This is one of the most versatile distortion guitar effects available today and it’s mounted right inside the Bumstead Imperial, Cordoba and Fury!  Imagine having an active boost and three incremental overdrive tones available at your fingertips. Just plug your Bumstead into an amp and rock-out!

The Bumstead Overdrive Circuit (BOC) runs on a single 9 volt battery and its entire distortion range can be fine tuned via an internal trim-pot. A great option for those who want to “tweak” their guitar's sound.

The BOC is equipped with a 5-way rotaryswitch.Position one is passive off. It removes the circuit from the guitar’s output signal. Position two is “Active” mode designed to maintain the guitar’s tone with a low impedance, which is great for driving a string of foot pedals with NO SIGNAL LOSS. Position three - five incrementally increases the overdrive tone of the guitars output while maintaining the tonal range of the guitar.

1. Passive mode
2. Active mode that maintains tone and increases sustain.
3. True blues overdrive sound that transparently enhances the clean tone of the Cordoba's and Monaro's pickups.
4. Classic rock overdrive tone with just the right amount of sustain.
5. Sweet metal distortion with a fat midrange and ultra long sustain.

The Cordoba and Monaro also include a 6-way pickup selection switch. The combination of the BOC and 6-way expand the capabilities of the guitar putting the guitarist in center stage!

Important Notes:

• Even though this circuit has a Passive position, the BOC is deactivated only when the guitar is unplugged from its cable. Leaving the cable plugged into the guitar when its not in use will drain the circuits 9 volt battery.
• On some of the Cordoba models, the battery for the BOC is stored within the volume and tone control cavity of the guitar, so extra care should be taken when replacing the battery. It's also recomended to wrap the 9 volt battery's metal casing in electrical tape so that it doesn't ground out any of the internal components.
• If the overdrive effect seems to be scratchy or too noisey, then check your amp settings. You probably have an overdrive or "bright" setting on the amp turned on. Turn this off as its not needed. The BOC should perform outstanding at this point!