classic console modules like the 1073, 1064, 1081 & 2254, thoughtfully advanced and refined for the 21st century studio. The Shelford Channel is built around Rupert Neve’s first new transformer-gain, class-A microphone preamplifier in over 40 years, the “best-of-the-classics” inductor EQ section from the Shelford 5052, a tone-packed Diode bridge compressor, the analog power of variable Silk saturation, a new dual-tap transformer output stage for maintaining headroom or allowing the full driving of the Channel without clipping standard converters, and twice the operating voltage of vintage designs.
With richly-colored tonal options for making bold statements with your music, and precisely-engineered detented controls for recall, the vintage-inspired Shelford Channel maintains the soul of Rupert’s classic designs with new levels of versatility, delivering what can only be described as the combined essence of fifty years of Rupert Neve’s designs.
Like Rupert’s designs from his time in Little Shelford , the Shelford Channel’s preamplifier uses a directly-coupled transformer input with gain provided by the custom transformer itself – a first in over 40 years for Rupert Neve. This new custom-designed input transformer, along with its careful integration with the surrounding circuitry, is critical to the Channel’s bold and instantly recognizable character.
With this classic topology, the input transformer design is extraordinarily challenging, and the RN4012 transformer utilized in the Channel went through many generations before Mr. Rupert Neve was satisfied. This transformer provides the first 15dB of gain, with the rest of the 72dB of gain provided by the discrete, class-A amplifier blocks controlled by a stepped attenuator and precision trim pot. Whereas Rupert’s more modern designs (e.g. the Portico Series) utilize a combination of TLAs (Transformer-Like Amplifiers) followed by an input transformer for pristine low & high frequency detail and galvanic isolation (see comparing input topologies notes), the Shelford Channel’s design directly couples the input transformer to the microphone line. When this new transformer is combined with its surrounding class-A input amplifiers, the result is the unmistakably smooth high and low frequencies of the most famous vintage modules in the world, yet with incredibly low noise and superior isolation. The mic pre section also includes a sweepable 20-250Hz high-pass filter, Mic / Line selection, 48V phantom power, and polarity reverse.
- Transformer gain mic input
- Direct input
- 48V phantom power
- Inductor EQ with highpass filter, and 3 bands
- Diode bridge compressor with side chain input
- Silk texture on the output transformer
- VU meter which displays either output level or gain reduction
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- Input Impedance: 2200 Ohms
- Maximum Input: +21.5dBu from 150Hz to 22kHz, +8dBu 20Hz to 22kHz
- Noise: Main Out @ unity gain -100.9dBu
- Frequency Response: +/-0.25dB from 17Hz to 45kHz
- High Pass Filter: Continuously variable swept frequency from 20Hz to 250Hz. Slope: 12dB/Octave
- EQ Noise: Un-weighted, 22Hz-22kHz, -92dBu
- Diode Bridge Compressor Noise (BW 22Hz – 22kHz): 0 dB Makeup Gain: -84.5 dBu, +20 dB Makeup Gain: -64.2 dBu