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Hands-On Review: Focusrite Scarlett 8i6 and 18i6

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These solid, low latency interfaces offer Focusrite mic preamps and a useful software package for a great value.

  Focusrite Scarlett 18i6 - USB Audio Interface Focusrite Scarlett 8i6 - USB Audio Interface
Converters 24-bit
<500 picoseconds clock jitter
24-bit
<500 picoseconds clock jitter
Sample Rates 44.1, 48, 88.2 and 96kHz 44.1, 48, 88.2 and 96kHz
Analog In 2 x XLR/TS combo Microphone/Instrument (front panel)
6 x 1/4" TRS phone Line (rear panel)
2 x XLR/TS combo Microphone/Instrument (front panel)
2 x 1/4" TRS phone Line (rear panel)
Input Impedance Microphone: 2kΩ
Line: 10kΩ
Microphone: 2kΩ
Line: 10kΩ
Analog Outputs 2 x 1/4" TRS phone Monitor
1 x 1/4" TRS phone Headphone
4 x 1/4" TRS phone Monitor
1 x 1/4" TRS phone Headphone
Maximum Output Level +12dBu +12dBu
Digital Input Connectors 1 x Lightpipe ADAT optical (also functions in 2-channel optical S/PDIF mode)
1 x RCA coaxial S/PDIF
1 x RCA coaxial S/PDIF
Digital Output Connectors 1 x Lightpipe ADAT optical (also functions in 2-channel optical S/PDIF mode)
1 x RCA coaxial S/PDIF
1 x RCA coaxial S/PDIF
MIDI In/Out 2 x 5-pin DIN MIDI I/O 2 x 5-pin DIN MIDI I/O
Sync In/Out S/PDIF S/PDIF
Headphone Output Yes Yes
Gain Range Microphone: +13dB to +60dB
Line Inputs 1+2: -10dB to +36dB
Instrument: +13dB to +60dB
Microphone: +13dB to +60dB
Line Inputs 1+2: -10dB to +36dB
Instrument: +13dB to +60dB
Dynamic Range A/D: >109dB, A-weighted (all analog inputs)
D/A: >106dB, A-weighted (all analog outputs)
A/D: >109dB, A-weighted (all analog inputs)
D/A: >106dB, A-weighted (all analog outputs)
THD + N Microphone: 0.001% (measured at 1kHz with a 20Hz to 22kHz band-pass filter)
Line Inputs 1+2: 0.001% (measured with 0dBFS input and 22Hzto 22kHz band-pass filter)
Line Inputs 3+8: 0.001% (measured at 1kHz with a 20Hz to 22kHz band-pass filter)
Instrument: 0.004% (measured with 0dBu input and 20Hz to 22kHz band-pass filter)
Output: 0.001% (0dBFS input, 20Hz to 22kHz band-pass filter)
Microphone 0.001% (measured at 1kHz with a 20Hz to 22kHz band-pass filter)
Line Inputs 1+2: 0.001% (measured with 0dBFS input and 22Hzto 22kHz band-pass filter)
Line Inputs 3+4: 0.003% (measured at 1kHz with a 20Hz to 22kHz band-pass filter)
Instrument: 0.004% (measured with 0dBu input and 20Hz to 22kHz band-pass filter)
Output: 0.001% (0dBFS input, 20Hz to 22kHz band-pass filter)
Noise Microphone EIN: 124dB analog to digital (measured at 60dB of gain with 150Ω termination 20Hz to 22kHz band-pass filter)
Line Inputs 1+2: -90dBu (22Hz to 22kHz band-pass filter)
Line Inputs 3+8: -100dBu (22Hz to 22kHz band-pass filter)
Instrument: -87dBu (20Hz to 22kHz band-pass filter)
Microphone EIN: 124dB analog to digital (measured at 60dB of gain with 150Ω termination 20Hz to 22kHz band-pass filter)
Line Inputs 1+2: -90dBu (22Hz to 22kHz band-pass filter)
Line Inputs 3+4: -100dBu (22Hz to 22kHz band-pass filter)
Instrument: -87dBu (20Hz to 22kHz band-pass filter)
Crosstalk >100dB >100dB
Frequency Response Microphone: 20Hz to 20kHz, +/- 0.2dB
Line: 20Hz to 20kHz, +/- 0.2dB
Instrument: 20Hz to 20kHz, +/- 0.1dB
Microphone: 20Hz to 20kHz, +/- 0.2dB
Line: 20Hz to 20kHz, +/- 0.2dB
Instrument: 20Hz to 20kHz, +/- 0.1dB
Display Dual, 2-segment input meters: -18 and 0dBFS
Locked indicator
USB connected indicator
Instrument input source selection LED for channels 1 and 2
48V phantom power switch and LED for inputs 1 and 2
Dual, 2-segment input meters: -18 and 0dBFS
Locked indicator
USB connected indicator
Instrument input source selection LED for channels 1 and 2
48V phantom power switch and LED for inputs 1 and 2
Power Requirements 12VDC via included power supply 12VDC via included power supply
Minimum System Requirements Mac OS X - Windows XP SP3 (32-bit), Vista (32-bit), Windows 7 32- and 64-bit) Mac OS X - Windows XP SP3 (32-bit), Vista (32-bit), Windows 7 32- and 64-bit)
Dimensions (WxDxH) 8.5 x 8.7 x 1.8" (215 x 220 x 45mm) 8.5 x 8.7 x 1.8" (215 x 220 x 45mm)
Weight 3.3 lb (1.5kg) 3.3 lb (1.5kg)
Specialties 18 input by 6 output software mixer 18 input by 6 output software mixer