Introducing the TOMS909, the warmth of the classic all-analog punchy tom-toms
from the TR-909 drum machine further expanding your Tiptop modular music
production system.

The TOMS909 contains all three of the TR-909’s original Low, Mid and High
tom-tom circuits adapted for use in the Eurorack modular synthesizer format. The
module was tested to sound like a fresh machine coming off the assembly line back
in the 80’s. To add flavor to the beast we have extended each tom’s tuning range
so it’s easier to dial soft bass drums on the lower ends and high pitched toms on
the other. In addtion to that all three toms are voltage controlled, letting you play
the tom’s pitch with CV sequencers like the Z8000, reshape the tuning with
envelopes and LFOs, and create new metallic sounding percussive sounds using
audio rate frequency modulation of the internal analog oscillators.

The toms circuitry is made up of 9 triangle oscillators and a stack of filters, VCAs,
and envelopes which in total took about half of the space on the original 909’s
circuit board. Utilizing the latest in electronic design technology we have managed to
squeeze this enormous circuit, consisting of more than 450(!!) components, into a
tight area only 16HP wide. It is a beautiful board with hundreds of tiny shiny
components, a little analog jewel. 
     
Each tom includes a trigger and accent input with accent level control, manual tune, voltage-control tune input with attenuator, and independent audio out. In addition,
a MIX out is available that sums all three toms together. On each gate input, we
have designed a dual pulse-shaper circuit so you can trigger your TOMS909 with
Trigger/Gate signals from sequencers or any other pulse/clock sources.



16HP
2” Deep
+12V@120ma
-12V@100ma