Short answer: both are discontinued, so this only matters if you are buying used. Used, the ThieAudio Oracle MKII is the better pick: it ranks #95 of 657 in-ear headphones by sound quality (rated 4.5/5), against #347 (rated 3.9/5) for the ThieAudio Oracle MKIII. If you want one new, the ThieAudio Monarch MKIII ranks #1 at $999.
The ThieAudio Oracle MKII is the better-sounding choice. The median of 11 hobbyist measurements gives it a very good Harman preference score of 79 with a 1.53 dB spread. The tradeoff: Discontinued, so it is mainly found used.
Why pick the ThieAudio Oracle MKIII: The median of 13 hobbyist measurements gives it a solid Harman preference score of 73 with a 1.87 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. The tradeoff: Discontinued, so it is mainly found used.
Buy the ThieAudio Oracle MKII only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the ThieAudio Monarch MKIII instead.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| ThieAudio Oracle MKII | ThieAudio Oracle MKIII | |
|---|---|---|
| Price | Discontinued | Discontinued |
| Ranked | #95 of 657 in In-Ear Headphones | #347 of 657 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Tribrid | Tribrid |
| Drivers | 1 x 10mm dynamic + 2 x balanced armature + 2 x electrostatic | 2 x dynamic + 2 x balanced armature + 2 x electrostatic |
| Impedance | 11 ohms | 13 ohms |
| Harman Preference Score | 79 (median of 11 squig.link measurements, calibrated to AutoEQ) | 73 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.53 dB standard deviation | 1.87 dB standard deviation |
| Tonal Tilt | -0.21 (negative is warmer, positive brighter) | -0.72 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 44kHz (Manufacturer specified) |
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Prices on this page were last checked October 12, 2026 at 4:13 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Headphones In Full
ThieAudio Oracle MKII Discontinued eBay
Pros: The median of 11 hobbyist measurements gives it a very good Harman preference score of 79 with a 1.53 dB spread. Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. Upper treble lifts about 6.4 dB for extra air and sparkle. It uses 1 x 10mm dynamic + 2 x balanced armature + 2 x electrostatic with an easy 11 ohm load.
Cons: Discontinued, so it is mainly found used. A 5.9 dB peak near 10.9 kHz can make cymbals and sibilance sound sharp.
Full ThieAudio Oracle MKII review and specifications →
| Released | Sep 2022 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.53 dB standard deviation |
| Driver Type | Tribrid |
| Drivers | 1 x 10mm dynamic + 2 x balanced armature + 2 x electrostatic |
| Form Factor | In-ear |
| Harman Preference Score | 79 (median of 11 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 11 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) |
| Tonal Tilt | -0.21 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
ThieAudio Oracle MKIII Discontinued eBay
Pros: The median of 13 hobbyist measurements gives it a solid Harman preference score of 73 with a 1.87 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. Upper treble lifts about 5.1 dB for extra air and sparkle. It uses 2 x dynamic + 2 x balanced armature + 2 x electrostatic with an easy 13 ohm load.
Cons: Discontinued, so it is mainly found used. Presence sits about 4.2 dB low with a 5.6 dB dip near 3.7 kHz, so vocals and instruments lose some bite.
Full ThieAudio Oracle MKIII review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.87 dB standard deviation |
| Driver Type | Tribrid |
| Drivers | 2 x dynamic + 2 x balanced armature + 2 x electrostatic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 44kHz (Manufacturer specified) |
| Harman Preference Score | 73 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 13 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) |
| Tonal Tilt | -0.72 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples