I have an X-100B that I bought new in the late 80's/early 90's(?). It's black tolex, GT EL-34's (x4), 4,8 or 16 ohm, 25, 50 or 100w. Full size box - like Marshall. So, I'd like some honest opinions/thoughts on this model and a suggested current street value, please. Back in the post-punk days, a strat w/barts and an orig. RAT & that amp would sing thru a Marshall 2-12 cab. Never let me down. But, I was just giving up bass for a season and haven't used it in years... maybe it's time to clean house. Thanks for your thoughts - good or bad.