Focusrite Scarlett 18i20 (4th Generation)
General
Number of microphone preamps: 8
Phantom power: Yes (independent)
Instrument inputs: 2
Line inputs: 8
Air Mode: Yes
Auto Gain: Yes
Clip Safe: Yes
Line outputs: 10
Headphone outputs: 2
ADAT inputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
ADAT outputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
S/PDIF inputs: 1
S/PDIF outputs: 1
MIDI inputs: 1
MIDI outputs: 1
Talkback: Yes
Loopback: Yes
Connectivity: USB Type-C
Protocol: USB 2.0
Form factor: Desktop / Rack-mountable (1U)
Simultaneous I/O: 26 x 26
A/D resolution: 24-bit/192 kHz
Bus-powered: No
Supported sample rates
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Microphone inputs
Frequency response: 20-20 kHz ± 0.06 dB
Dynamic range: 116 dB (A-weighted)
THD+N: -100 dB at 8 dB gain
EIN (Equivalent Input Noise): -127 dBu (A-weighted)
Maximum input level: 16 dBu
Gain range: Gain: 69 dB
Impedance: 3 kΩ
Variable Line Inputs
Frequency Response: 20-20 kHz ± 0.05 dB
Dynamic Range: 115.5 dB (A-weighted)
THD+N: -100 dB at 8 dB gain
Maximum Input Level: 22 dBu
Gain Range: 69 dB
Impedance: 24 kΩ
Line Outputs (Balanced)
Frequency Response: 20-20 kHz ± 0.02 dB
Dynamic Range: 122 dB (A-weighted)
THD+N: -112 dB
Maximum Output Level: 16 dBu
Impedance: 200 Ω
Headphone Outputs
Frequency Response: 20-20 kHz ± 0.1 dB at 33 Ω / 300 Ω
Dynamic Range: 112 dB at 33 Ω, 116 dB at 300 Ω
THD+N: -100 dB at 33 Ω (minimum) / -110 dB at 300 Ω (minimum)
Maximum Output Level: 5 dBu into 33 Ω / 11 dBu into 300 Ω
Maximum Output Power: 57 mW into 33 Ω / 27 mW into 300 Ω
Impedance: 11 Ω
Analog-to-Digital Converter
THD+N: -110 dB
Dynamic Range: 120 dB
Digital-to-Analog Converter
THD+N: -115 dB
Dynamic range: 130 dB (A-weighted)
Dimensions and Weight
Height: 46.55 mm
Width: 442 mm
Depth: 259.73 mm
Weight: 3.304 kg
Number of microphone preamps: 8
Phantom power: Yes (independent)
Instrument inputs: 2
Line inputs: 8
Air Mode: Yes
Auto Gain: Yes
Clip Safe: Yes
Line outputs: 10
Headphone outputs: 2
ADAT inputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
ADAT outputs: 2 (16 channels at 44.1/48 kHz and up to 8 channels at 96 kHz)
S/PDIF inputs: 1
S/PDIF outputs: 1
MIDI inputs: 1
MIDI outputs: 1
Talkback: Yes
Loopback: Yes
Connectivity: USB Type-C
Protocol: USB 2.0
Form factor: Desktop / Rack-mountable (1U)
Simultaneous I/O: 26 x 26
A/D resolution: 24-bit/192 kHz
Bus-powered: No
Supported sample rates
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Microphone inputs
Frequency response: 20-20 kHz ± 0.06 dB
Dynamic range: 116 dB (A-weighted)
THD+N: -100 dB at 8 dB gain
EIN (Equivalent Input Noise): -127 dBu (A-weighted)
Maximum input level: 16 dBu
Gain range: Gain: 69 dB
Impedance: 3 kΩ
Variable Line Inputs
Frequency Response: 20-20 kHz ± 0.05 dB
Dynamic Range: 115.5 dB (A-weighted)
THD+N: -100 dB at 8 dB gain
Maximum Input Level: 22 dBu
Gain Range: 69 dB
Impedance: 24 kΩ
Line Outputs (Balanced)
Frequency Response: 20-20 kHz ± 0.02 dB
Dynamic Range: 122 dB (A-weighted)
THD+N: -112 dB
Maximum Output Level: 16 dBu
Impedance: 200 Ω
Headphone Outputs
Frequency Response: 20-20 kHz ± 0.1 dB at 33 Ω / 300 Ω
Dynamic Range: 112 dB at 33 Ω, 116 dB at 300 Ω
THD+N: -100 dB at 33 Ω (minimum) / -110 dB at 300 Ω (minimum)
Maximum Output Level: 5 dBu into 33 Ω / 11 dBu into 300 Ω
Maximum Output Power: 57 mW into 33 Ω / 27 mW into 300 Ω
Impedance: 11 Ω
Analog-to-Digital Converter
THD+N: -110 dB
Dynamic Range: 120 dB
Digital-to-Analog Converter
THD+N: -115 dB
Dynamic range: 130 dB (A-weighted)
Dimensions and Weight
Height: 46.55 mm
Width: 442 mm
Depth: 259.73 mm
Weight: 3.304 kg
