A question of volume..

Rocker

My Minimark is fine for the bass playing I do which is a get together with a few friends every couple of weeks. Drums, lead guitar, vocals and acoustic guitar - the bass is not lost in the overall sound. This week I used my Tele through the Minimark and it sounded wimpy and insipid. Hopeless in fact. Is there anything I can do to increase the volume while still retaining the clarity that is the Tele sound? My 1*10 Stinger combo goes crunchy above a certain sound level. Lovely if I want crunch but I don't. So is there any option to buying another amp or combo to get louder clean? Buying another amp is the last thing I want to do due to lack of space for the kit I already have. Thanks.