The Focusrite ISA eight - channel 192kHz A - D converter stands out from the crowd. It was the first audio A - D converter to use Burr - Brown Pro Audio Amplifiers and top - notch PCM4220 A - D converter chips. With advanced conversion tech in Focusrite's custom analogue circuitry, it offers unmatched performance, boasting a 122dB dynamic range and jitter under 250 picoseconds. You can find more details about Focusrite's ISA A - D converters on the right. This card can be easily added to an ISA428, ISA428 MkII, or ISA828 at any time. Its 25 - pin D - Type connector allows seamless integration with Pro Tools HD and other well - known hard disk recorders and mixing desks. All eight converters are accessible with this option, even for ISA428 and ISA428 MkII. When installed in these four - channel mic preamps, the extra 4 converters are fed by four XLR inputs labeled 'ADC Input' on the back. It supports various digital formats, including eight - channel single/dual wire AES/EBU and S/PDIF output, and eight - channel ADAT lightpipe (SMUX/SMUX2) output. Word clock i/o is available via dedicated BNC connectors.

Using this Focusrite A - D card is easy. First, if you have an ISA428, ISA428 MkII, or ISA828, you can retrofit the card at any time. Just connect it using the 25 - pin D - Type connector to Pro Tools HD or other compatible hard disk recorders and mixing desks. When it's installed in a four - channel mic preamp, use the four XLR inputs labeled 'ADC Input' on the back to feed the extra 4 converters. As for the digital outputs, you can choose from eight - channel single/dual wire AES/EBU, S/PDIF, or eight - channel ADAT lightpipe (SMUX/SMUX2) output. Make sure to connect the word clock using the dedicated BNC connectors. When it comes to maintenance, keep the card in a clean and dry environment. Avoid exposing it to extreme temperatures or humidity. If there are any issues, check the connections first before seeking further help.