The sounds of vintage classics with digital ease of use.
The Focusrite MH445 Liquid Channel is a revolutionary professional channel strip that can precisely replicate any classic microphone preamp and compressor. The Focusrite MH445 combines radical new analog preamp technology with Dynamic Convolution techniques. The Liquid Channel fuses cutting-edge analog design with lightening fast SHARC DSP. Augmented by fully digital controls and optional remote software, The Liquid Channel provides the ultimate fluid vintage collection.
Rather than creating a similar sound to vintage units, as with modeling devices, The Liquid Channel precisely replicates their sonic behavior. This is achieved through Dynamic Convolution, the application of a unique, level-dependant set of responses to an audio signal. These measured responses, sampled at numerous levels and with every possible setting combination, are applied to the input stream on a sample-by-sample basis for accurate replication.
Mic-pre replication can't be achieved with software alone. Hardware is required in addition to account for the physical interaction with the microphone. As a result, Focusrite invested vast amounts of time and energy into designing and building the ultimate "liquid" preamplifier, able to match the input impedance and signal path (transformer or electronic) of the device being replicated.
Second order harmonic distortion is a beneficial artifact of analog circuits (especially tube and transformer-coupled designs) providing the much-loved warmth. However, often 2 units of the same type will vary in the amount of second order distortion produced, so an additional control for modifying this vintage property is provided. This allows for precise matching of the Liquid Channel to your own beloved mic pre.
The Liquid Channel combines a highly complex, massively flexible analog front-end with Dynamic Convolution processing, which utilizes lightening-fast SHARC chips and runs at sample rates of up to 192kHz. The front panel controls are digital, with tactile rotary encoders; all parameters can be stored in one of 99 program memories. At the press of button, you can reload all mic-preamp, compressor and EQ settings for an individual session. If using The Liquid Channel in conjunction with a recording platform (e.g. Pro Tools), both the session files and the Liquid Channel's program memory can be sent via standard data transfer methods, providing a completely mobile recording session. Perfectly replicated vintage classics with the power and ease of use of the digital domain.
The USB port on the rear panel allows remote control of The Liquid Channel, leaving the processor safely racked away. But that's not all. The software application also serves as an archiving system for additional replicas and program memories, and permits downloads of additional classic units from www.ffliquid.com.
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Focusrite MH445 Liquid Channel Features:
- Precisely replicates any classic mic-pre and compressor
Combines radical new analog pre-amp technology with Dynamic Convolution techniques
Fuses cutting-edge analog design with lightning fast SHARC DSP running at 192kHz
All settings parameters can be stored in one of 99 program memories
USB port on the rear panel allows remote control
Software allows it to serves as an archiving system for additional replicas and program memories
Focusrite MH445 Liquid Channel Specifications:
- Converter performance
Sample rate: 44.1, 48, 88.2, 96, 176.4 and 192kHz
Bit depth: 24-bit
ADC
SNR: 120dB measured with 20 Hz/22 kHz bandpass A-weighted filter
Frequency response: ±0.05 dB between 20Hz — 20kHz
Maximum input level: +22dBu
THD+N: 0.00035% (-109dB)
DAC
Dynamic range: 116dB measured with 20Hz/22kHz bandpass A-weighted filter
Frequency response: ±0.05dB between 20Hz — 20kHz
Maximum output level: +22dBu
THD+N: 0.0007% (-103 dB)
Jitter
Internal clock: <20 pico-seconds
AES digital output: <200 pico-seconds
External clock: <1 nano-second
Mic pre
Gain range: +6dB to +80dB, switched in 1dB steps
Frequency response: variable, set by preamp chosen
THD+N at analogue out: 0.001% measured with a +4dBu 1kHz input signal with 20Hz/22kHz bandpass filter
THD+N at AES digital out: 0.0005% measured with a +4dBu 1kHz input signal with 20Hz/22kHz bandpass filter
Mic noise: EIN = -126dB measured at 80dB of gain with 150 ohms source impedance and 20Hz/22kHz bandpass filter
Noise at analog out: -92dBu measured at +6dB gain with 20Hz/22kHz bandpass A-weighted filter
