Recs.
Updated
AIMP is an audio player only, created by Russian main programmer Artem Izmaylov and a staff of collaborators from Russia.
It's freeware and it's available for Windows XP SP3 and newer.
There is also a build for Android 4.x and newer.
SpecsUpdate
Pros
Pro Supports audiophile-level playback quality
Other music players usually require separate plugins for this, but AIMP comes by default with the modern WASAPI (Windows Audio Session API) audio output support thus providing purest sound output unadultered by the Windows mixer (in WASAPI Exclusive mode) out of the box.
Pro DSP manager allows for sound effects
AIMP has a digital sound processor manager which lets you apply sound effects to the output audio in real-time. These effects include: echo, reverberation, Flanger, Chorus, bass, enhancer, speed, tempo, and pitch. It also has a voice remover feature for stereo audio files.