Ok, so today at band practice, I played my jaguar through this old peavey classic 30 guitar amp, and I was nothing short of amazed by the warm, tubey, vintage sound. I am currently looking for a new amp, but I've been dissapointed by the shortage of full, or more than one-tube bass combos under 1k $. So, should I, and can I replace the speaker with a 12' bass speaker, and will 30 watts from this amp be louder than the 100 from my fender rumble? And if not, is there any combo out there, for under 1k, that has more than like one tube? Or atleast sounds like it has? Thank you.