Focusrite OctoPre LE 8 Channel Mic Pre (New Factory Repack)

OctoPre LE, the "lite edition" of the company's established OctoPre, brings Focusrite pre-amplification and A/D-D/A conversion to a new level of affordability for DAW and digital console users. OctoPre LE provides eight channels of pristine Focusrite preamps, including two "Super Channels" that offer mic impedance matching and instrument DI inputs plus other features.

 

With the optional A/D-D/A board installed, OctoPre LE brings more to the DAW via ADAT* lightpipe than ever before, allowing users to make the most of often neglected ADAT* inputs and outputs for tracking and monitoring. In addition, the A/D-D/A option provides wordclock in and out as well as being the only converter in its class to feature 256x clock - a must-have for Pro Tools engineers.

 

Extremely easy to use, OctoPre LE helps to save session time and engineer heartache. Auto switching front and rear panel inputs and total control of the digital I/O from the front fascia allow the unit to remain racked and patched, with every I/O solution available at the flick of a switch. In typical Focusrite fashion, the OctoPre LE upholds professional standards throughout, boasting class-leading specifications:

 

Analogue

 

THD: 0.003% with 0dBu input (maximum gain)

Wide bandwidth frequency response: 3 dB down at 200kHz

Signal to noise ratio of 124dB

Digital

 

Dynamic range of 110 dB A-weighted

Housed in a sturdy 1U chassis with the familiar Platinum fascia, OctoPre LE is the first of the Platinums to feature a 'porthole'-style peak-reading meter, similar to Focusrite's industry standard Red range of products. The meter can be switched to display the input level of any one of the eight channels. The two Super Channels feature DI for guitars or similar instruments, as well as a low impedance switch for making the most of ribbon mics and allowing deliberate mic mis-matching for enhanced creativity. Other features include phantom power, independent clip metering and low cut filters on every channel.

 

Mic Input Response

Gain = +13dB to +60dB

Input Impedance = 2.5kW/ 150W on Lo Z (Ch1 & 2)

EIN  = 124dB @ 60dB Gain with 150W Termination & 22Hz/22kHz Filter

THD+N @ Min Gain (+13dB) = 0.0006% with 0dBu input & 22Hz/22kHz Filter

THD+N @ Max Gain (+60dB) = 0.003% with -36dBu input & 22Hz/22kHz Filter

THD+N @ Max Input (+9dBu) = 0.0008% with 22Hz/22kHz Filter

Frequency Response:

Min Gain (+13dB) with -13dBu input = -0.4dB @ 10Hz & -3dB @ 122kHz

Max Gain (+60dB) with -60dBu input = -2.3dB @ 10Hz & -3dB @ 67kHz

CMRR @ Max Gain (+60dB) = 80dB

Line Input Response

Gain = -10dB to +36dB

Input Impedance = 24kW

Noise @ Unity Gain (0dB) = -88dBu with 22Hz/22kHz Filter

S/N Ratio relative to max headroom (+36dBu) = 124dB

S/N Ratio relative to 0dBfs (+22dBu) = 110dB

THD+N @ Unity Gain (0dB) = 0.001% with 0dBFS (+22dBu) input and 22Hz/22kHz Filter

Frequency Response @ Unity Gain (0dB) = -0.5dB @ 10Hz & -3dB @ 110kHz

Instrument Input Response

Gain = +13dB to +60dB

Input Impedance = 1MW

Noise @ Min Gain (+13dB) = -87dBu with 22Hz/22kHz Filter

Noise @ Max Gain (+60dB) = -42dBu with 22Hz/22kHz Filter

THD+N @ Min Gain (+13dB) = 0.001% with 0dBu input & 22Hz/22kHz Filter

Frequency Response @ Min Gain (+13dB) with -13dBu input = -0.4dB @ 10Hz & -3dB @ 122kHz

Input Meter

Peak Level Moving Coil Meter

-24dBfs to +2dBfs (-2dBu to +24dBu), +22dBu = 0dBfs

Overload LEDs triggered @ 0dBfs (+22dBu)

High Pass Filter

Roll Off = 12dB/Octave 2 pole filter

Cut Off Frequency: -3dB @ 120Hz, -6dB @ 85Hz, -12dB @ 56Hz

Optional Digital Converter

DAC Performance

Playback Sample Frequency = 44.1kHz & 48kHz

Maximum Bit Depth = 24-bit

Maximum analogue output level = +22dBu

Dynamic Range = 107dB ‘A’ weighted

ADC Performance

Sample Frequency = 44.1kHz & 48kHz

Bit Depth = 24-bit

Maximum analogue input level = +22dBu (0dBfs)

Dynamic Range = 109.5dB ‘A’ weighted

Connections

Digital in/out: ADAT-type optical ‘lightpipe’

Wordclock in/out: BNC