For a series: elegance: refined grace or dignified propriety eloquence: the quality of forceful and persuasive expressiveness
Combined: Axiom Elequance Digital Amp Series (ED14.8 this model) Axiom Elogance Digital Amp Series (ED14.8 this model)
Elegant and elegance obviously refer to its clean, minimalistic yet stalwart styling while eloquent and eloquence refer to the the way it provides its smooth, clean unrelenting power.