Here's all the information you'll need to get in contact with Dr. Z Amps:
Dr. Z Amplification
17011 Broadway Ave.
Maple Hts. OH 44137
Phone: (216) 475-1444
Repair Dept. : (216) 475-1962
Fax: (216) 475-4333
to contact our Repair Dept go HERE
Please note: All repairs on used Z amps will incur a $60 minimum bench charge.
All repairs on used Z amps have a 90 day warranty.