
Sony Ultra Lightweight Earbuds
Score: 72/100
Sony MDR-EX155AP
Score: 78/100Rankings

The Sony MDR-EX155AP is an affordable wired in-ear earbud with balanced audio, lightweight construction and inline controls, aimed at casual listeners and gamers. It lacks advanced features such as ANC, water resistance and robust cable durability.

The Sony MDR-E9LP Ultra Lightweight In-Ear headphones are a budget-friendly wired earbud with 13.5 mm drivers, weighing only 6 g. They deliver balanced sound with notable bass, passive noise isolation, and broad device compatibility, but lack modern features like a microphone, controls, or water resistance.
| Attribute | ![]() | ![]() |
|---|---|---|
13.5 mmbest | 9 mm | |
18 Hzbest | 5 Hz | |
22,000 Hz | 24,000 Hzbest | |
104 dBbest | 103 dB | |
16 Ωbest | 16 Ωbest | |
| ↓ lower better | 6.01 g | 3.12 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(5) | ||
Driver Size (mm) | 13.5 mm | 9 mm |
Frequency Response (Low) (Hz) | 18 Hz | 5 Hz |
Frequency Response (High) (Hz) | 22000 Hz | 24000 Hz |
Sensitivity (dB) | 104 dB | 103 dB |
Microphone | false | true |
Build & Design(1) | ||
Weight (g) | 6.01 g | 3.12 g |
Battery & Power(1) | ||
Charging Port Type | 3.5 mm | 3.5mm TRRS |

Products in the top-left offer the best value (high score, low price).

Professional reviewers note that while the MDR-E9LP lacks modern conveniences such as ANC or wireless connectivity, its neodymium drivers and open-air design give it a surprisingly balanced and bass-rich sound for a budget model.
Everyday users appreciate the ultra-light weight, comfortable fit, and solid bass, often citing years of reliable use. The most common complaints revolve around the fragile 3.5 mm plug, lack of a mic or controls, and occasional fit issues during active use.

“Best non-noise-cancelling earbuds I've tried”

“Jack becomes loose after a few weeks”

“"These things are crap. Lasted three months. Don't buy them."”




Reviewers commend its balanced sound and comfort at a sub-$30 price, but note limited durability and lack of premium features.
Users appreciate the decent sound and comfort, especially for gaming, but report fragile cables and mediocre mic performance.