Geeky Gadgets Raspberry Pi Hybrid Tube Amp HAT Launches From $99 (video) Geeky Gadgets The 503HTA Raspberry Pi amp supports both 12AU7( ECC82) or 6922/6DJ8 (ECC88) type tubes and is equipped with a 3.5mm Jack plus selectable output resistance between 1.5, 32 and 100 ohms. The creators of the Raspberry Pi 503HTA Hybrid Tube ..

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Raspberry Pi Hybrid Tube Amp HAT Launches From $99 (video) – Geeky Gadgets