Rupert Neve Designs RNDI Active Transformer Direct Interface

The RNDI contains a custom Rupert Neve-designed output transformer and class-A, discrete FET input stage. This carefully designed combination is the key to the RNDI’s unparalleled performance, delivering a powerful and vibrant direct sound that captures the full harmonic depth of basses, guitars, acoustic instruments, and even pre-recorded material.

With portable, powerful, larger-than-life tone for a variety of instrument and amplifier signals, the RNDI is truly the first stand-alone DI worthy of the Rupert Neve name.

• Groundbreaking Direct Tone
When class-A, discrete amplifiers meet Rupert’s custom transformers, good things happen to your tone. The RNDI is imbued with the unique components and design knowledge that makes it worthy of the Rupert Neve name.

• Huge Headroom
The high input headroom of +20.5 dBu (typical) is capable of handling a wide range of sources – and in speaker mode, the RNDI can handle the full output of a 1000-watt power amplifier (92 Vrms or 266Vp-p).

Rugged Solid Steel Frame
• The rugged steel chassis features an industrial-grade powder coating, and is built to withstand the severe stresses of life on the road.

• Use a Variety of Sources
The RNDI has immensely consistent performance across a wide variety of sources due to its 2.2M Ohm discrete FET input stage and high headroom. The RNDI can be used with confidence on guitars, synths, basses, acoustic instruments, keyboards & drum machines. And in speaker mode the input headroom increases even further, providing an easy way to inject the pleasing harmonic content of the RNDI into literally any source.

• Drive Longer Lines
The low impedance transformer-coupled output – below 40 ohms – is capable of driving long lines while maintaining exceptional high frequency performance.

• 1/4″ THRU Output
In instrument mode the THRU output can feed the amplifier input for reinforcement. In speaker mode, the THRU is used to feed the amplified signal to the speaker.

• Ground Lift
A ground lift switch is provided on the back to help fix any problematic grounding.

• Phantom Powered
The RNDI is powered by standard 48V phantom power. Power is indicated by a blue LED on the front panel.

Note: All specifications are typical.

• NOISE (22 Hz - 22 kHz, Un-weighted)
Better than -110 dBV

• INPUT IMPEDANCE
Instrument Mode: 2.2 Megohm
Speaker Mode: 200 Kilohm

• OUTPUT IMPEDANCE
Less than 40 Ohm

• FREQUENCY RESPONSE
+/- 0.25 dB from 28 Hz – 60 kHz
+/- 1 dB from 14 Hz – 90 kHz
-3 dBu below 5 Hz

• MAXIMUM INPUT LEVEL
Instrument Mode: +20.5 dBu (8.2 Volts RMS) Typical
Speaker Mode: +41 dBu (87 Volts RMS) Typical

• MAXIMUM OUTPUT LEVEL
+11.5 dBu Typical

• TOTAL HARMONIC DISTORTION + NOISE
@ 1 kHz, +20 dBu input level: 0.25% Typical (2nd and 3rd Harmonic)
@ 1 kHz, -20 dBu input level: 0.015% Typical (2nd and 3rd Harmonic)
@ 20 Hz, -20 dBu input level: 0.75% Typical (2nd and 3rd Harmonic)

• POWER REQUIREMENTS
4.5mA Per Channel @ +48VDC

• UNIT DIMENSIONS
4” W x 6.25” D x 1.75” H
(10.2 cm W x 15.9 cm D x 4.5 cm H)

• UNIT WEIGHT
1 lb. (0.45 kg)

• SHIPPING DIMENSIONS
10” W x 8” D x 3” H
(25.4 cm W x 20.3 cm D x 7.6 cm H)

• SHIPPING WEIGHT
3 lbs. (1.4 kg)