Front panel, per channel

• 1/4" instrument input
• Variable input impedance - Low, ISA 110, Medium, High
• Input selection - Mic, Line, Instrument
• 0 - 30 dB/30 - 60 dB gain switch
• Phantom power switch
• Phase invert switch
• 0 - 60 dB gain in 10 dB steps
• 0 - +20 dB continuously variable trim
• Variable high-pass filter with on/off switch
• Insert point on/off switch
• Eight-LED user-calibrated level meters
• Single power switch

Rear panel, per channel

• XLR-F mic inputs
• 1/4" TRS line inputs
• 1/4" TRS Sends
• 1/4" TRS Returns
• XLR-M line output
• Single peak meter calibration dial
• Single IEC power socket

Maximum Input and Output Levels

• Maximum Output Level : +24 dBu with a THD+N < 0.01% at 1kHz measured with 150 Ω source impedance and 22Hz/22kHz band-pass filter
• Maximum Microphone Transformer Input Level :  +7 dBu with a THD+N < 0.7% at 1kHz measured at 0 dB of gain with 150 Ω source impedance and 22Hz/22kHz band-pass filter

Mic Input Response

• Gain range 0 dB to +60 dB in 10 dB steps, plus 0 dB to +20 dB continuously variable trim
• Input Impedance : Switched Impedance setting Equivalent Input Impedance at 1 kHz
  • Low = 600 Ω
  • ISA 110 = 1.4 kΩ
  • Med = 2.4 kΩ
  • High = 6.8 kΩ
• EIN (Equivalent Input Noise) : Measured at 60 dB of gain with 150 Ω source impedance and 22 Hz-22 kHz band pass filter
  • -127 dB
• Noise : Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter
  • -97 dBu
• Signal-to-Noise Ratio :  Measured with 150 Ω source impedance and 22 Hz-22 kHz band pass filter 121 dB relative to max output +24 dBu
• Total Harmonic Distortion + Noise Measured with a -20 dBu input signal at +30 dB of gain and with a 22 Hz-22 kHz band pass filter
  • < 0.0007% at 1 kHz
• Frequency Response : At minimum gain (0 dB)
  • -0.5 dB at 10 Hz,
-1 dB at 135 kHz, relative to 1 kHz
• At +60 dB gain : -6 dB at 10 Hz, -1 dB at 115 kHz, relative to 1 kHz
• CMRR (Common Mode Rejection Ratio) :
  • -94 dB for mic input at 60 Hz for max. output = +24 dBu
  • -91 dB for mic input at 10 kHz for max. output = +24 dBu
• Crosstalk Channel to Channel : Mic input, with I/P = 0 dBu, gain = 0 dB @ 1 kHz input to channel A, channel B output = -85 dB

Line Input Response

• Gain range :  -20 dB to +10 dB in 10 dB steps, plus 0 dB to +20 dB continuously variable trim
• Input Impedance : 10 kΩ from 10 Hz to 200 kHz
• Noise : Noise at main output with gain at unity (0 dB) measured with 50 Ω source impedance and a 22Hz - 22 kHz band pass filter -97 dBu
• Signal-to-Noise Ratio : Measured with 50 Ω source impedance and a 22 Hz-22 kHz band pass filter
  • 121 dB relative to max output +24 dBu
• Total Harmonic Distortion + Noise : Measured with a 0 dBu input signal, +10 dB of gain and a 22 Hz-22 kHz band pass filter
  • < 0.0002% at 1 kHz
• Frequency Response : At minimum gain (0 dB)
  • -0.3 dB at 10 Hz, -1 dB at 80 kHz, relative to 1 kHz
• Crosstalk Channel to Channel : Line input, with I/P = 0 dBu, gain = 0dB @ 1 kHz input to channel A
  • Channel B output
= -91 dB

Instrument Input Response

• Gain range : +10 dB to +40 dB continuously variable trim
• Input Impedance : 2 MΩ
• Noise : Measured with 22 Hz-22 kHz band pass filter
  • Minimum gain (+10 dB) = -95 dBu
• Frequency Response :
  • At minimum gain (+10 dB) -0.1 dB at 10 Hz,
-1 dB at 115 kHz, relative to 1 kHz
  • At maximum gain (+40 dB) -2.5 dB at 10 Hz, 
-1 dB at 110 kHz, relative to 1 kHz

High-Pass Filter

• Roll-Off  : 18 dB per octave (3 pole filter)
• Frequency Range : Continuously variable from 16 Hz to 420 Hz (-3 dB)

Weight and Dimensions

• W x D x H : 480 mm x 280 mm x 44 mm
• Weight : 3.7 kg