i'd have no concern w/melos' current operation, melos audio restorations. talk w/brant nordlund 702.248.6754. melosaudio@aol.com. i sent him my m-d due to a couple issues i had w/it when i 1st got it - due to the problems the *old* melos had! ;~) my unit was an updated older unit that, it turned out, dint have all the updates as melos represented to the seller, & the seller had represented to me. brant, at the new operation, was more than fair, and the work was good, & turn-around was also good.
brant also offers mods to the preamps that improve the units beyond the last iterations the factory had. i will prolly send my pre back to him for these, after he finishes developing an updated photentiometer wolume-pot, which i want installed in my pre. the photentiometers, i tink, are the most transparent pots out there, but melos *did* have reliability issues w/these, cuz they were so sensitive to proper alignment - brant sez they had about a 25% failure-rate yust due to shipping! due to that, their last products - the *maestro* wersion of the sha-gold, & the music-director wersion of the ma333 - used conwentional hi-quality alps analog pots. still excellent pots, but i want a photentiometer in my melos! ;~)
hope this helps, doug s.