The MH-442 is a convenient digital expansion card for the Focusrite ISA 428 "Pre Pack" studio preamp. The MH-442 features up to 24-bit/192kHz conversion, signal-to-noise ratio of 120dB and Word Clock I/O for synchronization with your digital studio gear. It can be easily retrofitted to your existing ISA 428 with no soldering or complicated installation procedures.

Installs easily on existing ISA 428 units

Offers 16, 20 or 24-bit conversion at sample rates of 44.1, 48, 88.2, 96, 176.4 or 192kHz

Standard or 256x "Super Clock" Word Clock options

AES/EBU, S/PDIF and ADAT optical outputs

Installs easily on existing ISA 428 units

It's easy to retrofit your existing ISA 428 with the MH-442 Digital Expansion Card. No soldering or complicated installation procedures are required. Simply undo a few screws, hook up one clip connector to join to the main PCB and you're in business. Your ISA 428, a landmark among analog preamps, is now the ideal front end for virtually any digital recording system!

Even if you're only recording at 16-bit/44.1kHz resolution, the MH-442 can handle it. It features adaptive dithering and supports most sample rates - 44.1, 48, 88.2, 96, 176.4 or 192kHz. So from CD quality to high definition, you'll be sure to get the best possible A/D conversion. And with a signal-to-noise ration of 120dB (A-weighted), the MH-442 delivers one of the widest dynamic ranges available from any digital converter.

When using multiple pieces of digital equipment it is necessary to make sure that their bitstreams are all in sync. The MH-442 features Word Clock I/O via standard BNC connectors. Plus, it supports both standard Word Clock and the Digidesign-specified 256x "Super Clock" for sync compatibility with Pro Tools hardware.

The MH-442's digital audio outputs include AES/EBU (both single and dual wire specs), S/PDIF and ADAT formats (ADAT is maximum 96kHz via 2 ports) with sample rates selectable between 44.1, 48, 88.2, 96, 176.4 and 192kHz, 16, 20, and 24 bits with adaptive dithering. Connections are via 2 x 9-pin D-type connectors (optional, see here for an [url=http://www.sweetwater.com/store/detail/OctopreAES]AES[/url] adapter and here for a [url=http://www.sweetwater.com/store/detail/OctopreSpdif]S/PDIF[/url] cable) and standard ADAT optical connections. Word Clock is via BNC in and out.

AES/EBU and S/PDIF outputs via dual 9 pin D-type connectors

ADAT optical output

Bit depths 16, 20 or 24 bit

Frequency options 44.1, 48, 88.2, 96, 176.4 and 192kHz

Clock options Standard or 256x

Meter: 0dBfs = +22dBu

SNR - 120dB A-weighted