This product has been discontinued.

Take Motorized Remote Control of a Rack-based Mix.

Equipped with 100 mm touch-sensitive motorized faders and 4x2 AVB networking, the StudioLive® CS18AI control surface provides a compact, intuitive mixing solution for PreSonus® StudioLive RM16AI, RM32AI, RML16AI, and RML32AI rack-mount digital mixers. The CS18AI connects to the network with a CAT5e/6 Ethernet cable, eliminating the need for cumbersome analog or digital snakes and stage boxes, and offers a host of other useful features.

With AVB audio networking, the CS18AI not only transmits control data but also sends and receives audio. You get two mic/line inputs with remote-controllable XMAX preamps, and two line inputs that can be used as sources for talkback, 2-track playback, or other FOH sources. The CS18AI’s TRS line-level returns are shared with the monitor line outputs and headphone output, and can be sourced from any RM mixer output, including the solo bus, main mix, or any aux mix.

Full Control of RM AI Mix Systems up to 64 Channels.

Every aspect of the CS18AI was designed to help you mix with ease and reliability. RGB Select buttons make it easier to identify channels, layers, and mixes based on color. The CS18AI lights the way through mixing with 146 illuminated buttons; 16 high-res, 64x96-pixel scribble strips; a touch-sensitive, 4.3-inch (109 mm) LCD display; and 20 11-segment LED level ladders. If you need to control it, it lights up!

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Key features:

  • 18 100 mm, touch-sensitive, motorized faders: 16 Channel, 1 Flex, 1 Master
  • Full Fat Channel DSP control with individual encoders and 12-LED displays for gate, compressor, 4-band EQ
  • Sixteen 12-LED channel ladder level and Fat Channel displays, 3 11-LED Select Channel Level/Compressor/Gate displays, 11-LED displays for Main Center/Mono, Left, and Right
  • Variable-color (RGB) Select buttons for easy channel and Filter DCA group identification
  • 16-channels of high resolution 64 x 96 scribble strip display with Pan indicators
  • 4.3-inch / 109 mm color touch-sensitive display
  • Navigate using traditional layers or with intuitive PreSonus Filter DCA groups
  • Studio One DAW control surface ​functionality
  • 2 remote XMAX mic preamps, 2 ¼” TRS line inputs, 2 XLR line outputs
  • 4-pin XLR lamp connection and footswitch input
  • Same footprint as StudioLive 16.4.2AI for integration in 19” rack mounts
  • Optional iPad® mount accessory

Technical Specifications

Computer system requirements:

Below are the minimum computer-system requirements for the StudioLive® CS18AI:


  • Internet connection
  • AVB-compatible Ethernet connection
  • Internet connection for registration and software download


  • Mac® OS X 10.8 64-bit or later
  • Intel® Core™ i3 processor or better, 4 GB or more RAM (8 GB recommended)


  • Windows® 7x 64/x86 SP1 or Windows 8/8.1 x64/x86 or Windows 10 x64/x86
  • Intel Core 2 processor (Intel Core i3 processor or better recommended)
  • 4 GB RAM (8 GB or more recommended)


  • Operating System: iOS® 7.03 or later
  • iPad® Air, iPad mini with Retina display, iPad (3rd or 4th generation), iPad mini

Studio One® 3 computer system requirements

UC Surface computer system requirements


TypeEthernet / AVB

Microphone Inputs

TypeXLR Female (via Combo), Balanced Remote
Maximum Input Level+12 dBu, ±0.5 dB, Unity Gain
Gain Control Range65 dB, ±1 dB
Gain0 to +65 dB, ±1 dB
Frequency Response to Main Output20 Hz-20 kHz, ±0.5 dBu
Frequency Response (A-D)10 Hz to 40 kHz, ±0.2 dB
Input Impedance1 kΩ
THD to Main Output<0.005% max, +4 dBu, 20 Hz-20 kHz, unity gain, unwtd
THD+N (min. gain, a-wtd)< 0.005%
Dynamic Range (min. gain, a-wtd)> 114 dB
Dynamic Range (mid. gain, unwtd)> 105 dB
Signal-to-Noise Ratio to Main Output94 dB
Common Mode Rejection65 dB (1 kHz, unity gain)
EIN (+55 dB gain, 150Ω input, 20 Hz-22 kHz, a-wtd)< 128 dBu
Phantom Power+48 V (±2 V, > 8 mA per channel)

Line Inputs

Type¼” TRS Female (via Combo), Balanced
Maximum Input Level+18 dBu
Frequency Response (A-D)20 Hz to 20 kHz, ±0.2 dB
Frequency Response to Main Out20 Hz to 20 kHz, ±0.5 dBu
THD to Main Output<0.005% max, +4 dBu, 20 Hz-20 kHz, unity gain, unwtd
THD+N (1 kHz, -1 dBFS, a-wtd)< 0.005%
Input Impedance10 kΩ
Signal-to-Noise Ratio to Main Output94 dB
Max Input Level+18 dBu
Dynamic Range (min. gain, a-wtd)> 114 dB
Dynamic Range (mid. gain, unwtd)> 105 dB
Crosstalk (1 kHz, channel-to-channel)< -80 dB


Length22.35" (58.6 cm)
Width (chassis only)17.22" (43.74 cm)
Maximum Height6.9" (17.53 cm)
Weight23 lbs. (10.43 kg)

Monitor Line Outputs

TypeXLR Male, Electrically Balanced
Maximum Output Level+24 dBu, ±0.5
Frequency Response20 Hz to 20 kHz, ±0.2 dB
Dynamic Range (a-wtd)> 112 dB
THD+N (1 kHz, -1 dBFS, un-wtd)< 0.005%
Output Impedance100Ω
Crosstalk (1 kHz, channel-to-channel)< -80 dB

Headphone Outputs

Type¼” TRS Female, Stereo, Unbalanced
Maximum Output Level120 mW/channel @ 60 Ω
Frequency Response20 Hz to 20 kHz, ±0.5 dB
Dynamic Range (a-wtd)> 103 dB
THD+N0.01%, 1 kHz, max gain, 20 Hz BW, unwt
Crosstalk (1 kHz, channel-to-channel)< -80 dB
Signal-to-Noise Ratio96 dB 1kHz, max gain, 20 kHz BW, unwtd

System Crosstalk

Input to Output-90 dBu +4 dBu, 20 Hz-20 kHz, unwtd
Adjacent Channels-87 dBu +4 dBu, 20 Hz-20 kHz, unwtd

Digital Audio

ADC Dynamic Range118 dB min (A-wtd, 48 kHz)
DAC Dynamic Range118 dB min (A-wtd, 48 kHz)
Sample Rate44.1, 48 kHz
Reference Level for 0 dBFS+18 dBu


Clock Jitter<20 Ps RMS, 20 Hz-20 kHz
Jitter Attenuation>60 dB 1 ns in ~1 ps out

Power / Environmental

Input-Voltage Range100 to 230V, 50-60 Hz
Power Requirements200W
Temperature Range0˚ to 40˚ Celsius / 32˚ to 104˚ Fahrenheit

NOTE: As a commitment to constant improvement, PreSonus Audio Electronics, Inc., reserves the right to change any specification stated herein at any time, without notification.