BOSS AD-8 Acoustic Guitar Processor Preamp for Acoustic Guitar This is a set including the main unit and adapter. (The adapter is a general-purpose compatible product) All functions have been tested and confirmed to be working. I was using it until recently. * One knob has been replaced. (Please refer to the photos. There are no problems with use.) 【Operational Status】 ・Power supply OK with both AA batteries and power adapter ・Each footswitch works OK ・Each knob works OK ・Each button works OK ・Each jack works OK ・LED lights up OK Stage processor that brings out the rich sound of an acoustic guitar The AD-8 is a processor that reproduces the beautiful sound of an acoustic guitar using modeling technology. It is especially effective in live performances because it allows you to obtain the original sound of an acoustic guitar when using a piezo pickup. ・COSM reproduces the realistic sound of an acoustic guitar ・Equipped with a high-performance reverb and 4-band EQ developed for acoustic guitars ・Equipped with a high-performance tuner with mute function ・4 memory slots available. Equipped with stereo balanced output The condition is relatively good, but there is some wear and tear, so please understand that it is a used item. Please refrain from purchasing if you are looking for a perfect condition item or if you are sensitive to minor imperfections. We are not responsible for any damage caused by shipping. No claims and no cancellations are accepted.