Product Catalogue > Amplifiers > Pre-Amplifiers

KingRex PREference

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The second-generation pre-amplifier from KingRex is a logical extension of the success story of the award-winning preamp. Built around a high quality Op-Amp and the Diamond Buffer, so highly praised for its musicality, a current booster has been added to the final output of the amplifier stage to enhance drive-ability. A DC Servo circuit has also been implemented to minimise signal loss due to coupling capacitors.

The result is accurate and perfectly balanced signal amplification, free from colouration, yet highly adaptable.

A separate high performance power supply unit further guarantees interference-free performance and a jet-black noise floor. Panasonic FM electrolytic capacitors stand guard along critical paths, dedicated to extremely low ESR. Both the preamp and the PSU (power supply unit) are housed in all-aluminium chassis.

A special feature is the sliding door on top of the preamp opening up to phono stage settings: MC/MM with high/low gain and six preset resistive loads.

Boasting impressive full frequency range with THD as low as 0.0004% and dynamic range better than 108dB, the PREference will doubtless prove to be the pre-amplifier of choice for discerning audiophiles.

Reviews
6moons - http://6moons.com/audioreviews/kingrex6/preference.html
TNT-Audio - http://www.tnt-audio.com/ampli/kingrex_preference_e.html 

Specifications

• Gain: 6, 12, 128dB (switchable)
• Frequency Response: ±0.01db (from 20Hz–20kHz) ±0.3dB (from 0Hz-80kHz)
• Signal-to-Noise Ratio: greater then 126dB
• THD+N Ratio: 0.0004%
• THD+N Level: less then -16dB(A-weighing 20Hz–20kHz)
• Crosstalk: -110dB (at 1kHz) and -91dB (at 10kHz)
• IMD: 0.0011%

Features

• Signal-to-Noise Ratio: 115dB (MM-Low gain), 106dB (MC-Low gain)
• Crosstalk (at 1kHz): -94dB (MM-Low gain), -79dB (MC Low-gain)
• Cross talk (at 10kHz): -100db (MM Low gain), -86dB (MC Low gain)
• Gain (at 1kHz): 24dB (MM-Low gain),
  43dB (MC-Low gain),
  High gain = +20dB
• Max Input Level: 19mV (MM), 6.6mV (MC), High-gain), 218mV (MM), 72mV (MC) (Low Gain)
• Output Impedance: <100 Ohms
• Input Impedance: 100 Ohms, 220 Ohms, 47 kOhms (switchable)
• Input Capacitance: 0 P, 100 P (switchable)

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