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Denecke AD-20 Battery Operated, Portable Two Channel Microphone Preamplifier with A/D Converter

B&H # DEAD20 MFR # AD-20
Denecke AD-20 Portable Microphone Preamp


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Ship Time: 7-10 business days 
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You Pay: $289.95

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The AD-20 from Denecke is a high-quality, two channel, battery operated microphone preamp coupled with a low noise, 20-bit analog to digital converter. The S/PDIF outputs are both optical and coaxial and can drive standard consumer DAT machines or computers that accept digital audio.

The main use for the AD-20 is location recording. Most low cost DAT machines have noisy front ends and a good preamp with a higher bit converter can improve the signal-to-noise ratio by up to 15dB.

Number of Channels 2
Inputs 2 x XLR
Output 1 x RCA S/PDIF coaxial
1 x TosLink S/PDIF optical
Phantom Power No
Multi Function A/D converter
Gain Range 41dB
Maximum Output Level 0dB 'digital clipping'
Frequency Response 20 Hz - 30 kHz
Noise EIN: 125dB, unweighted at maximum gain (+45dB)
Dimensions (WxDxH) 3" x 5 3/4" x 1 1/4"
Weight 1 lbs
Specialties Optional line input cables with 22dB pads
Packaging Info
Package Weight 2.0 lb
Box Dimensions (LxWxH) 10.0 x 10.0 x 5.0"
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Batteries & Power

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Required item: Batteries (not included) are required to power this device.

Duracell - 9V Alkaline Battery (Coppertop)
  • Reg. Price: $3.69
  • Instant Savings: -$0.74
  • You Pay: $2.95
  • Limited supply at this price
Watson - 9V Rechargeable NiMH Battery (250mAh)
  • You Pay: $7.95


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Kopul - Studio Elite 4000 Series XLR M to XLR F Microphone Cable - 6' (1.8 m), Black
  • You Pay: $16.99

Digital Cables

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Hosa Technology - S/PDIF RCA Male to RCA Male Digital Cable - 3.3'
  • You Pay: $7.70

Cases & Protection

Porta Brace - SS-A1 Audio Side Slinger (Black)
  • Reg. Price: $172.73
  • Instant Savings: -$30.00
  • You Pay: $142.73
  • Limited supply at this price
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