RDC1-0034 V2 Stereo, Differential, high performance preamplifier. 2 x OPA1632

RDC1-0034 v2 Stereo - A two-channel, fully differential bass preamplifier that delivers the highest sound quality with very low noise. The operational amplifiers installed in this module - OPA1632D , operate in a wide frequency range up to 180 MHz, have a high signal slew rate - 50 V / µs and have extremely low distortion - 0.000023%, with a maximum signal-to-noise ratio and wide dynamic range. Differential input and output reduces even-order harmonics and minimizes noise interference.
This module (replacing a pair of RDC1-0034a but overall smaller) uses more power switching and gain settings. On the board, simple jumpers provide for switching the power mode depending on the source (single- or bipolar) and enabling the unbalanced signal source mode. Vishay high-precision MELF resistors are used as standard, which set the gain. The remaining components are better than 1% accuracy for resistors, and NP0/X7r dielectric for SMD capacitors. In addition, the board has slots for output resistors to adjust the gain (to your requirements), and it is easier to tweak / replace the decoupling capacitors with more audiophile ones.

Specifications:

Band of reproducible frequencies (limited by LPF) ...... - 1.6Hz ... 80kHz
Total harmonic distortion THD + N @ 1 kHz…... - 0.000022%
Common mode rejection ratio……………........… - 90dB
Output signal slew rate …………………........... 50V/µs
Output current……………………………………………………………..... 85mA
Recommended supply voltage:
Unipolar (jumper J5 installed):…....….….. +12V
Permissible supply voltage (unipolar): +5…+15V
Bipolar :…………………….........….…..…… ±2.5….±15V

Board dimensions: 59 x 42 mm
Mounting Hole Center Distance :52 x 35mm

Schematic diagram:

Mounting diagram of balanced connection:

Wiring diagram for connecting unbalanced inputs:

note on wiring diagrams:
Capacitors C3-C6 are not shown. Input configuration modes and power modes can be combined.