Audio ResearchSP-9 mkIIIusedAudio Research SP-9 mkIII Hybrid Tube PreAudio Research SP-9 MK III Hybrid Tube Preamp with a great phono stage.This is the last version of the SP-9 from Audio Research; truly High Definition Audio.Upon release of the Mark III version, Au...926.00

Audio Research SP-9 mkIII Hybrid Tube Pre [Expired]


no longer for sale

Audio Research SP-9 MK III Hybrid Tube Preamp with a great phono stage.
This is the last version of the SP-9 from Audio Research; truly High Definition Audio.

Upon release of the Mark III version, Audio Research said:
The technical improvements are numerous for the MK III, and include the liberal use of M.I.T. capacitors in critical input and output locations; additional filter and bypass capacitors for the power supply; a new input circuit board that reduces point-to-point wiring and improves overall grounding; new gold-sleeved tube sockets for better corrosion resistance and lower noise; new 6922 dual triode tubes; and improved high voltage regulation.  Included 6922's are Sovtek.
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