If you are planning on purchasing a new amp I would like to recommend the Tone King line of amps because (in addition to their great tone and build quality) their after purchase warranty and Customer Service is the best I have experienced in the 50 + years I have been buying music equipment. Mark Bartel the General Manager and designer of the Imperial (which I purchased) and the other great amps in the Tone King lineup, is a super nice person and very responsive to inquires related to technical and warranty requests. Most important he takes action on ensuring that your concerns about warranty and / or technical needs are addressed in a timely manner. IMHO great amps are a combination of outstanding customer service and having that quality build tone you are seeking. For me Tone King has both of these attributes. Take a few minutes and Google Tone King and you will find information not only about Mark but the Tone King line of amps.