The Expert Sleepers Disting mk.4 has a pair of industry standard MIDI ports – one input, one output – which can be used to connect to a huge variety of external equipment.
A passive breakout module which exposes the MIDI ports as 5-pin DIN sockets is now available
MIDI “Low-Voltage Signaling”
When MIDI was first conceived, standard logic circuits ran at 5V, and the initial hardware reference designs worked on this assumption. However, there is nothing in the MIDI standard that actually requires a specific voltage, since it operates as a current loop via an opto-isolator.
Nowadays it is much more common for logic to run at 3.3V or lower. The MIDI Manufacturers Association has now released a reference hardware design based on 3.3V, which they call the “Low-Voltage Signaling” standard, and it is this that the disting mk4 uses.
The disting is therefore fully compatible with any device that adheres strictly to the MIDI specification, but may not be with devices that play fast and loose with the spec and assume 5V.
Controlling the disting mk4 via MIDI
In addition to any algorithm-specific MIDI implementation, there are common MIDI controls shared by all algorithms. These are as follows.