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Boult Audio ProBass Curve Overview


Boult Audio is a little-known firm providing its audio merchandise within the Indian market, together with a variety of wired and wi-fi earphones, headphones and even soundbars. The Twin Pods, which we examined some time again, turned out to be a reasonably first rate budget alternative to Apple’s AirPods, particularly for the market value. At present, we’ll be testing the Boult Audio ProBass Curve, which is a pair of wi-fi neckband earphones that packs in loads of options at a pocket-friendly on-line value of simply Rs. 1,499.  

This can be a follow-up mannequin to the unique Curve, which has now been discontinued in accordance with the corporate. The brand new mannequin, which has ‘ProBass’ added to its title, appears bodily an identical to the older one. It will get an improve with Bluetooth 5 (versus 4.2) however does not have a vibration motor within the neckband, which is in all probability for the perfect – extra on that later. Ought to this be your subsequent funds decide? Let’s discover out.

Boult Audio ProBass Curve design and specs

The packaging for the Boult Audio ProBass Curve is not nice, however when you get to the precise earphones, the end is best. Construct high quality remains to be strictly common, with plastics that really feel a bit low-cost. It is out there in numerous colors, comparable to a Pink/Black, Pink/Blue and even an all-black trim. The neckband could be very versatile and snaps again into form even when twisted and turned to excessive angles. The earbuds are hooked up to wires that run alongside the size of the neckband, and you’ll alter the quantity of slack.

The ends of the neckband terminate in two plastic modules, which maintain the battery and the playback controls. The left module has a flap-covered Micro-USB port, the microphone, battery LED, and three buttons for energy and quantity management. As we said earlier, the newer mannequin does not have a vibration motor for alerts, which the older Curve mannequin did. 

The Boult Audio Professional Bass Curve appears good and does not weigh a lot


The earbuds themselves are fairly mild due to their plastic housings, and so they have a low profile so they do not stick out of your ears. The silicone ear ideas are comfy and supply good isolation from ambient noise. You get two additional pairs of ear ideas in numerous sizes, along with the pair that is pre-attached. There’s additionally a Micro-USB charging cable within the field. 

The outer sides of the earbuds are magnetic, so you’ll be able to snap them collectively when sporting the band round your neck. These magnets are solely to maintain the earbuds in place, and there is no additional performance comparable to pausing your music.

The drivers within the ProBass Curve characteristic neodymium magnets. This headset is powered by Qualcomm’s CSR8635 Bluetooth chip which makes use of Bluetooth 5 for connecting to your supply units. It helps Qualcomm’s cVc noise cancellation expertise for voice calls, however solely the widespread SBC Bluetooth profile for streaming audio.

The chip helps multipoint connection, and so the ProBass Curve can be paired with two units directly. Nonetheless, there have been occasions when the earphones would refuse to hook up with the second machine. The corporate hasn’t detailed the frequency vary that the drivers can deal with. The machine itself is IPX5 rated for moisture and sweat resistance, which is helpful. 

Boult Audio ProBass Curve efficiency and battery life 

The ProBass Curve has a really comfortable match, which is one thing we instantly preferred. We barely felt the earbuds in our ears, and the neckband is extraordinarily mild too, making this headset comfy to put on even for lengthy listening stretches. The vibration motor on the earlier mannequin was very harsh and rattled the band uncomfortably each time we switched it on or after we received calls and messages, so it is a good factor it has been dropped from the ProBass mannequin. You may hear voice prompts by the headset when a tool connects to it and whenever you swap it on or off. 

Boult Audio Curve band ndtv boultThe controls on the Boult Audio ProBass Curve are simple to succeed in and use


The Boult ProBass Curve is tuned to ship punchy bass, and that is one space through which it delivers very nicely. Tracks comparable to Lock Doh by Giggs characteristic tight and managed bass, with a satisfying kick. There is no distortion even at full quantity. Vocals are wealthy and all the time sound like they’re coming from entrance and centre. The mid vary basically is first rate, however advanced tracks comparable to Queen’s Bohemian Rhapsody may be an excessive amount of for the Curve to deal with, because the highs and the low finish overpower the various background devices. Highs additionally sounded a bit screechy at full quantity on this observe, though this is not a constant difficulty with others. 

The older Curve mannequin, which now we have some expertise utilizing, misplaced connectivity intermittently, which induced audio to chop out each jiffy. It is exhausting to inform what induced this, however we noticed it when utilizing the machine paired with a number of totally different units together with a OnePlus 7 Pro (Review) and an iPhone XR (Review), and even a MacBook Air. Fortunately, we did not face this difficulty with the new ProBass Curve mannequin. We additionally discovered it to have good vary, and we did not face any connection points even with small obstacles between the headset and our supply machine. 

One factor we observed was that with the intention to get good bass response, we wanted to fiddle round a bit with the earbuds until we received a superb seal. Merely popping them in our ears did not assure a superb match. The controls are simple to seek out and grasp. A protracted-press on the quantity up button skips the observe whereas the identical gesture on the quantity down button takes you to the earlier observe. Nonetheless, because the energy button doubles up because the play/pause button, there is no approach to activate your telephone’s voice assistant.

Boult Audio Curve earbuds ndtv boultThe earbuds on the Boult Audio ProBass Curve supply good passive noise isolation


The ProBass Curve robotically connects to the final paired machine it detects. For a brand new connection, you may want to carry the ability button for greater than 5 seconds, until the sunshine alternates between blue and pink.

Name high quality is fairly good too. We did not have any audio points and neither did the particular person on the opposite finish, even after we had been in noisy environments comparable to a prepare station. The passive noise isolation from the ear ideas is excellent, however audio does leak a bit for those who push the quantity past 80 %.

Boult Audio guarantees battery lifetime of 8-10 hours on a single cost for the ProBass Curve, and in our utilization, we simply managed to get round Eight to eight.5 hours on common. Charging the battery utilizing a laptop computer’s USB port took slightly over two hours. The ability LED is the one indication of the quantity of cost left. It blinks blue when the extent is above 20 %, and pink when it dips under that.


The Boult Audio ProBass Curve replaces the outgoing mannequin on the similar on-line value of about Rs. 1,499, although we have seen it promote for rather less at occasions. For that value, this machine has so much going for it. It is sweatproof, mild and cozy, and has good battery life. The mids are slightly weak, however it produces clear and punchy bass. It is actually not essentially the most premium-looking machine and it does not really feel like one both. Lastly, the eartips want a little bit of fiddling earlier than you will get a superb seal. 

General, for those who’re searching for a mild, cheap pair of Bluetooth earphones with good bass and moisture resistance, then the Boult Audio ProBass Curve is an honest decide.  

Value: Rs. 1,499 (on-line)


  • IPX5 sweatproof 
  • Mild and cozy 
  • Tight, punchy bass 
  • Engaging value
  • Respectable battery lifea


  • Barely repressed mids
  • Strictly common construct high quality 

Rankings (out of 5)

  • Design: 2.5 
  • Audio High quality: 3
  • Battery life: 3.5
  • VFM: 4
  • General: 3




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