Open the box, connect the included cables, and Experience the true tone of your stereo sources with the RNDI-S-Cable-K.

The Rupert Neve Designs RNDI-S is a stereo direct box built for musicians, engineers, and producers who actually care about what comes out of the speakers. Whether you're running stereo keyboards, acoustic guitars with dual pickups, playback rigs, or even plugging in a phone via the 3.5mm input, the RNDI-S delivers that unmistakable Rupert Neve character, rich, musical, and full of dimension. Its custom transformers and class-A, discrete FET circuitry don’t just preserve your tone, they enhance it, adding subtle harmonic content that makes everything feel more alive.

That magic comes from Rupert's signature blend of transformer isolation and a discrete class-A FET input stage driven by 48V phantom power. The input has a high 2.2M Ohm impedance to play nice with everything from passive guitars to quirky synths, and the balanced outputs are built to handle long cable runs without any tone loss. The result? You get studio-grade fidelity on stage or in the control room, with none of the harshness or phase weirdness you sometimes get from lesser boxes. And with zero ICs or digital trickery in the signal path, the RNDI-S stays true to its analog roots, just tone, taste, and top-shelf circuitry in a rugged little box.

Rupert Neve Designs RNDI-S-Cable-K Includes

• 1 x RNDI-S
• 2 x PM2-PM2-20-BLK
• 1 x MIC-XX-20

Rupert Neve Designs RNDI-S-Cable-K Features

• Custom Rupert Neve Designs transformers for rich, powerful tone
• Exceptional performance with any instrument
• Unrivaled clarity from discrete FET amplifiers
• Drives long lines with minimal loss
• Rugged steel frame built for life on the road
• Powered by dual 48V phantom power
• Excellent phase coherence at all frequencies

Rupert Neve Designs RNDI-S-Cable-K Specifications

• CONTROLS & I/O
  • 2x ¼” INPUTS
  • Hi-Z unbalanced inputs with 2.2M Ohms input impedance.
  • 2x ¼” THRU JACKS
  • Parallel ¼” jacks used to send signal to an amp or speaker.
  • 3.5MM INPUT
    • Stereo unbalanced input with 95 kOhm input impedance. Ch 1 = Tip, Ch 2 = Ring.
  • INPUT SELECT
    • Selects ¼” Input or 3.5mm Input.
• 48V POWER LEDS
  • Indicates that +48V phantom power is present for each channel from the connected mic preamp(s). Power must be supplied independently to both channels.
• GROUND LIFTS
  • Isolates the XLR Pin 1 from the instrument input ground.
• OUTPUT
  • Transformer-balanced XLR output. Impedance
• NOISE
  • Measured Output, un-weighted, 22 Hz - 22 kHz, source impedance 150 Ohm.
  • Better than -110 dBV
• INPUT IMPEDANCE
  • Instrument Setting: 2.2 Meg Ohm
  • 3.5 mm Input: 95 Kilohm
• OUTPUT IMPEDANCE
  • Less than 40 Ohms
• FREQUENCY RESPONSE
  • +/- 0.25 dB from 30 Hz - 63 kHz
  • +/- 1 dB from 12.5 Hz - 120 kHz
  • -3 dBu @ 5 kHz
• MAXIMUM INPUT LEVEL
  • Instrument = +20.5 dBu
• MAXIMUM OUTPUT LEVEL
  • +11.5 dBu output at maximum input level
• TOTAL HARMONIC DISTORTION AND NOISE
  • @ 1 kHz, -20 dBu Input Level, no load : 0.009% Typical (2nd and 3rd Harmonic)
  • @ 1 kHz, +20 dBu Input Level, no load : 0.35% Typical (2nd and 3rd Harmonic)
  • @ 20 Hz, -20 dBu Input Level, no load : 0.9% Typical (2nd and 3rd Harmonic)
• CROSSTALK @ 10 kHz
  • Instrument Input: -115 dB
  • 3.5 mm Input: -108 dB
• POWER REQUIREMENTS
  • Phantom power, 4.5mA @ +48VDC
• WEIGHT
  • 1.5lbs
• DIMENSIONS
  • 7” long x 5”wide x 1.75” high
• MOUNTING OPTION
  • 19” Rack Shelf, 4 hole pattern (bottom of unit) for 6-32 machine screws