The dspMixFx app, developed by Steinberg Media Technologies GmbH, is a free control application designed for use with Yamaha's custom-designed SSP2 DSP chip-equipped audio interfaces. Specifically compatible with the UR-RT2, UR-RT4, UR242, UR44, UR28M, and UR824 interfaces, this app offers users the ability to enjoy latency-free monitoring while utilizing renowned DSP effects like the REV-X reverb, Sweet Spot Morphing Channel Strip, and Guitar Amp Classics in conjunction with other iOS audio apps.

For seamless functionality, it is essential to note that the app functions solely as a control interface for Steinberg's USB audio interfaces. In the absence of a UR interface, the app reverts to demo mode. To fully utilize the dspMixFx app, users are advised to download and install the firmware update version 2.10 for UR44, UR28M, and UR824 interfaces.