I built this 15 amp 5E-3 clone amp to use with my harmonica. It has less than a half hour of playing time on it. It has never had a guitar on it ....only a harp mic played through it. It has two 6V6s power tubes......two ECC83s Pre amp tubes ....and a GZ34s rectifier tube. It has a cover with it that is made just for the 5E-3 amp. I'm asking $800 but will consider any reasonable offer .