Rupert Neve Designs RNDI-8 Active DI

From the classic RNDI to the RNDI-8: the same signature, designed for multi-source setups

Since its launch, the RNDI DI has established itself as a benchmark whenever capturing an instrument "direct" with a sense of depth and precision that remains musical. The RNDI-8 carries this sonic DNA and adapts it to modern configurations: instead of a single channel, you get eight independent channels combined into a single rack space (1U). The innovation is here: retaining the character and level handling of the RNDI circuit while gaining a much faster workflow for stages, live-oriented studios, or synthesizer and keyboard setups.
Each channel remains autonomous, allowing you to equip a high-end stage rack, a production studio, or a recording control room without multiplying boxes, power supplies, and potential failure points. The result: cleaner cabling, faster setup, and consistent sound across all sources.

Who the RNDI-8 is for and in which applications it makes a difference

The RNDI-8 is aimed at musicians and sound engineers seeking a premium multi-channel DI without compromise: touring guitarists and bassists (clean splits to console and amp), keyboardists and synth enthusiasts (managing multiple stereo sources), studios recording live takes, or fixed installations (rehearsal spaces, houses of worship, TV studios). It excels whenever the priority is to obtain a stable, full, and immediately usable direct signal without needing to "fix" the source during mixing.
Thanks to its transformer-coupled output and low output impedance, the RNDI-8 is particularly comfortable when running long cable lines to a console or patch bay with minimal loss. It is also a valuable ally for taming ground issues: each channel features dedicated controls to reduce hum and interference, saving considerable time in stage contexts.

Key features: headroom, transformers, and noise control, channel by channel

Discrete Class A circuit and custom transformers

The discrete Class A topology combined with Rupert Neve Custom transformers aims for a sound that is both precise and organic. The benefit is not just in measurements but in how the output transformer adds harmonic density and weight in the low end while preserving midrange richness and attack clarity.

High headroom and pad for "hot" sources

The RNDI-8 accepts typical input levels up to +21 dBu and can handle up to +31 dBu with the pad engaged. This margin is crucial with certain synthesizers, keyboards, or instrument preamps with high output levels: it limits the risk of unwanted clipping while maintaining comfortable dynamics. The -10 dB pad per channel is there to secure the most energetic passages without changing your playing style.

Phantom power and isolation for a clean signal

Each channel can be powered with 48V phantom power, simplifying integration on the console side and avoiding external power supplies. For complex environments (stage, lighting, backline, multiple power sources), the Ground Lift and isolated Pin 1 available per channel help eliminate hum and ground loops while maintaining a stable output level.

Technical specifications

Number of channels	8	Category	sound reinforcement accessory
Rackable	Yes	Type	Box

Frequency response	5 Hz to 90 kHz	Thru output	6.3 mm Jack
Maximum input level	+21 dBu	Output	XLR
Maximum input level with pad engaged	+31 dBu	Format	19-inch / 1U
Pad	-10 dB	Dimensions	483 x 206 x 45 mm
Phantom power	48V per channel	Weight	4.1 kg
Input	6.3 mm Jack