Hattor Audio are based in Poland and make some very high quality passive pre-amplifiers. This model is one of their circuit relay versions with RCA connections. It is silent and very transparent and connected between a DAC and your Power amplifier/s will be the ultimate sound possible. Fast, clear, no distortion, very 3D. I have two of these units, and it easily beat my Audio Note M5 pre-amplifier as a direct connection from my DAC to my Power Amplifiers.
The unit has a 3 way source selector and 2 attenuated outputs to serve 1 Power Amplifier or 2 Mono Blocks. It has a wall connector for power to the circuits and display only. Note, the signal path is not amplified or modified in any way, it is essentially and invisible component hence no quality loss or loss of detail from the source to the power amplifier.
This unit has had very light use as in a second system, around 100 hours max.
Size: Width 25 cm, Height 7.5 cm, Depth 24 cm. Thick aluminium faceplate, dark wood side cheeks, Aluminium top, base plate and back plate. Gold plated RCA's. Solid metal remote control for volume and defeat.
Any questions please PM me.