Audio Research PH9 phono preamplifier


Foundation PH9

New! Phono Preamplifier

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.

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±.2 dB of RIAA, 5 Hz to 20kHz; 1 dB points below 0.3Hz and above 80 kHz.DISTORTION
Less than .015% at 3V RMS 1kHz output.GAIN
55 dB at 1 kHz

Selectable loads: 47k, 1000, 500, 200, 100 Ohms.

200 ohms. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms
minimum and 2000 pF maximum).


80 mV RMS at 1kHz.

0.5V RMS 10 Hz to 60 kHz, into 100K ohm load (maximum balanced output
capability is 0.46V RMS at less than 0.5% THD at 1kHz).CONTROLS
6 Push Buttons:  Power, Menu, Option, Enter, Input, Mute.POWER SUPPLIES
Electronically regulated low and high voltage supplies.  Automatic 2 minute
warm-up/brown-out mute.  Line regulation better than .01%.

>77 dB, shorted inputs.

(3)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.

100-125VAC 60Hz (200-250VAC 50/60Hz) 120 watts maximum. Standby: 2

Width: 19” (48 cm)
Height: 6.5” (13.7 cm)
Depth: 13.7” (34.8 cm)
Handles extend 1.6” (4 cm) forward of the front panel.
Weight:   15.4 lbs. (7 kg) Net; 23.5 lbs. (10.7 kg) Shipping.

new amplifier will follow, with other products to complete the series. All models will be available in both black and natural anodized aluminum finishes. Each unit comes with its own custom metal remote control.

Since 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.

+/-0.15dB  20Hz – 20kHz; +/-3.0dB 6Hz – 192kHz.THD+NOISE
Less than .002% at  2V RMS 1kHz Balanced output.SIGNAL TO NOISE
>114dB.IMD +  NOISE
Power, Menu, Option, Enter, Input, Mute.OUTPUT IMPEDANCE
500 Ohms balanced, 250 Ohms SE.

Selectable Fast or Slow algorithms.UPSAMPLING
All Inputs upsample to 384kHz.INPUTS
USB2.0HS  44.1 to 384kHz, DSD, 2xDSD; RCA, BNC, XLR 44.1 to 192kHz; TOS 44.1 to 96kHz.RATED OUTPUTS
3.8V RMS Max Balanced; 1.9V max SE (@ 0dB input).POWER SUPPLIES
Electronically-regulated low and high voltage supplies. Line regulation better than .01%.NOISE
(2) 6H30 dual triodes.POWER REQUIREMENTS
100-125VAC 60Hz (200 – 250VAC 50/60Hz) 60 watts maximum.STAND BY
Less than 2 watt.

Additional Information



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