Sound & Specs Comparison
Both IEMs are widely regarded in the audiophile community. See how they differ in terms of sub-bass response, upper mids, clarity, and overall tonality. Spider charts and rating breakdowns included.
Facts, details, stuff.
General Info | Monarch Mk4 | Cantor |
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Brand | Thieaudio | AFUL |
Country | China | Taiwan |
IEM Description | The Monarch MKIV is the latest evolution in Thieaudio’s Signature Series, now featuring a tuning switch that lets users toggle between two distinct sound profiles: STANDARD mode offers a studio-neutral tuning with clean mids and refined treble. RUMBLE mode adds +3dB sub-bass for a warmer, more powerful low-end response. It sports a lightweight T6 aluminum shell, an advanced 4-way crossover system with 9 passive components, and the upgraded IMPACT2 isobaric dual-subwoofer setup for tight, impactful bass. Treble is handled with precision thanks to improved EST driver integration for smoother and more extended highs. The MKIV also introduces the new Chocolate modular cable system, offering both 4.4mm balanced and 3.5mm unbalanced terminations with silver-plated OFC wires. A versatile flagship IEM combining technical excellence with customizable tuning. | The AFUL Cantor combines technical precision with musicality in a hybrid design. Featuring a dynamic driver for powerful bass and multiple balanced armatures for clean mids and sparkly highs, it delivers a spacious soundstage with excellent separation. Tuning leans slightly toward a balanced-bright signature, making it a solid choice for detail lovers who still want some low-end punch. |
Price Level | 1.000 – 2.000 | 500 – 1.000 |
Housing & Driver | ||
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Driver Config | Tribrid | Multi-BA |
Driver Types | Dynamic Driver + Balanced Armature + Electrostatic | Balanced Armature |
Shell Material | Aluminium with 2 faceplates options | – |
Cable | – | 4Braid 5N OFC Cable |
Technical | ||
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Freq Range | 10Hz – 44kHz | – |
Impedance (Ω) | 10/9 | 20 |
Sensitivity (dB) | 100 | 106 |
Crossover | 4-way crossover with 4 sound tubes+2 ultra-high frequency drivers+4 high frequency drivers+2 mid frequency drivers+2 low frequency drivers | RLC Network Electronic Crossover |
Platform Info | ||
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Comments | 2 | 1 |
Visit Count | 443 | 128 |
External Reviews | 1 | 1 |
// Nothing to compare yet.
Low-frequency extension on Cantor feels e more natural and authoritative, while Monarch Mk4 lacks some reach (8.5 vs 7.5). It enhances basslines with a more energy and grip, giving them a livelier feel compared to Monarch Mk4 (9 vs 8). The bass in It feels a more physical and textured, with improved rumble and body compared to Monarch Mk4 (8.5 vs 8). In the upper mids, It sounds a clearer and more articulate, highlighting vocals and lead instruments better than Monarch Mk4 (8 vs 7.5). The treble on It is a more nuanced and refined, especially when it comes to cymbals and ambient elements (8 vs 7.5). It creates a a wider soundstage, giving instruments more space and a better sense of placement than Monarch Mk4 (8 vs 7). It extracts low-level details a more effectively, helping subtle nuances emerge clearer than on Monarch Mk4 (8.8 vs 8). In complex arrangements, It separates layers a more distinctly, preventing overlap that Monarch Mk4 occasionally suffers (8.3 vs 7.5). Notes played through Monarch Mk4 feel n weightier and fuller, giving a more satisfying impact than those from Cantor (8.5 vs 7.5). Timbre on It sounds d more realistic and natural, whereas Cantor feels slightly more artificial or colored (9 vs 7.5). Cantor achieves a better tonal neutrality, avoiding colorations present in Monarch Mk4 (8.8 vs 8).
Monarch Mk4 | Cantor | |
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Sub Bass | 7.5 | 8.5 |
Bass | 8.0 | 9.0 |
Bass Feel | 8.0 | 8.5 |
Lower Mids | 8.5 | 8.5 |
Upper Mids | 7.5 | 8.0 |
Lower Treble | 7.5 | 8.0 |
Upper Treble | 7.5 | 7.5 |
Sound Stage Width | 7.0 | 8.0 |
Detail | 8.0 | 8.8 |
Layering | 7.5 | 8.3 |
Masking | 8.0 | 8.0 |
Note Weight | 8.5 | 7.5 |
Slam | 8.5 | 8.5 |
Sibilance | 8.5 | 8.5 |
Timbre Color | 9.0 | 7.5 |
Tonality | 8.0 | 8.8 |
Texture | 8.0 | 8.0 |
// Nothing to compare yet.