Does Amarra improve sound quality using hard drive

Newbe question, does Amarra or Pure Music improve the sound quality when using an external hard drive or USB drive conected to a digital player - Bryston BDP-1? I converted all of my music to the apple lossless format. Do you prefer Amarra or Pure Music?
Amarra/Pure Music work as a plug in application that displaces iTunes music playback engine. It would not work with a custom built music server like the Bryston.
Pure Music and Amarra are software designed to run on Apple's OSX platform. If you are not using OSX, then you cannot use either.
Ps i prefer Audirvana Plus

Despite buying all 3 even Amarra at over 500 bucks