Mini Tube Preamp

Available from my eBay store.

The possibilities are endless when you combine an authentic tube amp with a compact foot print on a efficient 13.8v platform.  Measuring only 2”W x 3”L  x 3 this preamp has found its way into various mobile systems, home systems, Bluetooth speakers, guitar amps and art deco vintage reproductions.

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Available w/wo Bluetooth 4 + APTX.

Line in/out with gain control.

Full featured tube preamp with adjustable 300v B+ supply.

Fits enclosures larger than 2”W x 3”L  x 3”H ID.

2ch 12ax7 preamp quick

Mini preamp schematic

Mini Pre Amp Assembly Instructions