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Sennheiser HD 820 vs Thieaudio Monarch Mk2

Side-by-side comparison — scores, specs and which one fits your setup.

Sennheiser HD 820
8.7
/ 10
Over-earReference
HIGHER SCORE
Thieaudio Monarch Mk2
9.3
/ 10
IEMReference

Specs comparison

8.7/10
SCORE
9.3/10
75Ω
IMPEDANCE
15Ω
96dB
SENSITIVITY
98dB
No
NEEDS AMP
No

Analysis

The Sennheiser HD 820 scores 8.7/10 with 75Ω impedance and 96dB sensitivity. At 75Ω, it drives well from most phones without an external amp.

The Thieaudio Monarch Mk2 scores 9.3/10 with 15Ω impedance and 98dB sensitivity. At 15Ω, it can be driven directly without extra hardware.

Based on our scoring, the Thieaudio Monarch Mk2 scores higher overall. However, the right choice depends on your full audio chain — use our analyzer to see which fits your actual setup.

Own one of these headphones?

A high headphone score doesn't mean your audio sounds great. Your DAC, amp or source might be the real bottleneck.

Analyze my setup →HD 820 details →Monarch Mk2 details →

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