The JBL PartyBox On-The-Go is okay for music. It has a warm sound profile when the Bass Boost setting is enabled, and the extra boom in the high-bass range may please fans of bass-heavy genres like EDM. The mid-range is fairly well-balanced, so vocals and lead instruments are reproduced accurately, but the higher frequencies of these same instruments may sound dark and veiled due to the underemphasized treble range. While it can get loud, there's quite a bit of compression present at max volume. Its directivity is poor, so the soundstage is perceived as narrow, though it can play stereo content, which feels more immersive. Unfortunately, it struggles to produce a thumpy low-bass and it lacks an EQ for adjusting its sound profile, but its Bass Boost feature may help with bass production.