Audio Research SP9

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Stereo Design Audio Research SP20 Tube Preamplifier

This is the Audio Research SP20 stereo preamplifier. It is a tube unit with a phono stage and headphone amplifier built in.

Stereo Design Audio Research Reference 5SE Stereo Tube Preamplifier in HD

This is the brand new Audio Research Reference 5SE stereo tube preamplifier. It is available in black or natural (as shown) and ...

Audio Research SP-4 Preamp.and match Audio Research D-100 Amp.Amazing shape and sound!

Both preamplifier ARC SP-4 and D-100 are in MINT condition! Play music amazing and look like NEW! Playing with Tannoy ...