I don't know which speakers you have but if you want an integrated amp that has the qualities of tubes but a solid state output check out the Pathos. You will have the tight bass you want and an excellent midrange and top end. Deep bass to me is a coloration. A good amplifer should deliver the quality of the recording and the essence of the recording. It should be neutral. From what I have heard the Pathos is a good beginning. Visit your local dealer and give it a listen. I do not own the Pathos yet but it is on my short list when I stop using separates and go to integrated. It's just one of the integrated amps that sounds good period. Don't expect many tube based integrated to have tight bass. Finding a tube amp to go deep with control is the problem. And last how they integrate with your room and speakers is the next problem you have to address.
Tube Integrated with deep bass
As the subject states I'll like to know of any good tube integrated with deep, tight bass. To some this could sound like on oxymoron but the truth is some Vintage equipment do have deep bass. I'm looking for new equipment, no vintage.