i never tried a 2nd mr77. miine was working when i got it. because it sounded so bad, i called mcintosh and they recommended a local factory-authorized tech w/over 30 years experience on mac and tuna. $250 later it at least sounded like a radio, but not much more. easily the most weiled, closed in, undynamic, 2-d sound i have heard from what is supposed to be an fm tuna. because there seems to be such polarization on the mac sound, i did decide to try a 2nd one, this time an mr74 cuz several folks say it is mac's best sounding tuna. i did not have this one serviced, cuz it was mint, from an original owner, who bought it local, not 50 miles from binghampton, ny. while it was better than the mr77 it still sucked - it definitely had the same family sonic flavor. i had it in my system for 3 months, trying to conwince myself it was ok. when i finally swapped it out, i went for what was my first "good" tuna - the onix bwd-w/soap-2, it was like the clouds had lifted, the weils were withdrawn, and once again, there was music chez-sedon. The onix is a fine performer, the one that got me started down the tuna madness trail, only bested by the wery wery best, which imo, includes the likes of my modded hk 18, modded tu x1, refurb'd sherwood s3000v, refurb'd stromberg-carlson sr443 w/studio-12 mpx, refurb'd modded rotel rht-10, sherwood s3000-lll/s2100-ll w/studio-12 mpx...
ancillary equipment includes a heavily modified melos ma333r preamp, speakers have included meret re monitors, coincident victory's, piega mk5 mkll ltd's, custom oris 150 horn w/decware modded fostex fe206 drivers, crossed over to custom lascala bass-bins loaded w/fostex 15" woofers. all speakers are actively crossed over to a pair of vmps upright-style larger subs. x-overs have included marchand and deqx. amps depend on the speakers, and have included hypex ucd180 customs, custom gainclones, a pair of electrocompaniet aw75dmb's, mesa baron, audio mirror 6c33c monoblocks, almarro a205a mkll w/cap upgrades, manley mahi-mahi's, set monoblocks from an akai m8 tape deck, custom set amps from engineers in germany and australia...
doug s.