DRONX is a special mixer designed especially for the DRONE38 module; if has 6 input channels (so you can connect two DRONE38 modules) and offers some sound processing capabilities: A tone control with bass and treble control, a distortion, and finally a dual delay with different algorithms. Two insert points allow to add up to two more audio effects to the internal signal chain. Together with the DRONE38 module(s) you get a quite nice drone synth for dense, dark soundscapes.
Of course, it can be used with any other sound sources!
(Price without VAT; for buyers inside the EU 19% VAT will be added to the shown price = 83,30 €)