Stereo Active Transformer DI


    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.

    • 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
    Tech Specs

    Dimensions (W x D x H):   7”x 5” x 1.75”

    Noise (Measured Output, Un-weighted, Source Impedance 150 ohms, 22Hz – 22kHz ) Better than -110dBV

    Input Impedance 

    Instrument Input : 2.2 Megohm 

    3.5mm Input : 95 Kilohm 

    Output Impedance   Less than 40 Ohms 

    Frequency Response :

    30Hz-63KHz:  +/- 0.25 dB 

    12Hz-120Khz.    +/- 1dB

    Maximum Input Level : +20.5 dBu Typical 

    Maximum Output Level: +11.5 dBu Typical 

    Total Harmonic Distorion + 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 Powered :  4.5mA Per Channel @ 48VDC 

    19” Rack Shelf Mounting Option :   4 hole pattern (bottom of unit) for 6-32 machine screws 


    RNDI-S Manual