RS2 and RA1 Battery - frequently cited as the most neutral headphone amp of all time. Rated 8 for age, but both look and work like brand new. In original packaging, amp stored without battery so no leakage or other issues. Earphone pads less than one year old.
RS-2s are slightly smaller and lighter (more comfortable in my opinion) than the RS-1s. The newly introduced RS2e's are considered to be the best acoustic/classical earphones of all time, and these are very close in sound.
Wooden backs, light weight, perfect condition.