Strong of Arm and Fist – A Review of the iBasso DX150


I’ve grown to love the sound of this player using the digital filter “Super Slow Roll-Off”. Everything just seems a bit more analogue, or tube-like, with this filter. So keep in mind, the following impressions were made thusly. Now, the filters are subtle, and therefore most everything I write will apply no matter which setting you prefer. But still, it’s good to understand where I’m coming from.

The iBasso DX150 is warm, organic, and ever so musical. It has a muscle-y quality, full of dynamics and raw energy. IEMs are kicked into head-banging mode the instant you hit play. Bass stands prominent in the tuning, possessed of speed, strong attack, and evil power. It bolsters the mids, creating a meaty weight to vocals and unquestionable authority to guitars. Excellent clarity and detail keep the DX150 from paying for all this “Fun”. Never does it sound muddy or congested. High frequencies have enough presence to sparkle and illuminate, assuring superb articulation in all areas.

The soundstage is spacious, with great width and truly impressive depth. The DX150 renders a thoroughly three-dimensional image, portraying the tangibility of each element. The result is vivid, life-like audio. Texture and micro-detailing come through in abundance, aided by substantial resolving power. The balance is one of my favorites to date. It’s a rockbox, but one with no small measure of technical merit.

Although warmth is a main feature of the tonality, DX150 is not overly smooth. It’s capable of revealing all the blemishes and oddities of the recording. The dynamics are so stout, nothing can hide. Notes have vibrancy, an energy which brings them to singing life. But they are never thin or wispy. Indeed, tremendous body anchors them to the Earth, as robustness exudes from every instrument. All of this leads the DX150 to being profoundly natural-sounding, which in turn makes it one of the most transparent DAPs I own.

The Cayin N5ii ($369, Review HERE): Prior to the DX150, I held the N5ii as my choice for best mid-tier DAP. But iBasso sets a new bar. Of course, you pay extra for this new bar, but not too much. The DX150 is fuller, warmer, and more organic. There is a greater sense of depth and dimensionality. Cayin renders a sharper, and harsher sound, which feels thin and lacking weight in comparison. iBasso has the smoother, more natural notes. The soundstage is nearly the same width, but the DX150 squeezes out a tad more. (With Fast Roll-Off, some of these differences are less noticeable.)

Opus#1S ($399, Review HERE) is very warm, like the DX150. I expected this to be a closer match. It isn’t. The warmth 1S exhibits is accompanied by anemic notes. There’s hollowness behind the façade. DX150 comes off significantly fuller, with rounder, weightier notes. iBasso also portrays greater depth and a hair more width. 1S has a slight artificiality to it, producing subtle sibilance and treble glare. I never observed this before. But in direct comparison, DX150 is more organic and natural, with richer, more complete overtones. (Applying Sharp Roll-Off had less impact on the disparity between these two DAPs.)

For this next comparison, I used tia Fourté and EA Leonidas in balanced. I wanted the absolute clearest and most transparent monitor to mark the changes.

The DX200 ($899, Review HERE): Soundstage is wider and even deeper. Separation is cleaner and more profound. That sense of holographic immersion is taken to a new level. The render is silky smooth, whereas the DX150 sounds rougher. With the DX200, extension, both top and bottom, is superior. Bass in particular has greater control and definition. The 150 has the warmer tone, with the most bid-bass. 200 of course delivers the more detailed and reference-grade audio. Is there a massive difference? No. But it’s not what I’d call subtle, either. Never fear, the DX200 remains a true and proper flagship, in whose wake the DX150 doggedly pursues.

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About Author

Pinky is an artsy twat. Illustration, graphic design, writing. Yet music escapes him, and always has. He builds his own cables, and likes to explore the craftsmanship of others. He's a stabby one, also. At the first hint of annoyance, out comes the blade. I say he's compensating for something... in a big bad way. If we all try really hard as a collective, maybe we can have him put down.


    • I would start with getting one of the High Current AMPs for the DX150 (AMP7 if you run single-ended, AMP8 if you run balanced). Enjoy the sound improvements with that. Then get the DX200 if you’re still wanting more clarity and detail, soundstage and resolution.

  1. Hello,
    Thank you for this wonderful review.
    I own the DX150 and would like to use it to power the new Audeze LCD2 closed back.
    So I appeal to your knowledge to have an informed opinion before buying this headphones: do you think that the DX150 is powerful enough to drive correctly this headphones ??
    If not, can one of the amplification modules be better than the amp 6 ??
    Thank you in advance for your answer.

    • Looking at the specs of the LCD-2 Closed, I suspect you will want the AMP7 or AMP8 high-current modules to properly drive them. Those headphones are a serious load for any DAP to handle.

    • If only it were that easy. But I still have much need of it, for future articles.

      iBasso makes an investment when they send me a product. Not only does it get it’s own review, but it will join the cast, and make appearances in many more articles down the road, as points of comparison and pairing options.

      If the product’s any good, I try and use it as often as possible.

  2. Hello Pinky, thanks for another great write-up. