The midbass bleed gives a very pleasant warmth to the lower mids, and male vocals have very good body and note weight. The lower treble region offers a good sense of clarity and definition when I do listen to instruments such like snare drums or violins that do also sounds crisp and lively, while the extension is on a moderate level.

The comfort is equal between the two, with a slight edge going to FiiO for their excellent rounded inner part on FD3. Mid range is cleaner and fuller in presence, more detailed and transparent yet not as thick and textured in timbre as FD3. Sound isolation is good but not perfect due to the semi open design but under normal listening conditions everything works just fine.WITH BLACK FILTER- The treble is similar with changes in notes separation being the most important stand out. Chie (Remastered) - Konstantin Wecker" and " Dreams (2001 Remaster) – Fleetwood Mac" you can really feel the the lack in bass response in the sub bass regions.

The tonality is nicely warm, bold and soft, while the level of control is pretty good when I do listen to songs like Bro Safari, UFO! The midbass are fairly pronounced, from instruments like the cross drum, up to the trumpets, while the general presentation is musical and entertaining. It's impressive how Fiio has considered the upgrade path for E7 DAC owners by integrating an iPod-style dock connector into the E9.The FiiO FD3 has the upper hand in terms of airiness and wideness of the stage, while the Final Audio B2 has a slightly advantage when it comes to the soundstage depth.