There are no user serviceable items inside the chassis of this amplifier. For your own safety contact us directly, or take it to a qualified technician. ValveTrain Amplification is not responsible for your safety when using this device. We give you these basics to protect you as well as ourselves.
Volume Controls - Probably the most interesting aspect of the 427 is the design of the initial gain stages. There are 2 volume controls, one for the Normal channel and one for the Bright channel. The two channels are internally isolated and “jumpered”.
Learn to use the Volume control on your guitar… Back it down to cleanup the signal and get clean, shimmering tones. Open it up to get additional crunch and overdrive tones Enjoy!! ValveTrain Amplification, LLC Page 5 ValveTrain 427 User Manual...
Use a soft cloth and follow the instructions on whatever product you choose. We do recommend keeping any of these products away from the control panel. Getting wax in the switches and controls is not a good thing!! ValveTrain Amplification, LLC Page 6 ValveTrain 427 User Manual...