Voxengo GlissEQ

I've tried every mastering eq and limiter, and find Elephant and Gliss are absolute beasts in mastering.  Elephant is easily as transparent as the L2 or ProL, and is priced super competitively.  Also, I find the numeric 'crest factor' readout to be very helpful.  Gliss has a great analyzer and is very aesthetic even for deep mid range cuts.  These two get regular use in my mastering studio.

Jeremy Cox Mastering

I've been using at least one of your plugins on all of my mastering projects for years now.  Just want to say thanks.  I've just discovered Soniformer.  I was able to *mostly* rescue one of the worst mixes I've ever gotten.  And without horrible artifacts either.  Keep up the good work.  I'm sure one day I'll own all of your plugins.  Your prices make my hobby-business possible.

Jon at Transparent Mastering

I am so thankful for the tools that you have made.  I am able to achieve control over sound that is simply impossible with "two-knob plugins." They certainly have their place, but I prefer to understand the character of different flavors of sound and mix/transform music with conscious intention, just as songwriters do so when creating their work initially.  Your tools enable me to express what I see/hear in my mind's eye/ ear.

CodingMusica.com