Rupert Neve 551 Shelford Inductor EQ
The Rupert Neve 551 Shelford Inductor EQ is the only equalizer for the 500 Series designed by Rupert Neve himself.
With 3 bands of EQ inspired by Mr. Neve’s most award-winning vintage designs.
Neve’s most award-winning vintage designs along with custom-wound inductors, transformers and Class A gain blocks, the 551 brings Rupert Neve’s signature: delicious and rich bass combined with the silky smooth top end of Rupert’s classics to the 500 Series format. 
Specifications
Equalizer Bypassed Noise: Measured at Main Output, un-weighted, 22Hz-22kHz, source impedance 40 Ohms balanced.
Better than -102dBV Frequency Response Main output, no load +/- 0.1dBu from 20Hz to 31.5kHz -1dB @ 120kHz Maximum Output Level 23.25dBu Total Harmonic Distortion and Noise @ 1kHz, +20dBu output level, no load.
Better than 0.0025% @ 20Hz, +20dBu output level, no load.
0.13% Typical (2nd and 3rd harmonic) High Pass Filter: -2.7dB @ 80Hz Slope: 12dB/Octave Equalizer Engaged Noise: Measured at Main Output, un-weighted, 22Hz-22kHz, source impedance 40 Ohms balanced.
Better than -94dBV Frequency Response Main output, no load +/- 0.25dBu from 20Hz to 45kHz -2dB @ 120kHz Maximum Output Level 23dBu Total Harmonic Distortion and Noise @ 1kHz, +20dBu output level, no load.
Better than 0.009% @ 20Hz, +20dBu output level, no load.
0.13% Typical (2nd and 3rd harmonic) Power Requirements 120mA on +16VDC 110ma on -16VDC
