Rupert Neve Designs RNDI-S Stereo Active Transformer Direct Box

The RNDI-S’ signature sound is the product of custom Rupert Neve Designs transformers and class-A biased, discrete FET amplifiers. The carefully orchestrated union of these two elements is key to the unique response of the RNDI-S, delivering a powerful and vibrant direct sound capable of reproducing the full harmonic depth of basses, guitars, keyboards, acoustic instruments, professional line-level sources and consumer devices with a 3.5mm jack. With portable, powerful, larger-than-life tone, the RNDI-S is ready to make your stereo or mono direct sources shine.

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

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