Audio Research PH9

The PH9 phono preamplifier is a great pairing with most cartridge and turntable combinations.


A trio of 6H30 vacuum tubes are at the core of a simple and clear signal path to provide the most transparent preamplification possible.


Five different impedance settings allow for cartridge loading, which can be changed on the fly with the included metal remote. Cartridge impedance, tube hours, auto shutdown, and other features are included in the menu system.


The PH9 forms an integral part of our reference system and sits alongside the Audio Research Ref 6 preamp and 160M Monoblocks that power the Sonus Faber Aida 2s.


We currently run the exceptional Acoustic Signature Ascona Mk3 Turntable with this system.

Availability: In stock

$16,995.00

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Product Description

Details

Frequency Response: ± .2dB of RIAA, 10Hz to 60kHz; 3dB points below 0.3Hz and above 400kHz.
Distortion: Less than .005% at .50V RMS 1kHz output.
Gain: 58dB at 1kHz (MC & MM compatible).
Push Buttons: Power, Mono, Load, Mute.
Input Impedance: Selectable 47K, 1000, 500, 200, or 100 ohms with 200pF Unbalanced.
Output Impedance: 200 ohms Unbalanced. Recommended load 50K-100K ohms and 100pF. (10K ohms minimum and 2000pF maximum.)
Output Polarity: Non-Inverting.
Maximum Input: 70mV RMS at 1kHz (180mV RMS at 10kHz).
Rated Outputs: .50V RMS 10Hz to 60kHz, 100K ohm load (output capability is 50V RMS output at 1/2% THD at 1kHz).
Power Supplies: Electronically-regulated low and high voltage supplies. Line regulation better than .01%.
Noise: 0.2uV equivalent input noise, IHF weighted, shorted input (74 dB below 1mV 1kHz input).
Tube Complement: (3) 6H30 dual triodes with JFET input. 6550 and 6H30 as HV regulators.
Power Requirements: 100-135 VAC 60Hz (200 - 270VAC 50/60Hz) 80 watts maximum. Line fuse 3A slo blo (1.5A slo blo 230V). Standby: Less than 1 watt.
Specifications
(preliminary)

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