All You Need To Know About The JBL C100SI In-Ear Earphones

Last Updated on 7 May, 2024 by Sourav Roy

You may be wondering why we picked the JBL C100SI In-Ear Earphones as one of the best earphones when there appears to be a successor- the JBL C200SI Earphones. If you loved the style of the C200SI models but wanted to save some money, you can acquire these earphones.

The performance is on par with JBL’s customary high standards. Other useful features of the C200SI, including Google Assistant toggle and noise cancellation, are also included. Keep reading this review to learn more about how they perform.

JBL C100SI In-Ear Earphones

Dimensions6 x 3 x 17.5 cm
Connection TypeWired
Form FactorIn-ear
Wire Length1.2mm
Driver Unit Size9mm
Microphone SupportedYes


  • Fits securely and snugly in most ears.
  • Convenient in-line remote with music and call control.
  • A 1.2-long cable makes movement easier with less risk to the wires.
  • A frequency range of 20Hz to 20K Hz ensures detailed and high-quality audio output.


  • Light and comfortable design.
  • Good sound quality.
  • Long wire length.
  • Great for all kinds of music.
  • Works well for calling and gaming.


  • Mediocre wire.
  • Ear cups don’t feel nice. (Not a good texture.)
  • Average bass.


Why You Should Buy The JBL C100SI In-Ear Earphones

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Slip-free Fit: These earphones come with three distinct ear tip sizes to accommodate different ear sizes. As such, you can wear them while running or exercising without the worry of them falling out. In terms of size, the pre-installed ear tips in the earphone are medium-sized. Meanwhile, the extra ear tips come in small and large sizes. All of the tips, regardless of size, are comfortable and well-fitting.

Better Than Average Audio: The JBL C100SI In-Ear Earphones provide better than average sound. The highs and mids are well-balanced while the lows (bass) are present without being overwhelming. This is perfect for those who enjoy a mix of genres in their music collection. If you’re strictly a bass head, however, you might want to look elsewhere, as the lows aren’t as pronounced as some would like.

In-Line Remote: The C100SI has a one-button in-line remote compatible with iOS and Android devices. The button can be used to control music playback as well as answer/end phone calls. When used with an Android device, the button can also be used to access Google Assistant for extra convenience.

Isolates Music From Background Noise: Though not specifically said to have passive isolation, these earphones perform a good job of blocking out unwanted noise from the outside world. This is owing, in part, to the snug fit of the ear tips as well as the C100SI’s in-ear design. As a result, you can better immerse yourself in your music.

Noise Cancellation Microphone: In terms of call quality, the C100SI has a noise-cancelling microphone that does a commendable job of cutting out background noise. This is perfect for those who take a lot of calls in noisy environments such as busy streets or crowded offices.

Recommended Reading: Headphone Buying Guide- How to Find the Perfect Headphones?

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Notes About The Issues

Overall Build Quality Needs Improvement: Build quality is not as good, but the upsides should be enough for you to overlook the issues. Considering that JBL is a quality brand, you’ll still get some level of durability that can last you several years. It would have been better if the brand at least used an L-shaped jack instead of a straight one, though.

Recommended Reading: How To Make Your Earphones Last Longer: The Do’s and Don’ts

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Frequently Asked Questions

Does it support iPhones?

You can use these earphones on an iPhone 6s or an older model. Although, if you want to play on newer iPhones, you’ll have to invest in a converter.

How is the call quality?

We think that the call quality is pretty good, especially since the mic offers a little bit of noise cancellation.

How many colours are available?

You get to choose from three colours.

Recommended Reading: How to use earphones without damaging your ears?

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So, are the JBL C100SI In-Ear Earphones worth being considered one of the best, despite being really old? We think so. While they may not have the best build quality, they make up for it in other areas, such as audio quality, comfort, and call quality. If you can find them at a discounted price, then don’t hesitate to give them a try.

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To see how much they cost right now and which stores are selling them, you can check out our listing of the 9 best earphones in India under Rs 1000.

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