PreSonus AudioBox 1818VSL USB 2.0 Recording System with Real-time Monitoring Effects


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About PreSonus

The AudioBox 1818VSL from PreSonus is a an 18 input/18 output USB 2.0 audio and MIDI interface that allows for monitoring with low-latency effects. Using the computer's CPU and PreSonus Virtual StudioLive software, the interface provide reverb and delay effects and the same Fat Channel compression, limiting, semi-parametric EQ and high-pass filter, as the PreSonus StudioLive 16.0.2 digital mixer, all with inaudible latency.

Compact and rugged, the interface offers two front-panel microphone/instrument combo and six microphone/line combo inputs, phantom power switchable in groups of four and ten line-level outputs. It features the same high-headroom, Class-A XMAX preamps as the StudioLive mixers and has 24-bit/96kHz converters with 114dB dynamic range for clear, clean audio.

The preamplifiers offer three key advantages - high voltage, discrete components and Class-A circuitry. The net result is low noise, wide dynamic range, extended frequency response and most importantly, musicality and transparency. The unit is housed in a ruggedly built metal chassis. Clip lights are provided for all channels.

The interface includes an 26 x 8 software mixer that along with a laptop or other computer running VSL allows you to mix a studio session or live show featuring a full band, all while monitoring and recording with or without real-time processing. Seamlessly integrated with the included Studio One Artist DAW and VSL, the AudioBox 1818VSL interface works with virtually all Mac and Windows audio-recording software.

PreSonus Features

  • 18 input/18 output 24-bit/96kHz USB 2.0 recording interface
  • 2 Class-A XMAX microphone/instrument preamps
  • 6 Class-A XMAX microphone/line preamps
  • Individual input channel-trim controls with 0 to +35dBu microphone gain range
  • 2 balanced 1/4" TRS phone main outputs with level control
  • 8 balanced 1/4" TRS phone auxiliary line outputs
  • Coaxial S/PDIF and ADAT optical I/O
  • Headphone amplifier with level control
  • Mix, adjust input and playback-returns levels and add effects and signal processing from your laptop or other computer
  • VSL (Virtual Studio Live) 26 x 8 Kernel mode DSP mixer with StudioLive 16.0.2 Fat Channel dynamics processing and EQ for each analog input and its DAW return and two stereo effects buses with reverb and delay
  • VSL includes more than 50 Fat Channel DSP presets for enhancing instrument and vocal recordings
  • Near-zero-latency monitoring with extensive signal processing
  • Power/USB sync LED
  • Clip lights for each channels
  • Left/Right main output meter (dual 7-segment LED ladder)
  • Phantom power switchable in groups of 4
  • MIDI I/O
  • Rugged metal chassis
  • 19" 1U rack mount form factor
  • Includes Studio One Artist software with unlimited track count and over 4GB of third-party resources

PreSonus Specifications

Mic Preamps
Sample Rates
44.1, 48, 88.4 and 96kHz
8 x Combo XLR female
1 x RCA coaxial S/PDIF
1 x TOSLink ADAT optical
Input Impedance
Microphone: 1.7k ohm
Line: 10k ohm
Instrument: 1M ohm
Maximum Input Level
Microphone: +16dBu, <0.5% THD
Line: +21dBu, <0.5% THD
Instrument: +21dBu, <0.5% THD
Microphone: -15dB to +65dB
Line: -20dB to +20dB
Instrument: -30dB to +50dB
10 x 1/4" TRS phone
1 x 1/4" TRS phone Headphone
1 x RCA coaxial S/PDIF
1 x TOSLink ADAT optical 1 x BNC Sync
Output Impedance
Line: 51 ohm
Maximum Output Level
Line: +10dBu, <0.5% THD
Headphone: 120mW/channel @ 60 ohm load
2 x 5-pin DIN I/O
Dynamic Range
114dB (ADC and DAC) @ 48kHz, A-weighted
Microphone: 0.002%, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Line Input: 0.002%, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Instrument Input: 0.003%, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Line Output: 0.003%, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Headphone: 0.01%, +4dBu, 1kHz, unity gain, 20kHz BW, A-weighted
S/N Ratio
Microphone: 97dB, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Line Input: 98dB, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Instrument Input: 89dB, +4dBu, 1kHz, unity gain, 22kHz BW, A-weighted
Line Output: 109dB, 1kHz, 22kHz BW, A-weighted
Headphone: 90dB, 1kHz, maximum gain, 20kHz BW, unweighted
Microphone EIN: -133dB, 20kHz BW, maximum gain, Rs=40 ohm, A-weighted
Frequency Response
Microphone: 20Hz to 22kHz, +/-0.25dB, unity gain
Line Input: 20Hz to 22kHz, +/-0.25dB, unity gain
Instrument Input: 20Hz to 22kHz, +/-0.25dB, unity gain
Line Output: 20Hz to 22kHz, +/-0.25dB
Headphone: 20Hz to 22kHz, +/-0.5dB, maximum gain
Phantom Power
48V, switching in groups of 4
12 VDC external power supply (included) 1A, center-positive
ASIO, Core Audio, WDM, MME and multi-client drivers
System Requirements
Windows Vista, Windows 7 (32- and 64-bit)
Intel Pentium 4 1.6 GHz processor or AMD Athlon 64 3000+ (Turion) (2.8 GHz or faster recommended)
1GB RAM (2GB or more recommended)Macintosh:
Mac OS X 10.6 (Snow Leopard) or later (32- and 64-bit)
Intel Core 1 Solo 1.5 GHz processor (Intel Core Duo or Intel Xeon processor recommended)
1GB RAM (2GB or more recommended)
Latency: 2.8mS to 6mS, analog in to out
Dimensions (W x D x H)
1U rack mount
4.6 lb (2.1kg)
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