Acoustic Bass Compact Outboard Preamp

The Fishman B-II Acoustic Bass compact outboard preamp is protected by a rugged injection-moulded case. The B-II is specifically tailored for the acoustic bass. It comes equipped with Volume, Bass and Treble sliders, a new easy access battery compartment and an AC adapter jack.
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Fishman B-II Specifications:

• Belt Mounted
• Measured with all tone controls at center detent and volume at max.
• Nominal Input Level: -20 dBV
• Input Overload (20 Hz to 20 kHz): +8 dBV
• Input Impedance: 10 MOhm
• Output Impedance: Less than 3.5 kOhm
• Output Level: -20 dBV with minimum input gain position
  -8 dBV with maximum input gain position
  THD: .01% at 1 kHz, -10dBV input, -4 dBV output
  Signal to Noise Ratio: 91 dB (A weighted, -10 dBV input,
  -4 dBV output)
• Bass Control Range: ± 11 dB at 60 Hz
  ± 3 dB at 350 Hz
• Treble Control Range: ± 11 dB at 10 kHz
  ± 3 dB at 1.2 kHz
• Current Drain: Less than .4 mA
• Power Supply: 9V alkaline battery (estimated 1400 hours
  continuous use) Regulated 9V AC Adapter
  Tip = negative 9 V