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GRAHAM SLEE - Revelation Phono Preamp

Phono Preamps

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Graham Slee Revelation Phono Preamp

Breathe New Life into Your Record Collection

The phono-stage preamp provides the correct EQ for virtually every phonograph record ever made, with 7 equalization networks which combine using three 3-way front panel switches to equalize up to 15 different recording curves - 12 of these settings will equalize known record label recording curves including the modern-day RIAA -  the other 3 are for experimentation. 

The Revelation uses many similarly selected components from branded specialist high-quality audio component manufacturers as the Jazz Club. These components are selected on real technical merit, and the difference they make, on listening, is obvious.

The Revelation differs from the Jazz Club phono stage in its internal grounding method as well as its equalization network impedance. The grounding method used in the Revelation has been further optimized to lower the noise floor even more, allowing the Revelation to extract even more subtle detail and background cues, taking the listening experience another step closer to reality, whatever the music's genre. The Revelation's EQ network impedance have been raised a bit to further exploit the ultra-high slew rate of its amplifier stage. This combination of improvements make the Revelation phono stage, and the Reflex on which it is based, the ultimate in "live sounding" phono stages.

Like all Graham Slee wideband designs, best performance is obtained by the unit being powered continuously, and a period of "burn-in" (approximately 3 weeks) should be observed for its components to fully form and stabilize. To ensure proper continuous correct operation, the Revelation phono stage is supplied with the IEC approved PSU1 in-line power supply unit.

A mono switch is included on the rear panel to conveniently use a stereo pick-up for mono work. For exacting mono work a mono pick-up should be used in stereo mode and the unused input shorted. It is not advisable to convert stereo recordings to mono using a mono switch as the summing function puts emphasis on center channel signals.

Revelation M
Input sensitivity range: 2mV to 10mV
Output range (for above inputs): 224mV to 1120mV
Maximum input: 46mV rms
Maximum output: 5.2V rms
Gain: 41dB (112) at 1kHz
Input impedance: 47k Ohms plus 100pF (200pF approx. with arm cable capacitance)
Output impedance (driving impedance): 1k Ohm (will drive 10k Ohms and above)
Noise at output: -68dB CCIR Q-pk; EIN: -109dB
Distortion: typically 0.01%
RIAA accuracy: <0.3dB
Frequency response: 20Hz - 200kHz ("flat", corrected to RIAA)
Channel balance: 0.2dB
Channel separation: 60dB
Dimensions: 2" x 5" x 6.5"

Revelation C
Input range: 0.2mV to 1.0mV
Output (for input range): 252mV to 1,260mV (1.26V)
Maximum input: 3.9mV rms
Maximum output: 4.914V rms
Gain: 62dB (1,260) at 1kHz
Input impedance: 100 Ohms
Output (driving/source) impedance: 1k Ohm
Recommended load impedance: 10k Ohm or greater
Noise at output: -62dB CCIR Q-pk
Equivalent input noise (EIN): -124dB
Distortion: 0.02%
RIAA accuracy: < 0.5dB
Frequency response: 20Hz - 200kHz (flat, corrected to RIAA)
Channel balance: 0.2dB
Channel separation: 64dB

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