Focusrite ISA 428 Pre Pack A-D Card
ADC Convertor

Focusrite' s new ADC convertor is the company' s first 192kHz design, (it' s also amongst the world' s first multi-channel 192kHz audio input devices.) As ever, Focusrite' s bespoke A/D designs have been crafted in order to maximize the specifications achievable with any given converter chip-set. The ISA428' s ADC offers extremely low distortion, and ultra-high signal/noise ratio specifications. (better than 120dB "A-weighted", comparable with Digidesign' s Pro Tools HD .)

All the advantages of integral A/D conversion within the main analogue unit' s chassis apply; the shortest possible record path is achieved, all unnecessary external analogue connections are dispensed with, and a quiet and controlled operating environment for the conversion process is ensured. There are no extraneous clocks or sources of digital noise, so there is no loss of accuracy nor clarity. The result is simply detailed, crystal clear, beautiful audio conversion.

Focusrite' s revolutionary custom Soft Limiter provides worry-free, musical A/D conversion, handling even the hottest analogue signals with style and grace. It brings warmth to the conversion process whilst eliminating the undesirable artifacts caused by digital clipping. Rather than simply protecting the A/D in a brick-wall fashion, the Soft Limiter tailors the last 6dB dynamic range of the A/D converter to cater for the last 12dB of analogue headroom. This ensures the A/D converter never overloads at any point during the analogue performance. Unlike conventional limiters, it provides an absolute limit without destroying the audio integrity of the source signal.

Focusrite  | ISA 428  | ISA 428-AD