Jeff Rowland Coherence One

This preamplifier combined technical innovation with unmatched beauty and ergonomics back in the day and is still considered highly sought after by many audiophiles. Advances in field-effect transistor technology and research into low-level signal recognition and resolution have positioned the Coherence One preamplifier as a standard by which other units will be compared. It is powered by a companion power supply that eliminates the possibility of hum field contamination in the low-level circuitry. In addition, extra care was taken with the overall power supply design, based on the understanding that an audio amplifier is simply a modulated power supply. This unit has a built-in MM/MC phono preamp.

Frequency response: 5Hz to 160kHz Total harmonic distortion: 0.0016% Gain: 20dB (line) Signal to noise ratio: 96dB (line) Channel separation: 110dB (line) Output: 13V (Pre out Max) Dimensions: 445 x 309 x 94mm Weight: 18kg