Focusrite ISA 428 MkII 4-Channel Microphone Preamp
- mfr: AMS-ISA428MK2
- SKU: AMS-ISA428MK2
If paying by debit card, PayPal, Apple Pay, or Google Pay, you will be charged immediately.
Available options:
-
Free standard shipping
*Orders placed before 3 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy
-
Free Local Pickup
Please call for store stock availability.
Requests made before 2:30 PM EST can be available for next-day pickup. Learn more
Additional options:
Product highlights
- Classic ISA mic preamp design with Lundahl LL1538 transformer
- Instrument and line inputs and front-panel switch
- Switchable input impedance including classic ISA 110 setting
- Variable cut-off frequency high-pass filter
- Dedicated switchable insert point
- Per-channel six-segment LED peak-level meters
- Optional A-D card with up to 192kHz, 24-bit sampling
- Brainworx bx_console Focusrite – exclusive plug-in
Focusrite ISA 428 MkII 4-Channel Microphone Preamp
The ISA 428 MkII incorporates four of Focusrite's renowned mic pres in a simple-to-operate 2U enclosure, placing four mic preamps, instrument inputs and line ins at your fingertips. The original Focusrite mic pre was designed to suit the microphones of the time; today's model makes one small change, adding three additional input impedances to the classic ISA 110 setting, allowing you to match any microphone, old or new, and access a wide range of sounds, from the character and warmth of a vintage mic to the clear transparency of a modern design.
Versatile Connections
Each mic pre has the option of mic, line or the front-panel instrument input, with variable input impedance to ensure you are getting the best performance from the source. Up to 60 dB of gain is available on the four-position rotary and gain range switches, with a further +20 dB of continuously variable trim, meaning a huge 80 dB of gain is available should it be required.
High-Pass Filter
The high-pass filter features variable cut-off frequency between 16 and 420 Hz. An array of 6-segment LED meters shows peak signal level for the four mic pres, in addition to the four direct inputs to the optional A-D card. Switchable rear-panel insert points allow the use of inline processors such as compression.
Specifications
Configuration | Core |
---|---|
AC Input Power | IEC power input connector 100 to 240 VAC |
Questions
Shipping and Returns
Same Day Shipping
All orders placed by 4PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.
Free Two-Day Shipping
We offer free expedited shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).
Flexible, Easy Returns
If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.