What defines the MK-312BT?
Where it fits
A strong fit for people who specifically want a current two-channel device built around the 312-style workflow.
A current interpretation of a familiar two-channel idea
The Stim-System version combines dual-channel control with Bluetooth and an integrated 2.3 Ah battery. Its appeal is less about adding the largest possible feature list and more about keeping the 312-style workflow in a current, serviceable platform.
Relationship to the ET312B
The MK-312BT should be described as a separate modern product rather than an official continuation made by ErosTek. The connection is technical and historical: later builders retained ideas associated with the 312 family while redesigning the hardware around available components and wireless control.
Who usually compares it with the ZC95?
People comparing these two devices are typically deciding between a simpler two-channel 312-style layout and a more software-oriented four-channel system. The choice is therefore mainly about architecture and control preferences, not just raw feature count.