We have collected the most relevant information on Audio Research High Definition Sp-4. Open the URLs, which are collected below, and you will find all the info you are interested in.
Audio Research SP4 Preamplifiers user reviews : 5 out of 5 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/sp4.html
That said, the SP4 sounds amazingly good. It is more forward than the SP6E, and has a slightly warmer signature. soundstage/imaging is superb, but not quite at the same level as the SP6E (which is one of the very best preamps ever made IMHO). In comparison to the Carver C-4000t, the SP4 is clearly more musical, and just better overall.
Audio Research SP-4 Stereo Pre Amplifier Manual - HiFi Engine
https://www.hifiengine.com/manual_library/audio-research/sp-4.shtml
The SP-4 surpasses our vacuum tube preamplifier in the most important areas. It has increased musical depth and definition with a smoothness that will satisfy any vacuum tube enthusiast. Specifications. Frequency response: 5Hz to 100kHz. Total harmonic distortion: 0.005%. Gain: 36dB (MM), 24dB (line) Signal to noise ratio: 84dB (MM), 95dB (line)
A Tune-up for the Audio Research SP-4/4A ... - Conrad Hoffman
http://conradhoffman.com/SP4A_caps.htm
A Tune-up for the Audio Research SP-4/4A Preamp. Introduction. The ARC SP-4 preamp was ARCs first solid state preamp. It was controversial at the time and some say it almost destroyed the company. Opinions about the sound quality are all over the map but based on dealer comments and my listening, it wasn't exactly world class.
Audio Research SP-4 Preamplifier - High Definition Solid ...
https://www.ebay.com/itm/144243141847
Details about Audio Research SP-4 Preamplifier - High Definition Solid State Stereo Preamp. ... Audio Research SP-4 Preamplifier - High Definition Solid State Stereo Preamp. Item Information. Condition: Used. Price: US $1,125.00. $49 for 24 months with PayPal Creditopens a installment calculator layer* $49 for 24 months. Minimum purchase required.
***REDUCED*** Audio Research SP-4 High Definition ...
https://www.canuckaudiomart.com/details/83644-audio_research_sp4_high_definition_preamplifier/
Classifieds: FOR SALE - ***REDUCED*** Audio Research SP-4 High Definition Preamplifier asking for $420.00
Now you know Audio Research High Definition Sp-4
Now that you know Audio Research High Definition Sp-4, we suggest that you familiarize yourself with information on similar questions.
