Short answer: both are discontinued, so this only matters if you are buying used, though neither ranks well in its class. Used, the Final Audio Heaven IV is the better pick: it ranks #1051 of 1253 in-ear headphones by sound quality (rated 2.6/5), against #1249 (rated 1.0/5) for the Final Audio Heaven III. Both are rated below 3.0/5 among the 1253 in-ear headphones; for better sound, the Truthear Nova ranks #2 at $169.99.
The Final Audio Heaven IV is the better-sounding choice. Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. Watch for: Discontinued, so it is mainly found used.
Why pick the Final Audio Heaven III: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. Watch for: Measures far from the Harman target (preference score 17), so most listeners will hear it as colored; EQ can correct much of this.
Buy the Final Audio Heaven IV only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Truthear Nova instead.
Still deciding? The full Headphones rankings cover every ranked option.
Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural.
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A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
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Specifications Side By Side
| Final Audio Heaven IV | Final Audio Heaven III | |
|---|---|---|
| Price | $169 Discontinued | $200 Discontinued |
| Ranked | #1051 of 1253 in In-Ear Headphones | #1249 of 1253 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Connection | Wired | Wired (3.5mm) |
| Driver Type | Balanced armature | Balanced Armature |
| Drivers | 1 x balanced armature | 1 Balanced Armature |
| Impedance | 16 ohms | - |
| Weight | 0 lbs (16 g) | - |
| Harman Preference Score | 56 (measured by oratory1990, via AutoEQ) | 17 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 3.31 dB standard deviation | 6.13 dB standard deviation |
| Tonal Tilt | -0.54 (negative is warmer, positive brighter) | -1.45 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-5.5 dB at 30 Hz) | - |
| Back | - | Closed |
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