Aquarius is the instrument for coordinating Buchla systems with other standards (for example Eurorack format). It consists of modules 225h and 202h. Four empty spaces, covered with plugs, can be used to place other modules of the 200e series.
Buchla 202h is a true "wand" for the owners of modular systems in the Eurorack format - a set of utilities as the manufacturer entitled it. The module consists of three blocks: ADAPT - a set of adapters (3.5 TRS in 6.35 TRS, TINI-cable, etc.). CV PROC -...
The Buchla 225h is basically 202h module with the only difference: the "pulse conv" block is replaced with the "MIDI outputs" block. The converter allows you to convert a MIDI signal into control signal (pitch, note on, bend, mod wheel, aftertouch,...