ThieAudio Monarch MKII IEM vs TRN - MT4 Pro IEM - Black / 3.5mm / Mic
Every tracked fact about the two, side by side - prices, history lows, ratings and measured tuning. No verdict: which one to buy is the visitor's decision, always.
ThieAudio Monarch MKII IEM
ThieAudio
Lowest ever ā¹95,714 on Thursday, 24th Sept, 2026
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4.9 4.9 Ā· 21 reviews
Full prices & history
TRN - MT4 Pro IEM - Black / 3.5mm / Mic
TRN
Out of stock at every tracked store
Lowest ever ā¹1,990 on Friday, 18th Sept, 2026
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4.5 4.5 Ā· 2 reviews
Full prices & history
Measured tuning, side by side
Both curves are real community measurements (gold: ThieAudio Monarch MKII IEM Ā· ink: TRN - MT4 Pro IEM - Black / 3.5mm / Mic). Each is level-aligned to its own 200 Hzā1 kHz mean, so rig offsets don't skew the comparison.
ThieAudio Monarch MKII IEM
TRN - MT4 Pro IEM - Black / 3.5mm / Mic
Tuning distance±1.32 dB RMS92% match - Very close. Computed on a shared 40-point log grid, 20 Hzā10 kHz. A measurement-space fact, not a promise two ears agree.
What a curve cannot seeBuild, driver QC unit-to-unit, comfort, isolation, accessories, warranty and resale value sit outside the graph - usually what the pricier one is charging for.
The decision, factually
Cheaper right nowThieAudio Monarch MKII IEMLowest current price across all tracked stores.
Deepest discount ever seenTRN - MT4 Pro IEM - Black / 3.5mm / MicFrom each product's own recorded price history.
This page reports facts and expresses no opinion on which to purchase.