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  • Home » Pro Recording » Signal Processors » Microphone Preamps » Focusrite » Focusrite LIQUID 4PRE Microphone Preamplifier
  • Home » Focusrite » Microphone Preamps » Focusrite LIQUID 4PRE Microphone Preamplifier

Focusrite LIQUID 4PRE Microphone Preamplifier

LIQUID 4PRE

4-channel Mic Preamp with Emulations of Classic Mic Pres and Pro Tools-compatible Plug-in Control
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Focusrite LIQUID 4PRE Microphone Preamplifier

Focusrite LIQUID 4PRE Microphone Preamplifier Description

Focusrite LIQUID 4PRE

 four-channel microphone preamplifier utilises The Liquid Channel's proven Liquid technology, marrying a hugely flexible analogue front end with cutting-edge dynamic convolution DSP to deliver the sounds of 40 vintage and classic microphone preamplifiers across all four channels. Augmented by fully digital controls and remote software control over Ethernet, LIQUID 4PRE provides the ultimate fluid multi-channel front-end.

Features

Focusrite LIQUID 4PRE with 4 Liquid Pres, each loaded with 40 classic pre-amp emulations

Proven Liquid technology: the same pre-amp technology as the industry standard Liquid Channel, marrying a hugely flexible analogue front end to cutting-edge dynamic convolution DSP, to deliver the finest vintage emulations

Total recall of every parameter across all four channels: 99 Unit Setup Memories provide instant safety back-ups, multiple user sets, a backup of session settings

Remote control via dedicated software: LIQUID4CONTROL provides comprehensive remote control over Ethernet, as well as management of multiple LIQUID4PREs, placing comprehensive pre-amp control inside the DAW or digital console

Remote control via ProTools hardware: Exclusive plug-in allows integrated remote control via ProTools hardware and software, including Icon and Venue systems

Adjustable harmonic distortion: Accounts for variance in vintage originals whilst providing additional variance over the sound of eveyr pre-amp emulation

Session saver: An automatic gain control circuit intelligently reduces input level to help avoid critical overs

192kHz internal processing and ADC/DAC as standard: Pristine state-of-the-art conversion ensures every subtle nuance of the pre-amp emulation is preserved

Expandable library of emulations

A growing number of additional vintage emulations are available for free via Focusrite's 'Liquid Assets' site

Classic Focusrite High Pass filter, Phantom power and Phase reverse: These essential pre-amp features are selectable and editable independantly for every channel

Focusrite LIQUID 4PRE simple multiple unit configurations: Allows eight channels of audio from two units over a single ADAT or EtherSound connection, as well as much larger multi-unit configurations

Operator Lock Function: Allows secure use in public arenas, avoiding any unwanted alteration of pre-amps settings, including gain

Focusrite LIQUID 4PRE's optional EtherSound output card: Allows eight channels of audio overEthernet, providing effective connectivity for large studios, post productioninstallas and live sound engineers using EtherSound

Specification

Converter Performance

Sample Rate: 44.1, 48, 88.2, 96, 176.4 and 192 kHz
Bit Depth: 24 bit

A/D

Signal to Noise Ratio: 120dB measured with 20Hz/22kHz bandpass A-weighted filter
Frequency Response: +/-0.05dB between 20Hz-20kHz
Maximum Input Level: +22dBu
THD+N: 0.0007% (-103 dB)

D/A

Dynamic Range: 118 dB measured with 20Hz-22kHz bandpass A-weighted filter
Frequency Response: +/-0.05dB between 20Hz-20kHz
Maximum Output Level: +22dBu
THD+N: 0.001% (-100dB)

Jitter

Internal Clock: <50 ps
AES Output: <1 ns
External Clock: <3 ns

Mic Pre

Gain Range: +14 dB to +80 dB, switched in 1dB steps
Frequency Response: Frequency response and harmonic distortion variable, set by pre-amp emulation and harmonics setting chosen (figures shown for FLAT setting with zero harmonics)
THD+N at analogue out: 0.001% measured with a +1 dBu 1 kHz input signal with 20Hz-22kHz bandpass filter, gain +14 dB
THD+N at AES out: 0.0007% measured with a +1 dBu 1 kHz input signal with 20Hz-22kHz bandpass filter, gain +14 dB
Mic Noise: EIN = -128 dB measured at >60 dB of gain with 150 ohm source impedance and 20Hz-22khz bandpass filter
Noise Analogue Out: -92 dBu measured at +14 dB gain with 20Hz-22kHz bandpass A-weighted filter
Noise AES Digital Out: -119 dBFS measured at +14 dB gain with 20Hz-22kHz bandpass A-weighted filter
Maximum Input Level: +8dBu
Input Impedance: Variable, set by pre-amp emulation chosen
CMRR: Electronic: >85 dB @ 60 dB of gain

Line Input

Gain Range: +32 dB to -10 dB, switched in 1 dB steps
Frequency Response: 0dB +/-0.1 dB between 20Hz and 20kHz
THD+N at analogue out: 0.001% measured with a +18 dBu 1 kHz input signal with 20 Hz/22 kHz bandpass filter
THD+N at AES out: 0.0007% measured with a +18 dBu 1 kHz input signal with 20 Hz/22 kHz bandpass filter
Noise Analogue Out: -92 dBu measured at 0 dB gain with 20 Hz/22 kHz bandpass A-weighted filter
Noise AES Digital Out: -120 dBFS measured at 0 dB gain with 20 Hz/22 kHz bandpass A-weighted filter
Maximum Input Level: +22 dBu

High Pass Filter

Roll-off frequency: 75 Hz, frequency measured at -6 dB down point. 12 dBper octave roll-off

Harmonics

Distortion Range: 0 to 15 where maximum (15) = 10% of 2nd-, 20% of 3rd-and 10% of 5th-order at 0dBFS (level-dependant distortion)

Rear Panel Connections

Mic Inputs 1 to 4: XLR female
Line Inputs 1 to 4: XLR female
Line Outputs 1 to 4: XLR male
AES Digital Input: XLR female
AES Digital Outputs (CH 1+2 and CH 3+4): XLR male
Wordclock Input: BNC, hi Z or 75 ohm input impedance (soft switchable)
Wordclock Output: BNC, Low Z input impedance
ADAT From Slave: Toslink optical Input socket
ADAT Main Output and Aux Output: 2 x Toslink optical Output socket
Ethernet Control: Ethernet (10baseT on RJ45)
Ethersound (optional): Ethernet (RJ45)

Weight and Dimensions

Weight: 5.3 kg
Dimensions (W x H x D): 484 x 85 x 270 mm
2U rackmount

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