Treblab followed the wireless buds trend and made the X11. Small size, lightweight and functions for sports. The housing is made entirely of glossy plastic, I wish they went for textured matte finish to give a premium look. The buttons are limited to answering calls and media playback, I wished the updated version would have volume control. The package come with total 6 eartips (3 silicon bass great for better bass, 3 expandable foam for sports), the 2 way micro usb cable (to charge both simultaneously) and a small hard carrying case.

The rated range is 15 meters, I manage to get up to 16 meters line of sight before signal degradation happens. It take roughly 80 minutes to charge from zero to hero. The battery is rated to last 125 hours on standby and 5 hours of media playback. | Calvin Pixels | Calvinpixels | TREBLAB X11 ReviewOur battery test is split into 2 ways. First, using each alone can give you 4 hours and 20 minutes at the 3rd volume on the iPhone 6. Second using both together would give you 2 hours and 30 minutes before the commander unit battery dies and you have to hop on the other piece which has additional 45 minutes of battery life. The commander unit synchronize the signal from the smartphone to itself and to the other earbud thus eats more juice. | Calvin Pixels | Calvinpixels | TREBLAB X11 ReviewPairing the 2 together is done automatically and fast, there is no waiting. 3 hours is fine by me for such portability and without tangled wires. If Treblab made a version with battery carrying case it would be great to extend the battery life. Use 4.1 bluetooth. IPX6 water resistance rating, you can wash after a dirty gym/sport activities.

Sound isolation is very good people is voice nearly muted at public area esp that annoying fat cry kid in the train this morning. Our test uses the iPhone 6 at the 5th volume usually but this IEM is powerful that I have to tone down to the 3rd volume. I’m rather surprise that Treblab didn’t included any technical specification for the X11 on their site.

Technical Specification

  • IPX4 Sweat-proof
  • Bluetooth Version: 4.1 + EDR
  • Bluetooth range: Up to 15 m
  • Frequency response: 50 Hz – 20,000 Hz
  • Operating Distance: 30 feet/10 meters
  • Talk time: Up to 6 hours
  • Play time: Up to 5 hours
  • Standby Time: Up to 125 hours
  • Charging Time: Up to 2 hours
  • Battery type: Li-ion Polymer 50 mAh
  • Impedance: 32 ohms
  • Audio sensitivity: 101.7 dBSPL

Audio quality


Pia mia – do it again
Bass pressure can be felt, powerful but well control. You can hear it fades smooth towards the end, especially the snare effect. Well bodied. Bass doesn’t eat into the vocal, there is a separation between the two.

Tiaan be ok
Low bass frequency is very energetic , you can feel the pressure in the ears. No distortion at hi volume tho do hear it at low volume. | Calvin Pixels | Calvinpixels | TREBLAB X11 Review
Silicon eartips and foan eartips included


Violinder – Raindrops
Piano/Violin tone are nice, needs more shine at the highs as is slightly muffled (some people call it “warm”). Bass drums is balance with piano/violin, neither over power the other, that’s good to indicate a balance IEM.

Ed Sheeran – Touch n Go
Guitar chords vibration can be heard well, but I feels fades to fast towards the end. Vocal is good are clear no muffling sound, overall it has the right body to it.

This IEM perform very well at the low to mid frequency especially the bass. The upper mids to highs are good but I notice they actual limit it, to prevent it from peaking or sound distorted. I would recommend this to those into sports/fitness and commuting to work. I hope to see Teblab refining the design to make it compact or extend it battery life as this is a good wireless product. | Calvin Pixels | Calvinpixels | TREBLAB X11 Review

Purchase the TREBLAB X11 Here


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