I designed the AM7 for my close friend, Adam. He grew up playing metal in the 90s and early 2000s, a period that popularized heavy riffs only made possible by grafting an extra bass string onto a guitar.
Traditional seven-string guitars can be bulky and heavy. A resurgence of the headless guitar design grew in popularity during the 2010s for good reason. Ditching the headstock, where the turners rest on a traditional guitar, saves plenty of weight and provides better balance. This is why I used my "comfy bass" design as a starting point. Adam and I agreed that this guitar should be deceptively simple and ergonomic.
Regarding simplicity, the guitar has a single volume control. For added versatility—the "deceptive" part—the volume knob is a push/pull switch that toggles between two of the Fishman Fluence pickup's voicings. Paired with a five-way toggle, these controls offer more than enough range to cover the Jazz and Technical Death Metal Adam loves to play.
As for ergonomics, we focused on comfort and playability: