Universal Audio Apollo x4 with UAD Analog Classics Pro Useful Arts or a stereo keyboard output

or a stereo keyboard output plus a mic

Controls Microtubes Engine’s output volume

You can use this to freely control the speed of the rotary speaker simulation

It’s arguably the best multimode filter design around

Universal Audio Apollo x4 with UAD Analog Classics Pro Useful Arts or a stereo keyboard outputCreate with the worlds most powerful desktop audio interface. Record and mix larger sessions and hear every detail with the next generation of UAs Apollo x4 interfaces, featuring highest resolution audio conversion, four Unison mic preamps, and QUAD Core DSP processing letting you record in realtime through UAD plug ins from Neve, Manley, Avalon, SSL, and hundreds more. Trusted by top artists and producers the world over, Apollo x4 levels up your