what are your speakers the specs you posted sound great?.@geek101
Classic Audio Loudspeakers model T-3.3
Isn't the presence of those transformers in non-OTL tube power amps one cause of their often mediocre bass reproduction?@bdp24
I think you answered your question in the paragraph following the quote above. Roger is not the only one that has good bass response using an output transformer! Some other examples are:H/K Citation 2VaicVTL Siegfried-and this is a teeny tiny list, but made to show the range of amps that are out there; the 1st is a vintage amp, the 2nd SET and the 3rd a very large P-P amp.
I don't think I would say that transformer-coupled amps often have mediocre bass reproduction, with the possible exception of ARC and a few SETs (although I've heard some of the ARCs to be quite good). Dynaco did quite well for themselves back in the old days (and the way to improve them is through the power supplies)- as did Fisher and a host of others. I think the idea of 'tight bass' has been around too long and should be recognized for what it is: a coloration.
Careful transformer design is the key, but as you point out, it can get even better if there is no transformer at all...