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Side-by-side comparison — scores, specs and which one fits your setup.
Specs comparison
Analysis
The FiiO FH9 scores 8.2/10 with 16Ω impedance and 107dB sensitivity. At 16Ω, it drives well from most phones without an external amp.
The FiiO FD5 scores 8.3/10 with 32Ω impedance and 111dB sensitivity. At 32Ω, it can be driven directly without extra hardware.
Based on our scoring, the FiiO FD5 scores higher overall. However, the right choice depends on your full audio chain — use our analyzer to see which fits your actual setup.
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A high headphone score doesn't mean your audio sounds great. Your DAC, amp or source might be the real bottleneck.