Threshold SA/4E or Pass X-250??

I'd suggest getting in contact with Jon Soderberg of Vintage Amp Repair:
http://www.vintageamprepair.net/

Thanks Unsound. I called and he gets in around 8:30 my time tonight so i will call him back. Also called and talked to Threshold about the cost of a basic rebuild and re-bias of the amp. I Hope the SA/4e does as well with my Harbeths as it did with the Thiels when I heard it.

I can't speak for the Harbeths, but I do share your enthusiasm for Threshold with Thiels. Best of luck.

As nice as the amp was with the Thiels, didnt work out to great with the Harbeths. I will keep listening until I sell it, in case I change my mind. But will probably try either the Pass or one of the McCormack amps after I recover my $$$

While I'm not a big fan of the Harbeths, I'd hazard a guess that a McCormack might a better fit with them. Best of luck.