TXM20 Tabletop Powered Mixer Samson"s new TXM powered tabletop mixers feature recording console specs, studio quality effects and loads of power, designed as an all in one portable yet powerful solution for live sound applications. The TXM20 is a 20Channel powered mixer, with selectable power amp mode settings for 500W of power per channel, or 1000W in bridged mono. Clearance Price: The price shown is only while supplies last. Original price was $799.99.