Active Transformer Direct Interface


RNDI Active Transformer Direct Interface

The RNDI’s signature sound is the product of new custom Rupert Neve-designed transformers and class-A biased, discrete FET amplifiers. The carefully orchestrated union of these two elements is key to the RNDI’s unique response, delivering a powerful and vibrant direct sound capable of reproducing the full harmonic depth of basses, guitars, acoustic instruments, and professional line level sources. With portable, powerful, larger-than-life tone for your instrument and amplifier signals, the RNDI is truly the first standalone DI worthy of the Rupert Neve name.


Measured Output, un-weighted, 22Hz-22kHz, source impedance 150 Ohms to 10K Ohms
Better than -110dBV

Input Impedance
Instrument Setting: 2.2 Meg Ohm
Speaker Setting: 200k Ohm

Output Impedance
Less than 40 Ohms

Frequency Response
+/- 0.25dB from 25Hz – 44kHz
+/- 1dB from 12.5Hz – 63kHz
-3dBu @ 92kHz

Maximum Input Level
Instrument = +21dBu Typical Speaker = +41.5dBu, 92 Vrms (266Vp-p)

Maximum Output Level
+11.5dBu output at maximum input level

Total Harmonic Distortion plus Noise
@ 1kHz, +20dBu input level:
0.25% Typical (2nd and 3rd harmonic)

@ 1kHz, -20dBu input level :
0.015% Typical (2nd and 3rd harmonic)

@ 20Hz, -20dBu input level :
0.75% Typical (2nd and 3rd harmonic)

Power Requirements
Phantom power, 4.5mA @ +48VDC


6.25” long x 4”wide x 1.5” high

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