850P Preamplifier
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Starting at :$ 32,000 USD

Available finishes are dependant on location.
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The ultimate analog preamplifier

“It’s the most transparent preamp – or audio component of any sort – that I’ve heard.”
– Brian Damkroger, Stereophile

Our most advanced preamplifier to date

“This is a rare component in the way it disappears, revealing nothing but the music carried through it. I’ve yet to hear one that reveals more music.”
– Jeff Dorgay, TONEAudio

Sophisticated two chassis design

The audio circuits are isolated within a second box for better signal accuracy.

Suspension for complete microphonic annihilation

giving incredibly lifelike natural sound.

PreamplifiersSpecifications

Product features
In the box
User manual
Comparison chart
Design features
  • 2-chassis design with 1 chassis housing the power supply, digital controller circuitry, software processing & the LED display. The other chassis contains ONLY audio circuitry.

  • Power supply voltage regulation includes i 2 DCf (Independent Inductive DC Filtering); 1 inductor for each and every IC in the audio circuit’s signal path – 40 stages in all.

  • Gain offset adjustment of ±10dB for each line input.

  • Each line input is fully configurable to be “home theater ready”, whereby the 850P’s volume control is bypassed.

Specifications
  • Number of inputs - XLR / RCA
    3 pairs / 5 pairs
  • Input Sensitivity
    200mV - 4.0V RMS
  • Input Impedance
    11,000Ω
  • Gain
    9dB
  • Number of Outputs - XLR / RCA
    2 pairs / 2 pairs (fixed + variable)
  • Signal-to-noise Ratio (20Hz-20kHz)
    130dB @ full output
  • Frequency response (full range)
    5Hz - 100kHz ±0.1dB
  • Crosstalk @ 1kHz
    -130dB
  • Output impedance
    50Ω
  • THD (20Hz - 20kHz)
    0.0005%
  • Intermodulation distortion
    0.0001%
  • Shipping weight
    151 lbs / 67 Kgs
  • Dimensions - each chassis (w x h x d)
    18.75 x 4.0 x 16.5 in
  • 47.6 x 10.2 x 41.9 cm