Overview
Audio Research - PH6 Phono Preamp
As the analog renaissance shows no signs of diminishing, the PH6 opens the door to truly high performance analog music playback in a price range that is within reach of many music lovers.
The PH6 is a hybrid phono stage with a low-noise, high-gain JFET input stage with constant current stabilization and no overall feedback. Unlike its predecessors, the PH6 incorporates two high current 6H30 twin triodes in the gain and output stages; you can expect over 4,000 hours from the PH6’s tube set. Total gain is 58dB, more than sufficient for low output moving coil cartridges when it is partnered with an appropriate line stage. Bandwidth is an incredible <0.5Hz to 400kHz (-3dB).
Specifications
SPECIFICATIONS
FREQUENCY RESPONSE: ±0.2dB of RIAA, 10Hz to 60kHz; 3dB points below 0.5Hz and above 400kHz.
DISTORTION: Less than .005% at .50V RMS 1kHz output. GAIN: 58dB at 1kHz (MC & MM compatible).
PANEL CONTROLS: Power, Mute, Mono, Load.
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 INPUTS: 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 0.5% THD at 1kHz).
POWER SUPPLIES: Electronically-regulated low and high voltage supplies. Line regulation better than .01%.
NOISE: 0.15uV equivalent input noise, IHF weighted, shorted input (76 dB below 1mV 1kHz input).
TUBE COMPLEMENT: (2) 6H30 dual triodes with JFET input. Solid state power supply.
POWER REQUIREMENTS: 100-135VAC 60Hz (200 - 270VAC 50/60Hz) 50 watts maximum. Line fuse 2A slo-blo (1A slo blo 230V). 0.3 watts standby.
DIMENSIONS: 19" (47 cm) W x 5.22" (13.2 cm) H x 10.0" (25.4 cm) D. Rear chassis fittings extend 0.6" (1.5 cm).
WEIGHT: 11.3 lbs. (5.1 kg) Net; 19 lbs. (8.6 kg) Shipping.
About the Brand
Audio Research is one of the oldest continually operating manufacturers in American audio.The company was founded in 1970 in Minneapolis with one goal in mind: to advance the state-of-the-art in music reproduction. Today, Audio Research remains a performance-oriented company by philosophy and design. New product introductions are driven only by genuine advances in technology and performance -- the HIGH DEFINITION that is the hallmark of the company's products. Much more than a mere carriage-trade brand name, the Audio Research marque has come to represent stellar performance and lasting value for music lovers and audio enthusiasts everywhere.
Warranty Information: 3 years on all products, 90 days on tubes
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