Videohttps://www.youtube.com/watch?v=MA0aMIh1PDI
Manualhttps://static.roland.com/assets/media/pdf/GE-7_esp01_W.pdf
ControlesLevel Control knob,Equalizer Control knob,100, 200, 400, 800, 1.6 k, 3.2 k, 6.4 kHz,Pedal switch
AlimentaciónBateria alcalina de 9 V o AC adaptor.