bought a pair of used Sound Lab speakers. i had only read one review in sterephile of model 1a many years ago. these are the best speakers ive ever heard. using an old nad pre and a fosgate amp high class c at best. nht 3.3,dq10, van 2ce,sound dynamics 3ti are among the 100 or so speakers ive owend none of them remotely compare. in every aspect of sound reproduction the 4a excel.