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Side-by-side comparison — scores, specs and which one fits your setup.
Specs comparison
Analysis
The Audio-Technica ATH-A900Z scores 8.2/10 with 40Ω impedance and 100dB sensitivity. At 40Ω, it drives well from most phones without an external amp.
The Sennheiser HD 600 scores 8.8/10 with 300Ω impedance and 97dB sensitivity. At 300Ω, it also benefits from amplification to perform at its best.
Based on our scoring, the Sennheiser HD 600 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.