The PH3 is a phono preamplification stage intended for use with an active line-level stereo preamplifier. Fully single-ended from input to output, the PH3 uses a combination of J-FET …

The PH3 is a phono preamplification stage intended for use with an active line-level stereo preamplifier. Fully single-ended from input to output, the PH3 uses a combination of J-FET …

Audio Research的PH3真空管唱頭放大，是ARC頗受好評的一部中價位唱頭放大，在1996論壇龍虎榜裡面獲得5顆星的評價。 電路上，第一級是JFET兩顆並聯，目的就是要降低雜音；後面才 …

2008年6月10日 · The early PH3 was introduced by ARC as a budget piece, with the then-current SS PH2 selling for $1K more. I listened to both & bought the PH2. In turn the PH2 is …

2011年1月21日 · I m planning to build a phono pre amp using the audio research PH3 schematic. However, I m having problem identifying what is the JFET Q1 and Q2 used in the first stage. …

Used with typical line preamplifiers having 12 to 18 dB of gain, the PH3 is suitable for phono cartridges having .25 mV output or higher. Input impedance is factory-set at 47K ohms, and …

Originally retailing for $2600, this uses three 6922 tubes and a few transistors to bring the output of your favorite phono cartridge to line levels! Loaded with Sovtek 6922s per ARC …

2022年5月9日 · The ARC PH3 phono preamplifier has very wide bandwidth, low distortion and low noise with 54dB of gain. It uses three 6922 (E88cc) tubes. Sonically it has a beautiful …

From the ARC website: The PH3 is a phono preamplification stage intended for use with an active line-level stereo preamplifier. Fully single-ended from input to output, the PH3 uses a …