40W professional electric guitar power amplifier SWITCH:OVER DRIVE ON/OFF JACK: HEADPHONE ... SPEAKER: 1*8" Name:40W professional electric guitar power amplifierModel No.:JX-8040POWER CONSUMPTIONS:40WSWITCH:OVER DRIVE ... ,child guitar,electric guitar,violin,bass guitar,ukulele,amplifier,accessory etc.2.Main MaterialMaily using good wood ... instrument co.,ltd. 40W professional electric guitar power amplifier