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Focusrite MH441 ISA428 Pre Pack 4-Channel Mic Preamp

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The Focusrite MH441 Microphone Preamp is the perfect multichannel front end for any professional DAW. It features 4 classic Rupert Neve-designed transformer-based preamps with switchable impedance and... Click To Read More About This Product

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The Focusrite MH441 Microphone Preamp is the perfect multichannel front end for any professional DAW. It features 4 classic Rupert Neve-designed transformer-based preamps with switchable impedance and direct instrument inputs. An optional 8-channel 192kHz ADC, preceded by the new proprietary Soft Limiter circuit, provides the perfect path into your Pro Tools HD system.


  • 4 classic Rupert Neve-designed transformer-based preamps
  • 8 channels of cutting-edge A/D conversion, running at up to 192kHz and protected by proprietary optical Soft Limiter circuit
  • Switchable impedance for unparalleled mic matching or extended mic creativity - includes the classic ISA 110 setting
  • Multiple front panel instrument DI - no separate DI box required
  • Analog insert points on every channel
  • Rupert Neve-designed high-pass filters on every channel
  • New moving-coil peak meters and full digital metering (dBFS)
  • Inputs
  • Transformer-based Rupert Neve ISA design
  • Gain range:
  • Line: +/-18dB
  • Mic: 0 to 60dB (6dB steps)
  • Inst: +10 to +40dB variable
  • Input impedance:
  • Line: 10kOhm
  • Mic: Variable - 600, 2.4k, and 6.8kOhm plus original ISA 110 settings
  • Inst: >1M ohm
  • Analog performance
  • Noise:
  • Line: -96dB
  • Mic: -128dB (EIN with 150 ohm input resistance at 60dB of gain)
  • THD:
  • Line: 0.003% with 0dBu, 1kHz input and 20Hz-22kHz band-pass filter
  • Mic: 0.003%
  • Analog I/O connectors
  • DI inputs: 1/4" jack (unbalanced)
  • Mic inputs: XLR (balanced)
  • Line: 1/4" TRS jack (balanced)
  • Insert sends and returns: 1/4" TRS (balanced)
  • Additional ADC inputs: XLR (balanced) line level
  • Analog outputs: XLR (balanced)
  • Digital output option
  • AES/EBU and S/PDIF dual 9-pin D-types
  • Optical ADAT lightpipe
  • Bit depths: 16-, 20-, or 24-bit
  • Sample rate options: 44.1, 48, 88.2, 96, 176.4 and 192kHz
  • Clock options: standard or 256X
  • Meter: 0 dBFS = +22dBu
  • Digital performance
  • SNR: 120dB A-weighted
Pro Coverage
Manufacturer's Warranty
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.

Customer Reviews

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(based on 1 review)

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Reviewed by 1 customer

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By Nick Patronella

from Houston, Tx

I bought this preamp because it was, affordable, 4 channels, top notch, and wAs one of few with A/D converters. I love the colors you can get off of it with switchable impedance and roll off filters. I have the ADC card installed and have it hooked up to my 003 via optical light pipe cable and works flawlessly. Plus you can hook up 4 extra channels with 1/4 that go through the ADC. (TOTAL OF 8 CHANNELS) Couldn't ask for a better deal on quality for a low(er) price than most preamps. (PLUS YOU GET TO SAVE MONEY FOR SOME SINGLE CHANNEL BEAUTS !!!)

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