Noise at AES digital out: -119dBfs measured at + 6dB gain with 20Hz/22kHz bandpass A-weighted filter
Maximum input level: +16dBu
Input impedance: variable, set by preamp chosen
CMRR: Transformer: 123dB @ 60dB of gain
Electronic: 102dB @ 60dB of gain
Line input
Gain range: —10dB to +10dB, switched in 1dB steps
0dB ±0.1dB between 20Hz and 20kHz
THD+N at analog out: 0.001% measured with a +18dBu 1kHz input signal with 20Hz/22kHz bandpass filter
THD+N at AES digital out: 0.0004% measured with a +18dBu 1kHz input signal with 20Hz/22kHz bandpass filter
Noise at analogue out: -92dBu measured at 0dB gain with 20Hz/22kHz bandpass A-weighted filter
Noise at AES digital out: -120dBfs measured at 0dB gain with 20Hz/22kHz bandpass
A-weighted filter
Maximum input level: +22 dBu
High pass filter
Roll off frequency: switchable between 75Hz and 120Hz, frequency measured at —6dB down point, 12dB per octave roll-off
Harmonics
Distortion range: 0 to 15 where 15 (maximum) = 10% of 2nd-, 20% of 3rd- and 10% of 5th-order at 0dBfs (level-dependent distortion)
Compressor
In As Original mode the parameter ranges will be the same as on the original unit being replicated. In Free mode the parameter ranges are as follows:
Threshold range: -40dB to 20dB switched in 1dB steps.
Ratio range: 1:1 to limit
Attack range: 0.1 mS to 2.5 S
Release range: 0.1 mS to 2.5 S
Make-up gain: -20dB to +20dB switched in 0.5dB steps
EQ
High Shelf
Frequency range: 200Hz to 20kHz
Gain: +/-18dB
Mid Band
Frequency range: 100Hz to 10kHz
Gain: +/-18dB
Q: variable between 0.8 and 2.5
Low Shelf
Frequency range: 10Hz to 1kHz
Gain: +/-18dB
Weight: 19 lbs./8.6 kg
Dimensions: 19"W x 3-1/3"H x 10-5/8"D/484mm W x 85mm H x 270mm D
2U rackmount
Focusrite MH445 Liquid Channel
All Focusrite products are built to the highest standards and should provide reliable performance for many years, subject to reasonable care, use, transportation and storage.
In the event of a Manufacturing Defect becoming evident within 12 months from date of purchase Focusrite undertakes that the product will be repaired or replaced free of charge if the product is returned to the authorised dealer from whom it was purchased. In these circumstances, or if you need an out-of-warranty repair to your Focusrite product, please contact your local Focusrite distributor in your country of residence or business : Find your local distributor here and you will be advised of the correct return procedure.
Alternatively contact the Focusrite Reseller from which you purchased the product. If you purchase a Focusrite product outside your country of residence or business you will not be entitled to ask your local Focusrite Distributor to honour this Limited Warranty, although you may request a chargeable repair.
Alternatively, the unit may be returned at your cost to the dealer you purchased the unit from so that they can organise a Warranty repair with their Focusrite Distributor.
This Warranty does not include cost of shipping to and from the authorised dealer from whom it was purchased. In every case it will be necessary to provide the original invoice or store receipt to accompany the defective product to the supplying dealer. This Limited Warranty is offered solely to the first purchaser of the product from an Authorised Focusrite Reseller (defined as a reseller which has purchased the Product directly from Focusrite Audio Engineering Ltd. in the UK or its Authorised Distributors outside the U.K,) and is not transferable.
This Warranty is in addition to your Statutory Rights in the country of purchase.
Please note: A Manufacturing Defect is defined as a defect in the performance of the product which may be expected from a reasonable interpretation of the published description and performance specifications as published by Focusrite Audio Engineering Ltd. This does not include damage caused by post-purchase transportation, storage or careless handling, nor damage caused by misuse.
A significant proportion of products returned under Warranty (which are very few in number compared to numbers sold) are found not to exhibit any fault at all. Please check that the mains voltage is correctly set for your local supply and that your connecting cables are in good order and correctly connected.
If in doubt about the product functions please read the user guide and if necessary contact your dealer for advice before returning the product to the supplying dealer. You can also contact the Focusrite Tech Support team at the Focusrite Answerbase for general advice.
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