(Thanks to Tekfusion Technologies for loaning the Twinwoofers for this review.)

Tekfusion is a Bangalore-based IEM maker whose range of ‘phones is available from several e-tailers. Their Twinwoofers are lightweight all-metal in-ear ‘phones that come in two finishes – black chrome and white chrome.

The build quality of the Twinwoofers Black Chrome loaned to me for this review was sturdy but not spectacular. The strain relief at the base of the all-metal housings was adequate and the ‘phones come with a straight 3.5mm gold-plated connector.

The simple black paper packaging, which states the ‘phones are “Designed in India, Made in China”, included a shirt clip, three pairs of ear-tips of different sizes, two pairs of triple flange ear-tips and a smart black pouch. The medium sized ear-tips worked just fine for me, providing a more than adequate seal and isolation even in noisy environments.

On the plus side, these ‘phones have one of the most tangle-resistant cables I’ve ever come across. I’d roll up the cable after my daily commute and stuff the ‘phones into my pocket and they’d emerge hours later with virtually no tangles in the cable and ready to use within seconds. Microphonics, or the annoying rustling and thumping sounds caused by the cable brushing against clothes, was never a problem when the music was playing.

If you’re looking for earphones that you can use to answer calls and control music playback on your smartphones, these aren’t for you (though Tekfusion has the more expensive Twinwoofers M with in-line controls and an echo-cancelling microphone).

When I first began listening to the Twinwoofers on my Samsung Galaxy S3 playing MP3s ripped at 320 kbps through Poweramp, I was underwhelmed by the bass.  

The bass, to my ears, lacked the heft and slam of the Skullcandy 50-50 (which has become my go-to in-ear ‘phones these days.) But the sound changed rather dramatically after just a few days of usage as the bass firmed up quite a bit. It still lacked slam but was fast, tight and articulate.

After they were burned in over several days, the Twinwoofers had a nicely balanced sound and handled with aplomb a wide variety of music thrown at them, from Kayne West and Jay-Z’s “No Church In The Wild” to Queen’s “Love Of My Life” to Nusrat Fateh Ali Khan’s “Shahbaaz Qalandar”.

(BTW, Tekfusion’s website even has a handy guide for burning in ‘phones using your laptop or PC that’s available here.)

I was especially struck by the Twinwoofers’ ability to retrieve detail. Even in noisy environments like Delhi’s streets, these ‘phones constantly surprised with their ability to pull out details even on busy tracks with layered sounds like Crowded House’s “Weather With You” and Peter Gabriel’s “Digging In The Dirt”.

Paired with my larger rig comprising a HP ProBook laptop playing CD-quality and high-res FLAC files through a Micromega MyDAC to a Denon PMA-717 amplifier, things got even better – the soundstage became much wider and the overall sound was more dynamic and punchy.  And they can be driven rather loud without losing their grip on a dynamic track like a high-res version of Daft Punk’s “Contact”.

The suggested retail price for the Twinwoofers is Rs 1,550 (about $25) but it’s available for a few hundred bucks less from several Indian e-tailers. At that price point, I have no hesitation recommending these ‘phones.