PreSonus

AudioBox 1818VSL

Audio Interface

Main Details
Maker PreSonus Company
Function
Channels/Tracks
  • 2 × Channel (Mic/instrument input channels)
  • 6 × Channel (Mic/line input channels)
  • 8 × Channel (Channels ADAT optical input and output (at 44.1 or 48 kHz; 4 channels at 88.2 or 96 kHz))
Form Factor 19" Rackmount
Signal Path Digital Hardware (including Analog Connections)
Made In China
Date Produced 2011
Dimensions
(H × W × D)
  • 1U rackmount
Weight 4.6 lb. (2.1 kg)
Power Source External Power Adapter +18 VDC, 2.6A, center-positive
Notes Specifications (from the manufacturer's product page)

Microphone Inputs
Connector Type Combo, XLR, female, balanced
Mic Preamp EIN -133 dB, 20 kHz BW, max gain, Rs=40Ω, A-wtd
Frequency Response 20 Hz - 22 kHz, ±0.25 dB, unity gain
THD+N 0.002%, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
S/N Ratio 97 dB, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
Gain Control Range -15 dB to +65 dB
Input Max Headroom +16 dBu, < 0.5% THD
Input Impedance 1.7 kΩ
Phantom Power +48 VDC, 32 mA total unit

Line Inputs
Connector Type Combo, ¼” TRS, female, balanced
Frequency Response 20 Hz - 22 kHz, ±0.25 dB, unity gain
THD+N 0.002%, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
S/N Ratio 98 dB, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
Gain Control Range -20 dB to +20 dB
Input Max Headroom +21 dBu, < 0.5% THD
Input Impedance 10 kΩ

Instrument Inputs
Connector Type Combo, ¼” TS, female, unbalanced
Frequency Response 20 Hz - 22 kHz, ±0.25 dB, unity gain
THD+N 0.003%, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
S/N Ratio 89 dB, +4 dBu, 1 kHz, unity gain, 22 kHz BW, A-wtd
Gain Control Range -30 dB to +50 dB
Input Max Headroom +21 dBu, < 0.5% THD
Input Impedance 1 MΩ

Analog Outputs
Connector Type ¼” TRS, female, impedance balanced
Frequency Response 20 Hz - 22 kHz, ±0.25 dB
THD+N 0.003%, 1 kHz, 22 kHz BW, A-wtd
S/N Ratio 109 dB, 1 kHz, 22 kHz BW, A-wtd
Output Level +10 dBu, <0.5% THD
Output Impedance 51Ω

Headphone Outputs
Connector Type ¼” TRS, female, stereo
Maximum Power 120 mW/ch @ 60Ω load
Frequency Response 20 Hz - 20 kHz, ±0.5 dB, max gain
THD+N 0.01%, 1 kHz, max gain, 20 kHz BW, A-wtd
S/N Ratio 96 dB, 1 kHz, max gain, 20 kHz BW, A-wtd

Digital
ADC Dynamic Range 114 dB, 48 kHz, A-wtd
DAC Dynamic Range 114 dB, 48 kHz, A-wtd
Host Interface USB 2.0 high-speed
Bit Depth 24-bit
Sample Rates 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
Maximum Latency 6 mS, analog input to analog output
ADAT Optical I/O Toslink™ connectors, ADAT/SMUX formats
S/PDIF I/O RCA female connectors
Word Clock Output BNC connector, 4.5 Vpp @ 75Ω load
MIDI I/O 5-pin DIN connectors
Additional Specifications
Interface Protocol USB 2.0
Connections
USB 2.0 port
Connector: USB
MIDI In/Out
Connector: DIN
Word-clock output
Connector: BNC
Headphone output
Connector: 1/4" Phone Jack (6.35mm)
Description: Stereo
L/R Line outputs
Connector: 1/4" Phone Jack (6.35mm)
Description: Balanced
S/PDIF
Connector: RCA (Phono, Cinch)
Description: Stereo
Line outputs x 8
Connector: 1/4" Phone Jack (6.35mm)
Description: Balanced
ADAT optical input and output
Connector: JIS F05 (Toslink, ADAT Lightpipe)
Description: 8 Way, 4 Way
Mic/instrument input channels x 2
Connector: Combo XLR / 1/4"
Description: Balanced
Mic/line input channels x 6
Connector: Combo XLR / 1/4"
Description: Balanced
Controls
Parameter: Mic gain range x8
Control Type: Rotary Pot
Range: 0 to +35 dBu
Parameter: Headphone level control
Control Type: Rotary Pot
Parameter: Main level control
Control Type: Rotary Pot
Parameter: +48V phantom power for 1-4 channels
Control Type: Latching Push Switch
Parameter: +48V phantom power for 5-8 channels
Control Type: Latching Push Switch

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