Home pro recording studio now venturing into the mastering realm.
Your song must be on a CD and I will master it to a second CD.
Mastering is a bit of a scam, because "Mastering" was for the record/vinyl world, where mastering was to keep the low end from getting too loud, cutting the record grooves too deep, causing the needle to get stuck and skip.
Modern mastering tries to add volume/loudness to your final product, by compressing the loudest high transients and bringing up the rest of the program.
I paid two mastering companies to master one of my songs and they both sucked. $250.00 down the drain. So why not learn and help others.
I don't use any plugins, running your CD through a tube channel strips, EQ and Compression. I can also do duplication.