RNDI-8

The RNDI-8 consists of eight independent channels of RNDI Active Transformer Direct Interface in a single rack space, providing instrument direct injection for electric guitar & bass, synthesizer, keyboard, piezo pickup, or any other instrument-level source. The discrete, class-A circuit topology is built around Mr. Rupert Neve’s custom transformers, resulting in outstanding sonic performance and supremely natural sound from 5Hz all the way out to well beyond 90kHz. Each channel can handle input levels up to +21dBu (+31dBu with the pad engaged), thelow impedance transformer-coupled output drives long lines with minimal loss, and the rugged chassis’ steel construction is designed for a lifetime of stage and studio use.

Transformer + Discrete FET: The Best of Both Worlds
The RNDI-8’s signature sound stems from the custom-designed transformers and class-A, discrete FET input amplifiers. The carefully designed union of these two elements is key to the RNDI-8’s unique accuracy, tone, and response. The Eight Custom Transformers The RNDI-8’s custom-wound output transformers provide isolation while adding musical harmonics and dimension to the sound. The low impedance, transformer-balanced outputs excel at driving long cable
runs, and the performance is consistent regardless of the connected equipment. This isimportant for both live and studio environments where the unamplified signal may travel 100ft or more before hitting an amplifier.

The Class-A, Discrete FET Input Amplifiers
The class-A & discrete FET input amplifiersin the RNDI-8 are powered by 48V phantomand create a high impedance input of over 2M Ohms, ensuring consistent performance with a wide variety of instruments. The class-A design eliminates crossover distortion that can otherwise be added to the signal and introduce unwanted upper-order odd harmonics. With the RNDI-8, the harmonic content is derived from the octave (2nd order) and fifth above octave (3rd order) relative to  the fundamental. These musically relevant harmonics, present in subtle amounts, enhance the richness of the original signal and provide a distinctly musical response. Furthermore, the discrete aspect of the RNDI-8’s design means there are no ICs or digital components to potentially cause negative effects on the tone. Giant Headroom,Wide Bandwidth The RNDI-8 has a uniquely wide bandwidth with a frequency response stretching from 5Hz all the way past 90kHz.However,measurements are only part of the equation: couple this extended bandwidth with the output transformer’s harmonic enhancement andan absolutely thunderous low-end emerges, adding an unparalleled feeling of depth. All this happens without compromising any of the midrange richness or top-end sparkle that defines your instrument. Maximum input level is a massive +21dBu, making the RNDI-8 capable of handling not only instruments but also professional line-level sources like interfaces and drum machines. And with the addition of a-
10dB pad, that number soars to +31dBu–more than enough for even the highest-output DJ mixers. This makes the RNDI-8 incredibly versatile, enhancing the sound of nearly any connected instrument or source.

Two Distinct Ground Lift Options
Most direct interfaces include a ground lift switch at the output,and the RNDI-8 includes this standard DI ‘lifting’ option via eight individual ‘Pin 1 Isolate’ switches on the rear panel. Engaging this button will usually eliminate common sources of hum in the signal path. However, the RNDI-8