JDK Audio R20-JDK Microphone Preamp, Dual Channel

The JDK Audio R20 is a dual channel, high quality microphone preamp, designed from the ground up by API's design team to offer a versatile high quality input for microphones as well as instruments.

Each channel features both a mic and an instrument input, with switched phantom power, phase, and pad. Metering is traditional analog VU.

The R20 provides 2 channels of premium analog microphone pre-amplification designed to provide a low noise, solid front end for all audio applications. Meticulously detailed and solidly constructed, the R20 features custom analog VU meters and hands-on analog control of the gain level. Individual toggle switches control the selection of 48v, polarity, pad and a mic/instrument switch.

Features:

• Dual Mic Preamplifiers with 54 dB of gain
• Custom analog VU meters for monitoring output level
• Front panel, high-impedance instrument input with 45 dB of gain
• Peak indicator
• Pad switch attenuates the microphone signal by 20 dB, or the instrument signal by 10 dB
• Switchable 48v Phantom power
• Low distortion, low noise circuitry
• Fully balanced output, both 1/4" and XLR

Specifications:

• Inputs: Balanced XLR Mic jack (rear)
• Un-Balanced 1/4" Instrument jack (front)
• Outputs: Balanced XLR and 1/4" parallel jacks
• Microphone Input
• Max Gain: +55db (no pad), +36db (w/pad)
• Min Gain: +9db (no pad), -10db (w/pad)
• Pot Gain Range: 46db
• Pad: -20db
• Input Impedance: 6.8K Ohms
• Bandwidth: +/- 0.5db, 20Hz - 50kHz
• THD+N @ 1kHz, +4dbu: 0.013%
• Maximum Level: +20dbu
• Signal-to-Noise Ratio: -90db
• Instrument Input
• Max Gain: +31db (no pad), +21db (w/pad)
• Min Gain: +10db (no pad), 0db (w/pad)
• Pot Gain Range: 21db
• Pad: -10db
• Input Impedance: 500K Ohms
• Bandwidth: +/- 0.5db, 20Hz - 20kHz
• THD+N @ 1kHz, +4dbu: 0.002%
• Maximum Level: +20dbu
• Signal-to-Noise Ratio: -80db
• Current: 65mA, 7.3VoltAmps
• Dimensions: 2U EIA 19" Rack
• Height: 3.5 Inches
• Width: 19 Inches
• Depth: 10 inches
• Weight: 12 lbs
• (Specifications subject to change without notice)