Thieaudio Monarch MKIV vs OpenAudio Siren

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.

Not this pair? Swap either side:

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Open head-to-head

Thieaudio Monarch MKIV (Like New) - Stellashot ThieAudio Now ₹98,530 at MusicTeck Lowest on record ₹97,806 on Thursday, 22nd Oct, 2026 Full prices & history

OpenAudio Siren open Now ₹20,963 at HiFiGo Lowest on record ₹20,809 on Thursday, 22nd Oct, 2026 Full prices & history

What is being compared

Both sides are in-ear monitors. The rows below are the facts each store publishes for this shelf - driver arrangement, impedance, sensitivity, plug and connectivity. A dash means the listing does not state that spec.

Spec ThieAudio open

Connectivity Wired Wired

Connector — 2-pin 0.78mm

Plug 3.5mm/4.4mm 3.5mm/4.4mm

Measured tuning, side by side

Both curves are real community measurements (gold: ThieAudio · ink: open). Each is level-aligned to its own 200 Hz–1 kHz mean, so rig offsets don't skew the comparison.

ThieAudio open

Tuning distance ±1.30 dB RMS 92% match - Very close. Computed on a shared 40-point log grid, 20 Hz–10 kHz. A measurement-space fact, not a promise two ears agree.

Bass · 20–250 Hz ThieAudio +0.4 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means ThieAudio plays louder there on the measured files; minus means open does.

Mids · 250–2,000 Hz ThieAudio +0.3 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means ThieAudio plays louder there on the measured files; minus means open does.

Treble · 2,000–10,000 Hz ThieAudio +0.4 dB Average level difference in this band, both curves aligned to their own 200 Hz–1 kHz mean. Plus means ThieAudio plays louder there on the measured files; minus means open does.

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.

Price over the last 30 days

Daily lowest price across every tracked store, from the site's own price history. The line is one product's own range - the two cards are not drawn to a shared scale.

Thieaudio Monarch MKIV (Like New) - Stellashot Now ₹98,530 at its 30-day median Lowest on record ₹97,806 on Thursday, 22nd Oct, 2026 In stock at 1 tracked store

OpenAudio Siren Now ₹20,963 at its 30-day median Lowest on record ₹20,809 on Thursday, 22nd Oct, 2026 In stock at 2 tracked stores

Price gap right now ₹77,567 79% of the dearer one's price.

Stores with it in stock 1 vs 2 Active stores carrying each one right now - more stores usually means easier replacement and a steadier price.

The decision, factually

Cheaper right now OpenAudio Siren Lowest current price across all tracked stores - ₹20,963 vs ₹98,530.

Deepest discount ever seen OpenAudio Siren From each product's own recorded price history.

This page reports facts and expresses no opinion on which to purchase.

Keep going

EQ preset: ThieAudio EQ preset: open All IEMs More comparisons