The AudioDigit Tube Pre
Hybrid Tube / Mosfet stereo preamplifier with "Audiophile quality" sound
The "AD Tube Pre" is a small hybrid tube / mosfet preamplifier that has been designed to complement our Class T amplifiers, can drive as well, all the various amplifiers you own

The "AD Tube Pre" is a real "Single Ended" tube preamp. We have high voltages inside for the tube, and fully regulated power supplies with soft start to ensure the cleanest and safest operation. Mosfet follower stages are employed to have really low output impedance to drive almost anything.

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Technical specifications
Single Ended Triode topology
2 channels operation
Fully regulated power supplies for the heaters and anode voltages
Soft start circuit for the anode supply, to maximize tube life
Voltage gain: about 13
Input impedance: 220 K Ohm
Alps blue volume pot
Brushed Aluminium case
1 cm. Aluminium front faceplate
Aluminium volume and input selector knobs
Three stereo "line level" inputs
IEC power receptacle
Power supply: 230V AC or 115 V AC
Dimentions: 23(d) x 23(w) x 5(h) (plus tube) cm.
Weight: 2.6 Kg.