Angelically pure and versatile input section with a choice of three separate input amplifiers; Mic amp, front panel Instrument input or Line input. Designed for transparency and versatility with a set of High and Low Pass Filters, phase reverse and everything you need from a very classy workhorse.

Key Features:

• Electronically balanced ultra high bandwidth input with -5dB to +75dB gain control & Pad switch
• Continuously Variable input impedance control (1.2kOhm to 10kOhm) can accommodate signals from instruments or be adjusted to suit a wide range of microphones
• Phase Reverse & Phantom Power
• Dedicated Additional XLR Line Input
• Front panel instrument input with ground lift switch
• Independently switched 12dB/Octave HF (Low-Pass) Filter
• Independently switched 18dB/Octave LF (High-Pass) Filter
• Independent routing to L & R Record bus

Technical Specs

Physical *

• Depth    
  200mm / 7.9 inches     including front panel knobs, excluding connectors
  275mm / 10.9 inches     including front panel knobs and connectors
• Height     171mm / 6.75 inches
• Width    
  35mm / 1.4 inches     front/rear panels
  49mm / 1.9 inches     overall width (front and rear panels are offset)
• Weight     260g / 9.5 ounces
• Boxed size     190mm x 290mm x 70mm / 7.5" x 11.5" x 2.5"
• Boxed weight     460g / 16.5 ounces

* All values are approximate
 
Environmental

• Temperature     Operating:     +5 to 30 deg. C
  Non-operating:     –20 to 50 deg. C
  Max. gradient:     15 deg. C/hour
• Relative Humidity     Operating:     20 to 80 %
  Non-operating:     5 to 90 %
  Max. wet bulb:     29 deg. C (non-condensing)
• Vibration    
  Operating:     < 0.2 G (3 – 100Hz)
  Non-operating, power off:     < 0.4 G (3 – 100Hz)
  Shock     Operating:     < 2 G (10ms max.)
  Non-operating:     < 10 G (10ms max.)
  Altitude     Operating:     0 to 3000m (above sea level)
  Non-operating:     0 to 12000m

EQ Filters

• Frequency range     Slope
• HF (Low Pass):     50kHz – 3kHz (–3dB point)     12dB/Octave
• LF (High Pass):     30Hz – 600Hz (–3dB point)     18dB/Octave

Performance Specification*

• Microphone Amplifier Performance
• Gain     Continously variable from +12dB to +75dB
• Independently switchable 20dB Pad available
• Input Impedance     Continously variable from ≅1k2Ω to ≅10kΩ
• Output Headroom     > +26dBu at onset of clipping
• THD + Noise     (-18dBu applied, +28dB gain)    
  < 0.003% at 1kHz
  < 0.006% at 10kHz
• Frequency Response    
  20Hz to 20kHz    
  +0.05dB/-0.1dB
  150kHz     –3dB
• Equivalent Input Noise     (input terminated with 150Ω)    
  < –127dB at maximum gain
  < –90dB at 0dB gain (+20dB with Pad ‘IN’)
• Common Mode Rejection     (-10dBu applied, +30dB gain)    
  > 75dB from 50Hz to 1kHz
  > 70dB at 10kHz

Instrument Input Performance

• Gain    
  Continously variable from +12dB to +75dB
  Independently switchable 18dB Pad available
• Input Impedance     1MΩ
• Output Headroom     > +26dBu at onset of clipping
• THD + Noise     (-18dBu applied, +28dB gain)    
  < 0.03% at 1kHz
  < 0.05% at 10kHz
• Frequency Response    
  20Hz to 20kHz     +0.05dB/-0.1dB
  150kHz     –3dB
• Equivalent Input Noise     (Input terminated with 150Ω)    
  < –82dB at +12dB (minimum) gain
•       < –88dB at +28dB gain (mid’ position)

 
Line Input Performance

• Gain     Continuously variable from –20dB to +20dB
• Input Impedance     > 10kΩ
• THD + Noise     (+24dBu applied, 0dB gain)     < 0.005% from 20Hz to 20kHz
• Frequency Response    
  20Hz to 20kHz     ±0.1dB
  150kHz     –3dB
• Equivalent Input Noise     (Input terminated with 150Ω)     < –90dB

* See User Manual for measurement conditions & references