Analogue-sequencer

> To properly use a DB25 connector for CV and trigger outputs 
> you would indeed need a special cable.

Actually, most of the DB25 cables you find will have all pins wired
straight-through.
They have to be to work with old Apple-style SCSI and PC parallel ports.
I probably wouldn't be using it if I couldn't get ready-made 2m cables for
less than 5ukp.
1 pin for ground leaves 24 for CV and gate.

You can also get IDC DB25 connectors, which would allow a Cirklon to connect
over a short and tidy length of ribbon cable into another, similarly sized
unit sitting directly above it in the rack.
For example, a 3U eurorack modular.

On the question of basic CV/gate outputs - you could easily knock up a DB25
to 4 x quarter-inch or 3.5mm loom.
Or you could probably get a few 3.5mm sockets into the shell of a DB25 plug,
in the way they used to make those MIDI expanders for the Atari ST serial
port.
So putting a small number of individual CV/gate sockets on the rear panel is
not really necessary.
And dropping them solves the problem of which size and make to use.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com