I’m fortunate that 10 years ago I was able to acquire two Ampeg Port-A-Flex bass amps for reasonable prices: a 1974 (+/- a few years) B-15N and a 1966 B-18N. I regularly play the B-15 because I like its tone, but I’ve never warmed up to how the B-18 sounds. So the 15 is always ready to use, but...