Audio Research PH7
PH7 var ARC’s toppriaa i perioden mellan Reference Phono och Reference Phono 2. Detta är varianten med den uppdaterade nätdelen.
Kunden har uppgraderat till Aesthetix Rhea Signature.
Kan provlyssnas hos oss, eller lånas hem för test. Alla
tillbehör och lådor finns. De är i mycket fint skick.
Säljes för 35 000:-, eller rimliga bud. Paketpris med Ref 3 och Ref210 kan ordnas
ith the much-lauded PH5 phono preamplifier, Audio Research set a new benchmark for phono performance and features at its modest price. Now, phono enthusiasts have a new and even higher performance option: the all-new PH7 stereo phono preamplifier.
The PH7 takes advantage of more recent technology developed for products like the landmark Reference 3 preamplifier, and uses an all-vacuum-tube audio stage with four 6922 twin triodes. Regulation of the power supply is also vacuum-tube, using three 6H30 triodes. Output coupling caps are the costly, advanced types proprietary to Audio Research, with power-supply energy storage more than three times that of the PH5. Circuit board material, power transformer design and size, and other components have been exactingly selected to boost phono performance to a previously unachievable level.
The PH7 has 57.5 dB of overall gain, and features one pair of single-ended inputs and outputs. Full remote control is provided for all functions, coupled to an easily readable front-panel vacuum-fluorescent display. The display shows all selected functions including loading (47K, 1K, 500, 200, 100 ohms), as well as accumulated hours of operation. Display intensity can be adjusted to one of eight levels, plus off.