Stoneham Amplification - Its alive!!! Dumbell build fired up today and ready for you all to come and try. It's essentially two Fender preamp, you can use the first one for cleans
Dumble Amp Guide: Background, History, Availability - Guitar Space
Stream Glacian Clean + Dumbell 4x12 by Hotone Audio | Listen online for free on SoundCloud
Examining a '77 Dumble Overdrive Special 1x12 | GuitarPlayer
Overdrive Special Guitar Amplifier – Nembrini Audio
Alexander Dumble 1944-2022 | Vintage Guitar® magazine
1980s Dumble Overdrive Special - Dream Guitars
Dumble Amplifiers - Wikipedia
Alexander Dumble 1944-2022 | Vintage Guitar® magazine