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Warbler Audio’s Prelude- a labour of love

The newcomer Warbler Audio enters the market with a unique single driver CIEM

Warbler Prelude

Normally, when one picks up the phone at 3am, it’s an emergency. Unless the twin towers have been attacked again, or someone’s in a life-and-death situation, you jolly well wait until morning. The mad scientists at Warbler, though, live on 3am calls to each other. I don’t know about you, but in my world that’s an unfriend you on Facebook type of scenario, which is obviously even worse than unfriending you in real life.

But perhaps it’s for the best that Tahsin, Baran and Hasan, three friends and fellow audiophiles who came together to start Warbler Audio, did not end up waiting till morning for all their calls to one another. After all, they’ve already spent five years (!) developing their one and only IEM. Imagine if they worked normal work hours- it might have taken a cool dozen years! In the process they’ve tried single driver designs, multiple driver/crossover designs, acrylic shells, silicon shells, acrylic shells again… During one particularly passionate 5am session, they even went full caffeine crazy and coded a programme to simulate effects on sound from changes in crossover design.

I first listened to a prototype of their IEM about a year and a half ago, and in the meantime they’ve revised their designs a few times based on feedback. After all of that experimentation, they’ve made an incredibly bold and interesting choice, coming back to the most timeless design of them all. Single BA, available only in acrylic. Classic. No crossovers, no fuss. (Ha, so much for that computer simulation- see what I mean by crazy?)

Personally, I’ve long thought that simplicity and purity is absolutely worth paying for. It is a lot harder to make a simple design sound good, so when I find one that works, I go all gaga. In theory, single driver IEMs present a more realistic sound, better coherence, and more realism and naturalness. Without multiple crossovers to cut up the audio signal, and without the need to carefully match paralleled drivers (each of which introduce micro-distortion since matching can never be puuurrfect), what you end up with is a design that has the potential to be extremely pure, resolving, and realistic.

But what makes their single driver so unique, so different from any other single driver? What took them five years to get here? There are no crossovers to tune; no drivers to mix. How do they make it sound so special?

That, unfortunately, are trade secrets that they’ve refused to share. But they gave an example- did you know that the angle at which the driver fires into the tube matters? They’ve tested thousands of such mundane variables over the past few years, and it’s all crystallised into this single product.

This is Warbler Audio, and here is their first IEM, the Prelude.

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IEM: Warbler Prelude

Form Factor: Custom In-Ear Monitor

Damage: $1099 USD

Type of CIEM: 1 BA Driver



Page 2: Turkish Delight: An Interview with Warbler Audio





When jelt2359's Shure earphones stopped working ten years ago he was forced, kicking and screaming, to replace them. He ended up with more than 20 new IEMs. Oops! jelt2359 flies to a different city almost every week for work, and is always looking for the perfect audio setup to bring along.


7 Responses

  1. My personal experience is that some of the best products are designed by aficionados whether it’s musical instruments, computer monitors, or here, audio products. I’m looking forward to finding out what the end result is. When it comes to music, I want the very best and am not afraid to spend extra for a product that does what it says it will.

  2. Hello jelt, nice review! i’m also a fellow former string player (cello) and enjoy stringed instruments sounding with a bit more friction and bite. do you know any ciems under 1200 usd that have such qualities? thx.

  3. Quoting from your review:
    “Even more impressive, it may be one of the best IEMs I’ve ever heard straight out of my iPhone. It’s incredible how many otherwise splendid IEMs sound like nonsense from my iPhone. Kudos.”

    For a person who mainly uses Apple music as source can one do better than getting this ciem for a $1000 dollars (instead of dividing the investment in getting a dac/amp and another less expensive IEM.)

  4. Can this earphone be used to eliminate the compulsion to buy a source upgrade from an iPhone before buying a pair of ciems? 😉

  5. Its absolutely mental that through precise engineering of a single driver, the sound it churns can have so much soul in it, as what i interpreted from your astounding review. Really, its been awhile since some CIEM surprised me.

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