Short answer: the Twistura Delta. It ranks #856 of 1291 in-ear headphones by sound quality, rated 3.4/5, at $32.99; the SoundMAGIC E50C ranks #940, rated 3.2/5, at $32.99. The price gap is small enough that the sound-quality ranking should decide it.
What the Twistura Delta does well: A broadly balanced tuning with a preference score of 67 against the Harman target. The tradeoff: An uneven response, 2.3 dB standard deviation from target.
The case for the SoundMAGIC E50C: Bass from 60 to 200 Hz sits within 0.3 dB of target, so the low end is balanced rather than boomy. The tradeoff: Presence from 3 to 6 kHz is about 6.7 dB under target, with an 8.7 dB dip near 3.3 kHz, so vocals lose clarity and sound set back.
Buy the Twistura Delta. It is rated higher for sound quality than the SoundMAGIC E50C at the same price, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Headphones rankings.
A broadly balanced tuning with a preference score of 67 against the Harman target.
Twistura $32.99 eBay
Bass from 60 to 200 Hz sits within 0.3 dB of target, so the low end is balanced rather than boomy.
Amazon $32.99 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
| Twistura Delta | SoundMAGIC E50C | |
|---|---|---|
| Price | $32.99 | $32.99 |
| Ranked | #856 of 1291 in In-Ear Headphones | #940 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) | 64 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.30 dB standard deviation | 2.96 dB standard deviation |
| Tonal Tilt | -0.74 (negative is warmer, positive brighter) | -0.38 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.6 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dual-magnet dynamic driver (LCP diaphragm) | 1 x 10mm dynamic |
| Impedance | 42 ohms | 51 ohms |
| Sensitivity | 120 dB/Vrms | 102 dB/mW |
| Frequency Response | 8Hz - 21kHz | 15Hz - 22kHz (Manufacturer specified) |
| Weight | - | 0 lbs (13 g) |
| Built-in Microphone | - | Yes |
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