If you want your track to sound professional the important last step is mastering. I have the experience and gears to make it sound professional. Depending on the genre or your preference I can make a Loud but still crystal clear mastering or a more dynamic one , with character and quality ready to be signed or played by a radio for only 5$
The tracks should be Wav preferably or if mp3 320kbps . Before sending do not put any limiter/compressor on the master channel and keep at least 3dB headroom.
The track will be mastered within 12-24 Hours ,DeliveryFormat: Wav or Mp3 320kbps
Top notch analog and all the best software plugins from Waves,Fabfilter, Sonnox, Cytomic,Izotope .