Music is a world in itself. Nothing can beat the comfort of a headphone while travelling. It keeps you away from constant blatter around you and helps you to concentrate more on yourself. So, carrying a headphone or an earphone is perfectly cool.But in among so many headphones, grabbing a headphone that perfectly suits your ear may be a struggle. To choose an ultimate headphone, I have set few parameters that will assist you for sure.1. Know The Difference Between Headphone And An EarphoneHeadphones are the bigger accessory as compared to earphone and usually hangs around peoples neck nowadays. A bigger headphone doesn&rsquo;t always guarantee a better sound output, it all depends on what is inside it and what company tag it bears. Moreover, it offers more fun options like wireless/Bluetooth headphones. Usually, headphones cost more than the earphones and don&rsquo;t forget the space it will occupy in your luggage bag while travelling, especially on long trips.Earphones or earbuds, whatever you call it, these are the tiny ones that suitable fits in your ears and pocket. It is best for people who don&rsquo;t have much space to manage their belongings and still don&rsquo;t want to miss the recent playlist.Due to its size, earphones generally doesn&rsquo;t cost much and can offer you some decent sound quality. But at the same time, earphones are prone to get damaged.2. Test the Frequency ResponseThe normal hearing frequency range of a human ear lies between 20 to 20,000 Hz and hence, you will find most of the headphones ranging in this frequency metre only. Just in case, you come across some headphone that boasts to engrave a frequency above than 20,000 Hz, trust me, it will of no use. And for the people who are obsessed with intense bass, pick a headphone that produces a frequency below 20 Hz.3. Sound Isolation/CancellationNobody loves to turn up the volume in order to cut down the outside noise and I am pretty sure about it. Also, raising the volume above than a certain level is not good for your ears. Expecting a headphone to block outside noise is no big deal, but still, the less expensive ones don&rsquo;t offer this comfort.So, go with such headphones that comes with sound isolation and at the same time, save on your battery too. Don&rsquo;t forget about the pricing, added features are always not free. Headphones with sound isolation are obviously more expensive than the one which lacks it.4. Impedance levelEvery headphone uses the electric current of the gadget with which it is connected. You should always match the impedance of the headphones to the audio equipment you are using. This will save you from raising the volume to tap the best output. A headphone with lower impedance means that it will generate higher volume at the same electric input and such headphones are apt for our regular smartphones and laptops. High impedance headphone is best for Dj&rsquo;s and mixers.5. Rely on Your EarsWhat may come, in the end, you have to test any headphone or earphone by plugging it in your ear and test it against your list of expectations. An expensive headphone is not the hallmark of the ultimate sound. Some headphone may suit some and the same may not go well with you. So, after considering every point mentioned in this article, you simply have to try them out yourself and take a call.Let me know about your next pair of headphone and I can help you with the best track that will turn up the heat.