MIDI to Audio Service Have a MIDI sequence you’d like to route through a hardware synth? Send a MIDI file and get an audio recording sequence sent back to you within 24 hours. No fees, no signup. Simply fill out the audio request form below and attach your MIDI file. Choose your Synth Prophet 6Waldorf BlofeldEMU Orbit 3 Choose your audio sequence ARPPadsBassLead Attach your MIDI File (1 Sequence / No longer than 32 bars) Email to Send Audio to: I'd like to be added to the Spectralplex mailing list and get notifications of new synths added.