The RNDI-8 is designed to directly accept instrument-level sources, including electric guitars and basses, synthesizers, keyboards, and piezo pickups. Its Class-A discrete circuitry, built around Rupert Neve's custom transformers, delivers exceptionally natural sound from 5 Hz to over 90 kHz. Each channel handles input levels up to +21 dBu (+31 dBu with pad engaged), and its low-impedance, transformer-coupled outputs minimize signal loss between devices, even over long cable runs. 1U size, 8 channels: Active, Transformer, DI. Listen now (external site). Features: The RNDI-8 is designed to directly accept instrument-level sources, including electric guitars and basses, synthesizers, keyboards, and piezo pickups. Its Class-A discrete circuitry, built around Rupert Neve's custom transformers, delivers exceptionally natural sound from 5 Hz to over 90 kHz. Each channel handles input levels up to +21 dBu (+31 dBu with the pad engaged), and its low-impedance, transformer-coupled outputs minimize signal loss between devices, even over long cable runs. Since its release in 2015, the RNDI has shipped over 25,000 channels, firmly establishing itself as the DI of choice for discerning musicians and engineers worldwide. Its custom transformer and discrete FET amplifier delivers the power and clarity to capture every harmonic depth of any source, and its unwavering reliability has earned it the trust of countless touring artists. The RNDI-8 packs eight channels of this beloved circuitry into a 1U rackmount enclosure, making it the ideal solution for stage rigs, studios, and synth enthusiasts alike. The RNDI-8 delivers stunning, direct sound instantly. Transformer + Discrete FET: The Best of Both Worlds. The RNDI-8's signature sound comes from its custom transformer and Class-A discrete FET input amplifier. This careful combination is key to the RNDI-8's unique precision, tone, and response. 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 output ensures consistent performance over long distances, which is especially important in live and studio environments where the signal path before the amplifier can be over 100 feet. Class-A Discrete FET Input Amplifier. The RNDI-8's Class-A discrete FET input amplifier provides a high-impedance input of over 2 MΩ with 48V phantom power, ensuring consistent performance with a wide range of instruments. The Class-A design also eliminates any additional crossover distortion. The RNDI-8 includes second (an octave above) and third (a fifth above) harmonics relative to the fundamental. These subtle musical overtones enhance the richness of the original sound, resulting in a truly distinctive character. Additionally, the RNDI-8's discrete design eliminates the use of ICs or digital components, completely eliminating any tonal impairing features. Massive Headroom and Wide Bandwidth: The RNDI-8's frequency response spans an unparalleled 5 Hz to 90 kHz. This wide bandwidth, combined with the harmonic enhancement provided by the output transformer, delivers thunderous low-end and impressive depth, without compromising the inherent character of your instrument, such as rich midrange and brilliant top-end. With a maximum input level of +21 dBu (typical), it's compatible with not only instruments but also professional line-level sources like audio interfaces and drum machines. With the -10 dB pad engaged, the output becomes +31 dBu, more than enough to handle even the most powerful DJ mixers. The RNDI-8 is a versatile model that can be connected to any instrument or source. Two Ground Lift Options: The RNDI-8 features eight "PIN 1 ISOLATE" switches on the rear panel, providing what is commonly known as a DI "lift" option. Pressing this button typically removes major sources of hum in the signal path. In addition, the RNDI-8 features eight ground lift buttons on the front panel, isolating each channel's circuit ground from chassis ground, providing a useful option for eliminating unwanted ground hum. Input ImpedanceInstrument Input: 2.2MΩWith -10 dB Pad: 200 kΩOutput Impedance40 Ω or lessMaximum Input Level @ 1 kHzInstrument Input: +21 dBuWith -10 dB Pad: +31 dBuMaximum Output Level @ 1 kHz+11 dBuFrequency Response (30' output cable, 10 kΩ equivalent load):28 Hz to 50 kHz (±0.25 dB), 14 Hz to 90 kHz (±1 dB), 5 Hz (-3 dB)Noise (measured at Output, Un-weighted BW 22 Hz to 22 kHz, 150 Ω):-110 dBV or lessTHD+N (Total Harmonic Distortion):0.35% Typical @ 1 kHz, +20 dBu Input (2nd and 3rd Harmonics):0.009% Typical @ 1 kHz, -20 dBu input (2nd and 3rd harmonics) 0.9% Typical @ 20 Hz, -20 dBu input (2nd and 3rd harmonics) Power Supply 4.5 mA @ +48V DC phantom power per channel 19" Rack mount Optional 1U size Reversible Bolt-on Rack ears Other Dimensions: 483 x 206 x 45mm (W x D x H) Weight: 3.2 kg ■ Product Code: 4530027360321