I purchased the amps in 2017 at Ohmaudio , Groningen, the Netherlands. They were aprox. 6 years old then.
The amps are from 2009 - 2010.
The system : Audio Research Reference 5 pre-amp , Magnepan 20.7 speakers , Mytek Manhattan II  dac and streamer.
Straight Wire Crescendo speaker wire , 1,5 mtr.  Straight Wire Crescendo XLR - XLR  85 cm. ( dac to pre-amp ) ,
Harmonic Technology P2A interconnect XLR ( analog fiber cable with power supply )  pre-amp to power amp.
Original packaging present. Power cables : Ps audio.
No servicing so far. They are build for eternity.