KingRex PREference PreAmp

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 preamp of choice for discerning audiophiles.

Please note that the phono stage is not included in the list price, but is factory installed at an optional extra cost of £195.

Specifications:

• Audio Precision Data @14db gain (PDF) >
• Gain: 6, 12, 18db switchable
• Frequency Response: ±0.01db (from 20Hz–20kHz)
  ±0.3dB (from 0Hz-80kHz)
• Signal to noise ratio: Better than 126dB
• THD+N ratio: 0.0004%
• THD+N Level:
  better than -16dB
  (A-weighing 20Hz–20kHz)
• Crosstalk: -110dB (at 1kHz) | -91dB (at 10kHz)
• IMD: 0.0011%
• Phonostage specifications:
• 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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