Focusrite ISA2-AD 2 Channel 192kHz A-D Converter

The ISA stereo ADC embodies cutting-edge conversion technology, encompassed within pristine Focusrite circuitry, providing 2 channels of the highest quality 24-bit conversion at all sample rates up to 192kHz. Digital output formats include 2 channel single/dual wire AES/EBU or 2 channel S/PDIF, all via a 9 pin D-type connector, as well as optical S/PDIF and ADAT. The ADAT (TOSlink) port is stereo and operates at 24-bit, up to 96kHz.

The card comes as standard with the ISA One Digital and can be retrofitted to an ISA 430 MKII or an ISA One at any time.

Output formats (All channels)

• AES/EBU (5V / 110 ohms), S/PDIF (0.8V / 75 ohms)
• ADAT lightpipe (SMUX I/II/IV)
• S/PDIF lightpipe

• Bit depth: 24 bits

AES3 output jitter

• <:500ps>
• <:400ps>

Frequency response

• All ranges: 20Hz–20kHz ± 0.3dB (50Hz–16kHz ± 0.1dB)
• 176.4kHz, 192kHz : 16Hz–55kHz ± 0.5dB

THD+n

• –117.5dB A-weighted, audio band-limited, 1kHz, -60dB FS input
• Maximum 0.004% at –1dB FS (1kHz)
• Minimum 0.0008% at –13dB FS (1kHz)

Idle channel noise

• 113.5dB at 44.1kHz, CCIR-weighted, full bandwidth

• Crosstalk: –109dB at 12kHz

Additional links and info

• ISA A-D converters
• AES17
• ISA430 MkII product page
• ISA One Analogue product page