We specialize in BJT (transistor) amplifiers but were more than capable of repairing tube style equipment as well. From a power wire upgrade to adding bias on the equipment you already have to a full repair of your equipment we can help you. We also build custom amplifiers for mobile DC use as well as AC base amplifiers. Do you need a DC power supply to run your favorite equipment indoors? We can help you with that as well. We use quality welding cables ptfe (teflon) wire and high quality capacitors that will ensure your equipment will be reliable for years to come. If your needing any type of repair at all. Send us a message with a few details and well get back to you within 24 hours with information on where to ship for your repairs/upgrades.