This product has been discontinued.

Computer system requirements:

Below are the minimum computer-system requirements for UC Surface, QMix-UC, and Studio One®.

Mac

  • macOS® 10.13, 10.14, 10.15 (64-bit only)
  • Intel® Core™ 2 Duo processor (Intel Core i3 or faster recommended)
  • Apple M1 Mac (Apple Silicon Series) not supported
  • 4 GB RAM (8 GB or more recommended)

Windows

  • Windows 10 x64
  • Intel Core 2 Duo (Intel Core i3 or faster recommended)
  • 4 GB RAM (8 GB or more recommended)

Intel Mac and Windows Systems

  • FireWire S800 (IEEE 1394b) port or Thunderbolt port with FireWire S800 adapter
  • Internet connection
  • Internal or external 7200 RPM storage drive highly recommended
  • 30 GB hard disk space
  • Monitor with 1366x768 resolution

iOS

  • iOS 10 or later
  • iPad Pro, iPad Air 2, iPad Air, iPad mini 4, iPad mini with Retina display, iPad (4th generation)

Android

  • Android™ 6.0 (Marshmallow) or later
  • Android smartphone (QMix-UC)
  • Android tablet (8-inch) with 1024x768 resolution (UC Surface)
Note: The minimum system requirements may differ for DAWs other than Studio One. Please check the requirements for your DAW of choice with its manufacturer.
Note that the speed of your processor, amount of RAM and size and speed of your hard drive will greatly affect the overall performance of your recording system. Also, a more powerful system (faster processor with more RAM) will allow for lower latency (signal delay) than you might experience while monitoring audio signals.

VST Compatible Logo ASIO Compatible Logo

VST is a registered trademark of Steinberg Media Technologies GmbH
ASIO is a trademark and software of Steinberg Media Technologies GmbH

Technical Specifications

Microphone Preamps (XLR Balanced)

Type XLR Female, Balanced
Frequency Response to Direct Output 20 Hz to 40 kHz ±0.5 dBu
Frequency Response to Main Output 20 Hz to 20 kHz ±0.5 dBu
Input Impedance (Balanced) 1 kΩ
THD to Direct Output < 0.007%, +4 dBu, 20-20 kHz, unity gain, unwtd
THD to Main Output <0.005%, +4 dBu, 20-20 kHz, unity gain, unwtd
EIN to Direct Output +125 dB unwtd, +130 dB A-wtd
S/N Ratio to Direct Output 105 dB
S/N Ratio to Main Output 94 dB
Common Mode Rejection Ratio 65 dB
Gain Control Range -15 dB to +65 dB (± 1 dB)
Maximum Input Level (unity gain) +22 dBu
Phantom Power +48 VDC

Line Inputs

Type ¼" TRS Female, balanced mono
Frequency Response to Direct Outputs 10-40 kHz, 0 / -0.5 dBu
Frequency Response to Main Outputs 20-20 kHz, ±0.5 dBu
Input Impedance 10 kΩ
THD to Direct Output <0.007%, +4 dBu, 20-20 kHz, unity gain, unwtd
THD to Main Output <0.005%, +4 dBu, 20-20 kHz, unity gain, unwtd
S/N Ratio to Direct Output 105 dB
S/N Ratio to Main Output 94 dB
Gain Control Range (±1 dB) -20 dB to +20 dB
Maximum Input level (unity gain) +22 dBu

Tape Inputs

Type RCA Female, unbalanced (stereo pair)
Maximum Input Level +22 dBu

Auxiliary Inputs

Type ¼" TRS Female, balanced (2 stereo pairs)
Maximum Input Level +22 dBu

Main Outputs

Type Male, balanced (stereo pair); ¼" TRS Female, balanced (stereo pair); XLR Male, balanced (mono)
Rated Output Level +24 dBu
Output Impedance 100Ω

Aux Outputs

Type ¼" TRS Female, balanced (mono)
Rated Output Level +18 dBu
Output Impedance 100Ω

Subgroup Outputs

Type ¼" TRS Female, balanced (mono)
Rated Output Level +18 dBu
Output Impedance 100Ω

Tape Outputs

Type RCA Female, unbalanced (stereo pair)
Rated Output Level +18 dBu
Output Impedance 100Ω

Control Room Outputs

Type ¼" TRS Female, balanced (stereo pair)
Rated Output Level +18 dBu
Output Impedance 100Ω

System Crosstalk

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

Noise Gate / Expander

Threshold Range -84 dB to 0 dB
Attack Time 0.02s to 500 ms / 0.5 ms
Release Time 0.05s to 2s
Expander Attenuation Range 2:1
Gate Attenuation Range -84 dB to 0 dB / ∞
Key Listen Filter 2nd-order resonant bandpass; Q=0.7; OFF, 40 Hz-16 kHz

Limiter

Threshold -56 dB to 0 dB / -28 dBFS
Ratio ∞:1
Attack 20 ms
Hold 10 ms
Release 20 ms

Compressor

Threshold Range -56 dB to 0 dB
Ratio 1:1 to 14:1
Attack Time 0.2 ms to 150 ms
Release Time 40 ms to 1000 ms
Auto Attack and Release Attack = 10 ms, Release = 150 ms
Curve Types hard and soft knee

Parametric EQ

Type 2nd-order shelving filter (Q = 0.55)
Low (Lowpass or Bandpass) 36 to 465 Hz, ±15 dB
Low Mid 90 Hz to 1.2 kHz, ±15 dB
High Mid 380 Hz to 5 kHz, ±15 dB
High (Highpass or Bandpass) 1.4 kHz to 18 kHz, ±15 dB
Q Low Q= 0.55, Hi Q=2.0*

Graphic EQ

31-Band 1/3rd Octave Controls Curve-fitting algorithm
Gain/Attenuation ±15 dB

Digital Audio

ADC Dynamic Range (A-wtd, 48 kHz) 118 dB
DAC Dynamic Range (A-wtd, 48 kHz) 118 dB
FireWire s800, 800 Mb/s
Internal Processing 32-bit, floating point
Sampling Rate 44.1, 48, 88.2, 96 kHz
A/D/A Bit Depth 24
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

Connector IEC
Input-Voltage Range 100 to 230V, 50-60 Hz
Power Requirements 200W
Temperature Range 0˚ to 40˚ Celsius / 32˚ to 104˚ Fahrenheit

Physical

Length 22.35" (58.6 cm)
Width (chassis only) 17.22" (43.74 cm)
Maximum Height 6.9" (17.53 cm)
Weight 23 lbs. (10.43 kg)

*Fully variable through VSL-AI, UC Surface, and SL Remote-AI.

Please see complete mechanical drawings when building a custom rack, desk, or case.

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