1) Abnormally tense or tonic 2) Digital audio 
First launched in 1999, Epitonic is a source for independent music across multiple genres from both signed and unsigned artists. Featuring free and legal MP3 downloads, radio streams, and many full album streams, at its peak it amassed content from more than 400 independent labels and represented a diverse array of artists helping them to further ...
subjected to excessive strain; overstrained
(ep″ĭ-ton´ik) abnormally tense or tonic.