I'll bite. I like Cayin's 2 channel products like the A-55TP and really think your SP-10A is one of the most handsome looking integrated amps of the last decade... If it had a headphone jack on it I think it would've given Leben CS300 and Luxman's SQ-38u a run for their money and least with my wallets consideration.
That said here is my response for the RFQ:
Location - USA, Long Beach, California 90806
Headphones: Sennheiser HD800, Audeze LCD2, Hifiman HE400...