Nathan;
I have not played through the reissued Model T, however I do know that it uses a quartet of 6L6GC output tubes. The original Sunn amps used 6550 output tubes predominantly, with EL34's on the lower-powered amps such as the Sonaro. These tube selections were a hold-over from the early days of Sunn when the amp chassis were actually Dynaco hi-fi amps. 6L6GC's sound very different than 6550's so I wouldn't expect the reissues to sound like the original Sunn amps. I own several 60's and 70's vintage Sunn tube amps and they are wonderful...especially for bass. They are also a tremendous value for vintage gear. Keep looking and you will find a vintage Sunn tube head! New filter caps and fresh tubes and you will be in bass tone heaven!
Good Luck!
Ryan