The Hattor Audio Tube Active Stage is specifically intended for use with the Hattor Audio Ultimate Passive Pre (The Big). The price for the unit, $1,900, is in addition to the price for the passive preamp. However, you can use this unit as a standalone buffer/gain stage with other passive preamps, or as the buffer for a component with very weaker output.
The Tube Active Stage uses the finest parts available from MIFLEX, SIZEI toroidal power transformer, AMRG resistors and quality jacks (either RCA or XLR).
Tubes - ECC82 (12AU7/5963) from JAN PHILIPS
The stage has sufficiently low output impedance to drive two power amplifiers.
Neutrik XLR connectors
CMC RCA sockets
Two parallel outputs for biamping
Gain: +9 dB
Signal/Noise Ratio: 105 dB
Distortion (THD, IMD): 0.01 %
Input Impedance: 5K ohm
Output Impedance: 200 ohm