Tube integrated with real bass. Does it exist?

I think the PrimaLuna Dialogue Premium HP (high-powered) would do the trick for you. You can use EL34, KT88, KT120 and KT150 tubes and run it into ultra-linear mode or triode. It will do 96W X 2 into 8 ohms running ultra-linear with KT150 tubes.

I have heard "real" bass with ARC, ROGUE, and VAC integrateds driving PSB, Magnepan, Sonus Faber and other popular speaker lines at least in a modest not large showroom. 80w/ch + or so needed. No low pipe organ notes in any demos I've heard though so can't speak to those.

Those are the three lines I have heard and like most that I would go for. I'm sure there are others.

I bet a lot of people would like to see Atmasphere offer an integrated.l I think I asked Ralph about this once and he said it was a possibility.

I'm very satisfied with the bass I am getting from my VAC Sigma 160i integrated amp driving my 90 dB, 5 ohm speakers.

It is not as earth rattling as some bass I've heard from some large SS amps from the likes of Krell, Plinius, etc. However, to me it sounds more real or natural. Sometimes I think some of those SS monster amps emphasize the bass region, which will please some, but it is a coloration nonetheless.

Cheers,
John

vote 2 for Air Tight products ... I have the "Acoustic Masterpiece" M101. Only 8w but great bass even compared with my 200w/ch Lyngdorf SS integrated into 89db 2way floorstanders

Only OTL direct-coupled amps can have real bass on speakers that don't require large current.
Even taken that as a fact, solid states would still do better in that department.