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

Active + Passive: The Best of Both Worlds

The RNDI-S and RNDI’s signature sound is the product both 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 their unique response.

THE TRANSFORMERS

The custom transformers provide superior passive isolation while adding musical harmonics and dimension to the sound. The low impedance, transformer-balanced output excels at driving long cable runs, and performance is immensely consistent regardless of the connected equipment. This is very important for both live and studio environments where the unamplified signal may travel almost 100ft before hitting an amplifier. In other designs, these high-capacitance lines cause major reductions in high frequencies – not so with the RNDI.

THE CLASS-A, DISCRETE FET AMPLIFIERS

The class-A & discrete FET amplifier in the RNDI is powered by 48V phantom, and creates a very high impedance input of 2M Ohms that ensures consistent performance with a wide variety of instruments. The class-A design ensures that zero crossover distortion is added to the signal, which can add upper-order odd harmonics that are musically dissonant in nature. With the RNDI, the overwhelming majority of harmonic content is 2nd order (octave) with some 3rd order present (fifth above octave). These musically relevant harmonics, present in subtle amounts, actually add to the richness of the original signal. And the discrete aspect of the RNDI design means there are no ICs or digital components that can have negative effects on the tone.

Highlights

• For stereo keyboards, guitars, basses, and piezo-equipped instruments, there are two channels of huge, forceful direct tone
• 3.5mm stereo input jack for convenient phone, tablet, and other consumer device connections
• Custom transformers provide strong bottom end and sweet highs while maintaining clarity
• Flat frequency response within the audible range of 20Hz-20KHz
• Response time is extended below 10Hz and over 100KHz
• Complete circuit isolation is provided by transformers and active circuits
• Excellent, consistent results are provided by extremely low output impedance and phase shift
• Dual 1/4″ input and output jacks; gold-plated XLR output; 48V Phantom power
• A tough steel chassis designed to survive life on the road

Specifications

• Type:Active
• Channels:Stereo, Dual Mono
• Ground Lift:Yes
• Inputs:2 x 1/4″ TRS (instrument), 1 x 1/8″ TRS (stereo)
• Outputs:2 x 1/4″ (thru), 2 x XLR
• Power Source:48V Phantom Power
• Height:1.75″
• Depth:5″
• Width:7″
• Manufacturer Part Number:RNDI-S

Condition:Excellent. Light wear typical of a gently used Item. Light surface scratches, scuffs, etc.

Please feel free to reach out to our knowledgeable sales staff with any additional questions!