Roland's Transistor Rhythm Synthesizer number 8, the TR-8. What a marvelous percussion beast it is.
All the sounds in this video come from it, including the reverb and delay effects (onboard). I also added a slight two step octave arpeggio on TB-3 sub bass sine wave. However, the punch of the 909 kick can still be heard very clearly, on top of TB-3. It is due to the fact, the bass drum is sent through a separate mono channel in the mixer. It has different equalizer settings from the rest of percussions. In the beginning of this improvisation, you can hear the first bass drum used, a 606 or 707 one (can't really remember, the first in the tom section). It has no separate rooting, nor compression and you can mostly hear the higher frequencies. The fact you can use 2 different drum basses makes the TR-8 a jack of all trades for me.