We always quote 'real world' performance figures (measured to the AES17 standard). Some companies choose to quote chipset performance, which is misleading, and here's why.

Line

• Gain Range: +10dB to +40dB continuously variable
• Input Impedance: >1M Ohm

Mic

• Gain Range: 0 to +60dB in 10dB steps
• Input Impedance: Variable as follows: 600 Ohm, 1k4 Ohm, 2k4 Ohm, 6k8 Ohm
• EIN: -128dB with 150 Ohm terminating impedance at 60dB of gain
• Noise: -97dBu
• THD: 0.001% with -20dBu 1kHz input and 20Hz?22kHz bandpass filter

Compressor (VCA mode)

• Threshold Range: -28dB to +12dB
• Ratio: 1.5:1 to 10:1
• Slope: Soft knee
• Attack: 100? to 100ms
• Release: 100ms to 7s, variable or auto (program dependent)

Compressor (Vintage Opto mode)

• Threshold Range: -28dB to +12dB
• Ratio: 1.5:1 to 5:1 in Comp mode, 5:1 to 20:1 in Lim mode
• Slope: Soft knee in Comp mode, Hard knee in Lim mode
• Attack: Fixed
• Release: Fixed

EQ

• Low Pass Filter: 18dB/oct from 400Hz to 22kHz
• High Pass Filter: 18dB/oct from 20Hz to 1k6Hz
• Parametric section is comprised of: Low-mid & Hi-mid parametric, each with continuously variable boost/cut with centre detent, frequency sweep control with two ranges, and fully variable Q. Low-mid frequencies 40Hz to 400Hz (120Hz to 1k2Hz when x3 is pressed). Hi-mid frequencies 600Hz to 6kHz (1k8Hz to 18kHz when x3 is pressed)
• Shelving section is comprised of: High Frequency Shelf: The frequency range steps are 1.5kHz, 3.3kHz, 6.8kHz and 15kHz (2.2kHz, 4.7kHz, 10kHz and 18kHz when Hi Range is engaged). Low Frequency Shelf: The frequency range steps are 20Hz, 56Hz, 160Hz and 460Hz (33Hz, 95Hz, 270Hz and 655Hz when Hi Range switch is engaged)

Gate

• Threshold Range: -40dB to +10dB
• Gate Range: 0 to -80dB
• Attack: switched fast or slow
• Release: 100ms to 5s
• Hold: 20ms to 4s
• Expander Ratio: 0 to 5:1

De-Esser

• Threshold Range: 22dB
• Frequency Range: 2k2 to 9k2
• Ratio at centre frequency: 2:1

Limiter

• Threshold Range: 20dBu
• Ratio: infinite (Brick Wall)
• Attack: Frequency dependent

Weight

• 7.58kg
• 16.7Ibs

Dimensions

• 484mm (W) x 85mm (H) x 250mm (D)
• 19' (W) x 3.5' (H) x 9.8' (D)

Optional A-D Converter Specifications

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, 50Hz-100kHz
•  <:400ps, 700Hz-100kHz

Frequency response 

•  All ranges: 20Hz?0kHz ?0.3dB (50Hz?6kHz ?0.1dB)
•  176.4kHz, 192kHz : 16Hz?5kHz ?0.5dB

THD+n 

•  ?17.5dB A-weighted, audio band-limited, 1kHz, -60dB FS input
•  Maximum 0.004% at ?dB FS (1kHz)
•  Minimum 0.0008% at ?3dB FS (1kHz)

Idle channel noise

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

Crosstalk 

•  ?09dB at 12kHz