ingredients. 1 battery for the minidisc player. 1 battery for the amp. 1 small 2 channel mixer (9v.dry cell) Method. Plug your instrument into the mixer (may have to be pre-amp't)plug your minidisc player into the mixer also. plug the mixer into the amp, turn it all on and start playing with all the knobbs and sliders untill you sound fantastic!!!! Then you can go ern some cash. Good luck, John the harp.