Tiptop Audio BD909 TR909 Bass Drum Generator, white pocket It can create filter sweeps

It can create filter sweeps

Expression pedal input provides control of Time or Feedback

Save and load up to 16 patterns

The custom cut foam insert means you can be confident that your drum machine is completely secure

each producing a damped sine wave at a different frequency

Tiptop Audio BD909 TR909 Bass Drum Generator, white pocket It can create filter sweepsReverse engineered from the original machine, the BD909 is an identical recreation of the original all analog drum circuit of the TR 909. With added additional control and synthesis features that turn this classic circuit into a chest pounding analog bass drum laboratory all tight packed into an 8HP module. The BD909 sound differs from the BD808 in that the main sonic energy is centered in the mid of low frequency range (as opposed to the low