Rupert Neve Designs RNDI-8 8-Channel Active Direct Box

Legendary tone, unquestionable reliability. Eight channels of the superb-sounding RNDI in one rack space.

With over 25,000 channels shipped since its launch in 2015, the RNDI is firmly established as the direct interface of choice for many of the world’s most discerning musicians and engineers. Its custom transformers and discrete FET input stages deliver a vibrancy and clarity that captures the full harmonic depth of any source, and its unquestionable reliability has led to its adoption by thousands of touring artists.

The RNDI-8 puts eight channels of this beloved circuit into a single rack space, making it the ideal solution for high-end stage rigs, studios, and synth enthusiasts. With the RNDI-8, stunning direct sound doesn’t require extra work – it’s just there.

• Groundbreaking Direct Tone
When class-A, discrete input stages meet Rupert’s custom output transformers, magic happens. The RNDI-8 contains the unique components and design knowledge that make it worthy of the Rupert Neve name.

• Huge Headroom
Capable of handling not only instruments, but sources such as synths, keyboards, drum machines and even pre-recorded material. And with the addition of a -10dB pad, the input headroom soars to +30.5dBu – allowing the RNDI-8 to inject that coveted Rupert Neve Designs tone into a wide variety of sources.

• Rugged Solid Steel Frame
The rugged steel 1U chassis features an industrial-grade powder coating and is built to withstand the severe stresses of life on the road. The included bolt-on rack ears are reversible for multiple mounting options.

• Use With a Variety of Sources
The RNDI-8 has immensely consistent performance across a wide variety of sources due to its 2.2M Ohm discrete FET input stages and high headroom. The RNDI-8 can be used with confidence on guitars, synths, basses, acoustic instruments, keyboards & drum machines. And with the -10dB PAD 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 outputs – below 40 ohms – are capable of driving long lines while maintaining exceptional high frequency performance.

• 1/4′′ THRU Outputs
The THRU outputs can be used to feed amplifier inputs for reinforcement.

• Ground Lift Options
Pin 1 Isolate switches are provided on the rear panel to help fix any problematic grounding, as well as Ground Lift switches on the front panel to isolate each channel’s circuit ground from chassis ground.

• Phantom Powered
Each of the RNDI-8’s eight channels is powered by standard 48V phantom power. Power is indicated by blue LEDs on the front panel, one per channel.

Note: All specifications are typical.

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

• INPUT IMPEDANCE
Instrument Input: 2.2 Megohm
-10dB PAD Engaged: 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 Input: +20.5 dBu (8.2 Volts RMS) Typical
-10 dB PAD Engaged: +30.5 dBu (26 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

• 19” RACK MOUNTING OPTION
1RU reversible bolt-on rack ears (included)

• UNIT DIMENSIONS
1RU: 19” W x 6” D x 1.75” H
(48.3 cm W x 15.2 cm D x 4.5 cm H)

• UNIT WEIGHT
7 lbs. (3.2 kg)

• SHIPPING DIMENSIONS
24” W x 13” D x 4” H
(61 cm W x 33 cm D x 10.2 cm H)

• SHIPPING WEIGHT
9 lbs. (4.1 kg)