Rupert Neve Designs RNDI-S Stereo Active Amplifier Transformer Direct Box

Rupert Neve Designs RNDI-S Stereo Active Amplifier Transformer Direct Box

An expanded Two-Channel Version of our Best-Selling RNDI, Providing Massive Tone & Headroom for all of Your Instruments & Stereo Sources

The RNDI-S signature sound is the product of custom Rupert Neve Designs transformers and class-A biased, discrete FET amplifiers. The carefully orchestrated union of these two elements is key to the unique response of the RNDI-S, delivering a powerful and vibrant direct sound capable of reproducing the full harmonic depth of basses, guitars, keyboards, acoustic instruments, professional line-level sources and consumer devices with a 3.5mm jack.

With portable, powerful, larger-than-life tone, the RNDI-S is ready to make your stereo or mono direct sources shine.

The Development of the RNDI

After coming into existence during an experimentation with new transformer designs, the RNDI was fine-tuned over a series of listening tests against the most popular high-end DIs available. It was in these tests where the RNDI always seemed to add another dimension to the sound and bring the instruments to life. The lows felt richer, deeper and fuller, and the highs had outstanding clarity without any added harshness.

Controls & I/O:

2x ¼” Inputs

Hi-Z unbalanced inputs with 2.2M Ohms input impedance.

2x ¼” THRU Jacks

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

3.5MM Input

Stereo unbalanced input with 95 kOhm input impedance. Ch 1 = Tip, Ch 2 = Ring.

Input Select

Selects ¼” Input or 3.5mm Input.

48V Power Leds

Indicates that +48V phantom power is present for each channel from the connected mic preamp(s). Power must be supplied independently to both channels.

Ground Lifts

Isolates the XLR Pin 1 from the instrument input ground.

Output

Transformer-balanced XLR output. Impedance < 40 Ohms. Phantom power to the RNDI-S is supplied through these connections.

Features:

• Custom Rupert Neve Designs transformers for rich, powerful tone
• Exceptional performance with any instrument
• Unrivaled clarity from discrete FET amplifiers
• Drives long lines with minimal loss
• Rugged steel frame built for life on the road
• Powered by dual 48V phantom power
• Excellent phase coherence at all frequencies

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Brand	Rupert Neve Designs
Condition	New

Input Impedance:

• Instrument Setting: 2.2 Meg Ohm
• 3.5 mm Input: 95 Kilohm

Output Impedance:

• Less than 40 Ohms

Frequency Response:

• +/- 0.25 dB from 30 Hz - 63 kHz
• +/- 1 dB from 12.5 Hz - 120 kHz
• -3 dBu @ 5 kHz

Maximum Input Level:

• Instrument: +21 dBu (typical)

Maximum Output Level:

• +11.5 dBu output at maximum input level

Total Harmonic Distortion and Noise:

• @ 1 kHz, -20 dBu Input Level, no load: 0.009% Typical (2nd and 3rd Harmonic)
• @ 1 kHz, +20 dBu Input Level, no load: 0.35% Typical (2nd and 3rd Harmonic)
• @ 20 Hz, -20 dBu Input Level, no load: 0.9% Typical (2nd and 3rd Harmonic)

Crosstalk @ 10 kHz:

• Instrument Input: -115 dB
• 3.5 mm Input: -108 dB

Power Requirements:

• Phantom power, 4.5mA @ +48VDC

Weight:

• 1.5 lbs

Dimensions:

• 7" wide x 5" deep x 1.75" high

Mounting Option:

• 19" Rack Shelf, 4 hole pattern (bottom of unit) for 6-32 machine screws