Focusrite - ISA 428 MkII 4-Channel Microphone Preamp

| Mfg # ISA428MK2
| UPC # 815301005124
Our Price: $1,499.99
Retail: $1,899.99 | You Save: 21%
Free shipping
*****5 / 5 (based on 1 Reviews)
Write a Review

ISA 428 MkII puts four Heritage Sound mic preamps, instrument inputs and line ins at your fingertips. In a useful enhancement to the original mic pre design, three additional input impedances have been added to the classic ISA110 setting, allowing it to match any microphone, old or new, and deliver a range of sounds from the character and warmth of a vintage mic to the clear transparency of a modern design.


  • Four ISA series transformer-based preamps - ISA series mic preamps have been the producers' choice on countless hit records over the last two decades.
  • Eight-channel optional A-D converter - Four additional A-D converter inputs allow eight channels of high quality conversion, with a dynamic range of 122dB and jitter performance below 250 picoseconds.
  • Selectable impedance - Ideal for mic matching or extended microphone creativity. Settings include the 'Vintage ISA110' setting, providing the original Focusrite signature sound.
  • Four front panel instrument inputs - Instant access on the front fascia - no separate DI box required.
  • Dedicated analogue insert points - Switchable insert points are featured on every channel, allowing routing (between preamp and output) through additional external processing.
  • Accurate LED meters for every channel - Clear metering designed to catch even the fastest and most elusive of transients.
Based on 1 Reviews
  • (1)
  • (0)
  • (0)
  • (0)
  • (0)

Product Reviews
  • *****
  • Classic ISA Sound
  • May 25, 2013
  • By: Gary

I bought this unit along with the Focusrite ISA828 A/D Card to utilize the extra 8 channels of ADAT I/O I had on my Apogee Symphony and couldn't be happier! My main vocal mic for recording has always been the SM7b by Shure but it requires a lot of extra gain to make it worth while. Thats where the ISA fits in perfectly. With most basic preamps as you add gain most of the time your also adding more noise to your recordings as well. This isn't the case with the ISA428 MkII, It stays perfectly clean and apparent as you increase the gain without being a unpleasant or "sterile" sounding clean. I had a session lined up shortly after buying this pre and I told the artist that I wanted to test out some new gear on him seeing that we have worked together for a while and I know how he sounds fairly well now. After a few takes he instantly stops and says "Everything is so much more clear and apparent now. Im going to really have to step up my vocals this time." I think that speaks well enough for this product. A+ on this one Focusrite!

0 people found this review helpful. Was this review helpful for you? Report As Inappropriate

Product Warranty Information

Tel: (866) 362-8774; Email:; Focusrite Website | Website Contact | Warranty Info; 1 year Parts and Labor

  Product warrenty information

All instruments in our catalogs and on our shopping site carry the manufacturers' warranties against defects in parts and workmanship. Should a defect occur within the manufacturer's warranty period, contact us immediately.

We will be glad to help facilitate the repair or replacement as specified by the manufacturer. The manufacturer will determine whether the defect is covered under their warranty; we do not make that determination.

Please note: U.S.-based manufacturers WILL NOT honor warranties for items sold and shipped outside the U.S. Also, if a school, school district, or board of education purchases an instrument and resells it to an individual, the manufacturer considers the warranty to be void. Warranties are extended only to the original purchaser!

All warranties, stated or implied are held with the product manufacturer and they vary from item to item. Consult the documentation that came with your product for details in addition to the information below.
Sign up for the Cascio Interstate Music newsletter
Visit the Cascio Interstate Music Retail Store
Focusrite was established in 1985 and the founding principles of the company were to develop products that sounded more musical, in addition to just measuring well. Based just outside of London, they work with the best design talent throughout the world.
Beat out Price! Find a lower price somewhere else? Give us a call at 800.462.2263 and we'll beat that price!