Sunday, July 21, 2019

JBL Under Armour True Wireless Flash IEM Headphone Review

True Wireless Products are getting more and more popular. And they are becoming available for all different uses. These are designed for the active individual. Whether you are inside on your treadmill or jogging outside in the rain, JBL has you covered with their Under Armour True Wireless Flash. With an MSRP of only $169, they are also a great value!

Features and specs:

General Specifications :

Weight (g): 16

Weight (oz): 0.56

Ear tip material: Silicon

Bluetooth version: 4.2

Audio Specifications :

Driver size (mm): 5.8

Number of drivers per ear: 1.0

Driver sensitivity at 1kHz/1mW (dB): 95dB

Impedance (ohms): 14.0

Control and Connection Specifications:

Bluetooth profiles: A2DP V1.3, AVRCP V1.5, HFP V1.6

Bluetooth transmitter power: <9 .5="" dbm="" font="">

Bluetooth frequency: 2.402GHz - 2.48GHz

Bluetooth transmitted modulation: GFSK, π/4DQPSK, 8DPSK

Dynamic frequency response range (Hz): 20Hz-22kHz


Battery Type: Lithium-ion polymer (3.7V,85*2mAh)

Charging time (hours from empty): 2.0

Speed Charging time (hours): 2.0

Talk time (hours): 5.0

Maximum music play time with ANC off (hours): 5+20

Play time (hours): 5.0

The box they came in was a premium color printed box with images and specs of the IEM. Opening the box revealed well protected IEM’s held in place by custom molded foam. Also secured in the foam was the charging case. Materials used in the construction of the IEM’s was mostly plastic with some metal and rubber tips that wrapped around the IEM. The charging case was mostly metal with a cloth wrist strap. Quality of materials used was very good, as was the fit and finish. Also included was the owner’s manual, charging cord and additional rubber tips.

I loved the design of the IEM’s. The rubber tip wrapped around the end of the IEM, and had a little rubber notch that stuck out, to help hold them in place in your ears. I also liked the design of the charging case. I love the way it does double duty. It holds the IEM’s but it also holds a built-in battery to charge them. The slots for the IEM’s are magnetic, so it also holds them in place while they are being charged. The LED is red while being charged, and turns off when fully charged. Turning them on and syncing to my LG V40 was very simple and fast. Bluetooth range was also very good at 30-40 feet, depending on if there are any walls between you and your smartphone. Now lets see how they sound!


Disturbed- Sound of Silence: Piano sounded very natural, vocals had good texture, guitar was crisp. Violin had good harmonics, cymbals had nice details and dynamics. Adele- Rolling In the Deep: Guitar was very crisp and clean with good resolution. Kick drum had good impact and depth with very good authority. Cymbals and high hat were very crisp with very good resolution. Piano sounded very natural. Vocals had very good resolution to the texture and timbre. Imaging was quite good and they threw a nice sized soundstage. Junior Wells- Why Are People Like That: Bass had nice low end extension and played with authority, drums and cymbals were crisp and dynamic with very good resolution. Harmonica was very dynamic with excellent harmonics. Piano sounded very natural. Vocals were silky smooth with very good texture. Soundstage was quite big. Liquid Soul- Spam Sucker: Trumpets were smooth and dynamic without being too brassy. Drums cymbals, and high hat were really crisp and clean with good resolution. Kick drum had really good impact, low end extension and played with authority. Sax had very good dynamics, texture and woodiness of the reed.


To some things up, these are all great products.  No matter your budget, these all provide great sound for their price.  The biggest surprise was the giving much better sound than expected for their price point. The JBL Under Armor True Wireless have earned our Highly Recommended Award.  For more info and complete specs, check out their websites at