adcom gfa 555 vs 555 II


I am planning to buy an used adcom gfa 555.
I was wondering if I should buy gfa 555 or 555II.
Any of you heard the difference between these 2 models ?
kslim
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buy a used chiro c-200. much better amp than either one. i had both the mk1 and 2 recently and the chiro killed them both in every way. but if you must go with adcom, i think the sereis one was smoother myself. compareing the chiro to the adcoms , i will put it this way the chiro is high end , very comparible to a krell kst 100. the adcoms sound weaker . you can also buy chiros for the same money as adcoms. i have one as a spare and not one for sale so i am not pumping my sale. if you start spending more money then i might talk of other amps as well. good luck.
Kirk930 is correct. Chiro great choice, and actually I would tell you to look at the Bryston 3B if you have to have a "name" amp. Not as many watts, yeah, I guess on paper, but actually delivers a deeper bass, especially to a 4 ohm load. probably a touch more money, but I just saw one sell for $400 shipped from Canada, so they can be had.
Did you know that Adcom amps are good candidates for modding? I spent $300 to have a 555 hot rodded and have kept it (primarliy as a backup) while others have come and gone. Modding opened mine up and provided sonic benefits which far outweighed the cost of the upgrades.
i still think for the 300 extra you spent moding the adcom.why not buy a better amp. that puts you in the 700 to 800 dollar range. their are a lot of amps in that range . you can almost buy a krell kst 100 in that range. i have seen them as cheap as 995. the kst is a far better amp than the adcom. you can also for about 1200 range buy a sonic frontiers power 1 . you could still buy the chiro and have lots of cash left over. or like jiva says bryston. if you have a chance compare the adcom to other amps , you will see. anyway thanks for listening to me yap kirk.