Tried tubes and LOVED it, now what?

Have it modded by someone who really knows their stuff.

I took a look at the circuitry of the unit and the design is nicely simple with no real circuit boards.

A prime candidate for easily noticeable qualitative upgrades. Ie, where the work done ---is easily heard.

Mods done? maybe $400 tops.

Upgrade? selling hassle and spend twice the money for little change upward and probably a notable amount of lateral shifting.