Headphones
1910s onwardsHeadphones began as a workaround. Early radio signals were too weak to drive a loudspeaker, so listeners pressed a small transducer to each ear. A century later, they are how most music in the world is heard.
Origin
The earliest sets came out of telephone and telegraph work, where an operator needed to hear a faint signal in a noisy room. Early radio inherited both the hardware and the reason.
As amplification improved, loudspeakers took over the living room and headphones became specialist equipment — for studios, for radio operators, and for listening without disturbing anybody.
The Walkman turned that around completely. From 1979, headphones stopped being what you used when a speaker was impossible and became the normal way to listen.
Open, closed and in-ear
A closed-back design seals around the ear. It keeps outside noise out and your music in, at the cost of a smaller sense of space — the sound is unmistakably happening inside your head.
An open-back design lets air and sound pass through the rear of the earcup. It usually sounds more natural and less pressurised, and it leaks in both directions — unusable on a train, excellent in a quiet room.
In-ear designs seal in the ear canal itself. Enormous isolation for the size, and the reason the whole category could shrink to something carried in a pocket.
Noise cancelling
A microphone on the outside listens to the surrounding noise. The electronics generate the exact inverse of that sound and add it to what you hear, so the two largely cancel before reaching your ear.
It works best on steady, low-frequency noise — aircraft cabins, train rumble, air conditioning — and much less well on speech, which is irregular and higher up. That is physics rather than a shortcoming of any particular product.
Why it matters more than it used to
Headphones bypass the room entirely, which removes the single biggest variable in home audio. A modest pair can deliver a level of clarity that would take a substantially more expensive speaker system in a real room.
They also changed how music is made. Producers know most listeners are on headphones or earbuds, and mixes are checked accordingly.
Names that mattered
Listed because of what they did, not as recommendations. Velorex Music did not make any of these.
Did you know?
- Early radio listeners used headphones because receivers could not drive a loudspeaker.
- Noise cancelling works far better on constant low-frequency noise than on voices.
- Open-back headphones leak sound outward — audible to the person next to you at moderate volume.
- Headphones remove room acoustics from the equation, which is why they are used for critical listening.
Remember this?
Untangling the cable before you could listen to anything. Foam earpads that crumbled after a few years. And the specific unfairness of one channel cutting out unless the plug was held at exactly the right angle.
Sources & further reading
Written from these sources, not copied from them. External links open in a new tab.