M196 A/B BOX DESCRIPTION • Routes instrument signal to two separate output paths • Select between two separate signal paths or run both at the same time • Thru jack allows you to connect to a tuner or amp that receives a constant signal from your guitar, unaffected by the A/B switches • Output jacks are terminated to ground in bypass • All switching is true hardwire POWER The MXR A/B BOX is powered by one 9 volt battery (remove bottom plate to install), a 9 volt AC Adapter such as the Dunlop ECB003/ECB003