I don't really know much about Jolida amps but when I read your post I recalled an ad I just saw for a demo JD 1501RC although it is in Toronto, Canada.
They want $750 CAD for it which is probably around the USD 600 you want to pay:
http://www.canuckaudiomart.com/details/19101-jolida_jd1501rc_hybrid_tube_integrated_amplifier
Good luck,
Ward
They want $750 CAD for it which is probably around the USD 600 you want to pay:
http://www.canuckaudiomart.com/details/19101-jolida_jd1501rc_hybrid_tube_integrated_amplifier
Good luck,
Ward