Scruff & Audio Research
members.aol.comTribute to Audio Research Corporation (ARC) SP tube preamplifiers. Photos and description of SP-2, SP-3, SP-6, SP-8 preamps. Information about tubes, line conditioners and related topics.
Tribute to Audio Research Corporation (ARC) SP tube preamplifiers. Photos and description of SP-2, SP-3, SP-6, SP-8 preamps. Information about tubes, line conditioners and related topics.