Each tube will sound act differently in different circuits, so you really need to experiment a bit. Some of the best bass I’ve ever heard (tubes or SS) was from a set of CAT amps using KT120s. In my Dyna/VTA 70s, the Nesstone 6CA7 did better with bass on the woofers in a vertical bi-amp system than the EH-EL34s, EH 6CA7, Shuguang, or Siemens EL-34s, IMHO. It’s subjective, room dependent, and system dependent too, so YMMV.
Bi-amped system
I’ve received help here on audiogon, so I want to pitch a question. First my system: (2) HK citation 2’s (mostly rebuilt) both wired in triode mode, one for mids and tweet and the other for bass. Audio physics original virgos, with (2) 6” woofers, crossover at 350hz. I’m happy with this system, sounds good but as a dedicated audiophile I’m always looking to change something 🤷♂️
using golden dragon kt 88’s… but wondering if there is another tube out there with more emphasis on bass and another with more emphasis on midrange for each amp? Without spending a fortune or using a subwoofer… what’s your opinion or experience?