tubes 4 hifi
 "the path of least resistance is through a vacuum"

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SP11 preamp

this is our new low-powered tube preamp, available as KIT or ASSEMBLED

This is based on the same circuit as our SP12 and SP14 preamps, but with a different power supply that runs on an 18vac wal-wart.
Full kit with tubes and all parts is $425, or assembled and ready to play for $525.
Has 3 pairs of inputs and one pair of outputs. Selector, Volume, and Power switch on front panel.

full kit $425 plus $25 shipping in USA
assembled/tested SP11 preamp $525 plus $30 shipping in USA


construction photos


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 tubes 4 hifi
 "the path of least resistance is through a vacuum"