Rupert Neve Designs
Rupert Neve Designs RNDI-8
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Rupert Neve Designs RNDI-8 – 8-channel 1U active transformer direct interface, providing instrument direct injection for electric guitar, bass, synthesizer, keyboard, piezo pickup, or any other instrument-level source. Features eight independent channels of the RNDI circuit in a single rack space, utilizing custom output transformers and discrete class-A FET input stages for outstanding sonic performance. The unit offers a frequency response from below 5Hz to beyond 90kHz, with high input headroom up to +20.5 dBu (or +30.5 dBu with the -10dB pad engaged), and low impedance transformer-coupled outputs for driving long lines with minimal loss. Rugged steel chassis designed for lifetime stage and studio use, with reversible bolt-on rack ears for mounting options.
RNDI-8 offers unrivaled clarity from discrete FET amplifiers, drives long lines with minimal loss, provides excellent phase coherence at all frequencies. Powered by +48V phantom power, with two ground lift options: front panel ground lift isolates circuit ground from chassis ground, and rear panel Pin 1 Isolate switches for standard DI. 1/4" THRU outputs for passing the input signal to an amplifier.
As a pro tool, RNDI-8 blends analog character with precision, ready for professional recordings without compromise.
MAIN FEATURES
- Eight channels of RNDI Active Transformer Direct Interface in one rack space
- Custom-designed output transformers for musical harmonics and dimension, with low impedance outputs (<40Ω) for driving long lines
- Class-A, discrete FET input stages powered by 48V phantom power, with a high input impedance of 2.2M Ohms
- High headroom handling up to +20.5 dBu, extendable to +30.5 dBu with the -10dB pad
- Two ground lift options: front panel ground lift isolates circuit ground from chassis ground, rear panel Pin 1 Isolate switches for standard DI
- 1/4" THRU outputs for passing the input signal to an amplifier
- Rugged solid steel 1U chassis with industrial-grade powder coating, built for road and studio use
- Consistent performance across a variety of sources including guitars, synths, basses, acoustic instruments, keyboards, and drum machines
TECHNICAL SPECIFICATIONS
- 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 dB 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)
- Total Harmonic Distortion + Noise @ 1 kHz, -20 dBu input level: 0.015% Typical (2nd and 3rd Harmonic)
- Total Harmonic Distortion + Noise @ 20 Hz, -20 dBu input level: 0.75% Typical (2nd and 3rd Harmonic)
- Power Requirements: 4.5mA Per Channel @ +48VDC
- Mounting Options: 19” Rack Shelf Mounting Option, 4 hole pattern (bottom of unit) for 6-32 machine screws
- Product Dimensions (D x W x H): 7” (17.78 cm) x 5” (12.7 cm) x 1.75” (4.45 cm)
- Shipping Dimensions (L x W x H): 10” (25.4 cm) x 8” (20.32 cm) x 3” (7.62 cm)
- Shipping Weight: 3 lbs (1.36 kg)
- Included: RNDI-8, manual
- Product Code: RNDI-8
