Control Surface Plugin (free) = TERRIFIC COMBINATION!"

Overall: 5 out of 5 stars
(see rating details)
This review has been selected by our experts as particularly helpful.
I think this thing is great. There is really nothing about it I don't like. My only complaint I guess is that its popularity does not seem very widespread making it much more challenging to get support for it if needed. But since it's working perfectly for me, I'm not worried about that currently.
It is perfect for my needs. Recording at 44k, 24-bit in Sonar 4 Producer Edition.
I bought it as a stand-alone product because I already had a few Roland RPC-1 cards to interface it to my computer. It is an excellent combination of audio interface and control surface within Cakewalk Sonar 4 Producer Edition using the Roland SI-24 Control surface plug-in. I love it.
Seems to be built nicely. Looks great.
I'm amazed at what the SI-24 + RPC-1 card can do at this price point. I simply cannot imagine it being any better for my needs.
Manufacturer Support
I love Roland, but I do tend to think sometimes their online support is a bit incomplete - especially for a product like this that isn't exactly mainstream. On the other hand, if you call them up, you can usually get a hold of someone very knowledgable and helpful for any need you might have.
The Wow Factor
Motorized faders - are you kidding me - when they work properly (like they do in my setup all the time) - that's about as sexy as it gets - at least in regards to digital music hardware and software! :)

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