The BD909 has been reverse-engineered from the original machine to give you an identical recreation of the original all-analog drum circuitry of the TR-909.
Additional controls and synthesis features turn this classic circuit into a chest-pounding analog bass drum laboratory – all tightly packed into an 8HP module.
The BD909 sound differs from the BD808 in that the main sonic energy is centered in the mid to low frequency range (as opposed to the low frequency range of the BD808). This frequency range gives the needed headroom allowing your bass lines to deeply fill up the low end while the kick drum rides on top – creating a clear and punchy mix.
The BD909 includes all the controls found in the original - Attack, Decay, Tune Decay, Accent, and Level - as well as some additional controls that further increase the palette of sound this circuit is capable of.
First off, there is a tuning control knob for the oscillator with its own CV input and attenuator that let you tune the 909 kick with your bass lines.
Next, there are control knobs for the tuning attack and extending tuning decay. Each one affects the other, allowing for intuitive and interactive sound shaping, opening up numerous “sweet spots” and provides the ability to center the energy peak at different parts of the sound.
Finally, there is additional punch and distortion by giving complete control over the internal waveshaper, which allows you to overload the waveform manually or with voltage control.
Beginning with the classic and pure sound of the 909 kick, these additional functions greatly expand the BD909’s flexibility and let you create powerful analog bass drums that range from soft and smooth to punchy and aggressive – and everything in between.
- Size: 8HP
- Depth: 36mm
- Power: +12V 34ma / -12V 21ma
- The product manual can be found here