Amps don't make good bass. Speakers create music, including bass response.
While it's true that different designs and different tubes will sound different, if you need more bass you need to find a speaker, compatible with your amp, that will deliver the bass response you are looking for. With your music, in your room and with your ears.
While it's true that different designs and different tubes will sound different, if you need more bass you need to find a speaker, compatible with your amp, that will deliver the bass response you are looking for. With your music, in your room and with your ears.