Three in one is the main motto here. The idea is  to avoid having to plug and unplug different guitars in to one amp – as you may know, this is not done quickly and easily without causing considerable noise. With the TRINITY – box you can selectively switch three instruments on to one output. In addition each input can be boosted up to +12dB by an individual stepless pot. This helps to balance out differences in level between the instruments without having to change the amps settings.