Short answer: the FAAEAL Tulip. It ranks #740 of 1291 in-ear headphones by sound quality, rated 3.6/5, at $107; the Sennheiser IE 40 Pro ranks #817, rated 3.5/5, and costs $109, so there is little reason to consider the other one.
The case for the FAAEAL Tulip: A single 10mm dynamic IEM with a bass-heavy, Harman-like tuning and full sub-bass to 20 Hz (score 69 across four measurements). The catch: Treble sits about 3.1 dB above target, so it can sound bright.
What the Sennheiser IE 40 Pro does well: Oratory1990’s measurement shows bass 1.0 dB and low mids 1.4 dB above target, a gentle warmth that suits relaxed listening, and the preference score of 67 is acceptable. Watch for: Presence is 4.5 dB under target across 3 to 6 kHz, with a 6.4 dB dip near 3.1 kHz, so vocals and guitars sound recessed and detail is dulled.
Buy the FAAEAL Tulip. It is rated higher for sound quality than the Sennheiser IE 40 Pro and costs less, so only choose the other one for a particular feature it does better.
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A single 10mm dynamic IEM with a bass-heavy, Harman-like tuning and full sub-bass to 20 Hz (score 69 across four measurements).
Amazon $107.00 eBay
Oratory1990’s measurement shows bass 1.0 dB and low mids 1.4 dB above target, a gentle warmth that suits relaxed listening, and the preference score of 67 is acceptable.
Amazon $109.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| FAAEAL Tulip | Sennheiser IE 40 Pro | |
|---|---|---|
| Price | $107.00 | $109.00 |
| Ranked | #740 of 1291 in In-Ear Headphones | #817 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 14 ohms | 20 ohms |
| Sensitivity | 110 dB +/-3 dB | 115 dB SPL/V |
| Harman Preference Score | 69 (median of 4 squig.link measurements, calibrated to AutoEQ) | 67 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.17 dB standard deviation | 2.94 dB standard deviation |
| Tonal Tilt | -0.53 (negative is warmer, positive brighter) | +0.03 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-5.1 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 18kHz (Manufacturer specified) |
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