Shin's Music Dumbloid FET Custom Preamp Drive Pedal - Grey Western / Black Panel Shin's FET Dumbloid is arguably the company's most complete expression of the "Dumble in a box" concept. While the standard Dumbloid captures the overdrive channel of a Dumble-style amplifier, the FET Custom Preamp version adds another critical piece of the puzzle: The FET input stage found on many original Dumble amplifiers. Rather than functioning as a simple clean boost, the FET input acted as an active front-end preamp that: Increased headroom Added harmonic richness Tightened the low end Enhanced pick attack Made the amp feel more responsive Shin's recreated this circuit for pedalboard use, describing it as a clear, powerful FET booster that can be adjusted internally via a trim pot, just like the original amplifier's FET input stage. The FET Custom Preamp Drive combines: A standalone FET preamp The classic Dumbloid overdrive That means you can use: FET only Overdrive only FET into the overdrive The last option is where the pedal really shines, because it pushes the drive section much like plugging into the FET input of a real Dumble amplifier. Controls: Drive – amount of gain Tone – overall EQ Accent – functions similarly to a presence/post-gain control, affecting attack and upper harmonics Volume – output level Jazz/Rock switch – changes the overall voicing. Jazz = smoother, softer, and more rounded. Rock = more forward midrange, stronger attack, and higher perceived gain.
