The MAX Bass combo series is just perfect for small gigs and for practising. All amps got the patented Transtube technology for the great classical bass sounds. The different characeteristics bass sounds are switchable on most amp models. All combos have the DDT compression/limiter for great sound and safety. On our two biggest models we use our new patented 'Hypervent' bass-reflex construction, that produces a big fat bass sound and cuts of huming noises and for example reduces the rettling of the frontgrill.