RUPERT NEVE DESIGNS RNDI Active Transformer Direct Interface Outboard

CONTROLS & I/O

¼” INPUT
Hi-Z unbalanced input:
2.2M Ohms (Instrument)
200 kOhms (Speaker)

¼” THRU
Parallel ¼” port used to send signal to an amp or speaker.

SPEAKER / INSTRUMENT INPUT LEVEL
Selects Speaker or Instrument level.
Max input: +21dBu Instrument, +41.5dBu Speaker

48V POWER LED
Indicates that +48V phantom power is present from the connected mic preamp (required to power the RNDI).

GROUND LIFT
Isolates the XLR Pin 1 from the instrument input ground.

OUTPUT
Transformer-balanced XLR output. Impedance less than 40 Ohms. Phantom power to the RNDI is supplied through this connection.

FEATURES

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 +21dBu (typical) is capable of handling professional, line level sources without a pad – 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.

Takes All Kinds
The RNDI has immensely consistent performance across a wide variety of sources due to its 2M Ohm discrete FET input and high headroom. You can confidently use the RNDI with basses, guitars, acoustic instruments, keyboards, and even professional line level devices. In instrument mode, you can even connect a professional line level interface output to “Re-Preamp” a previously recorded source.

Drive Longer Lines
The low impedance transformer coupled output – below 50 ohms – is capable of driving long lines with unrivaled 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.

Superb Phase Coherence
Phase coherence is excellent at all frequencies, which keeps the sound well-balanced and natural, and is especially vital when blending the direct signal with a microphone capture of the same source.

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.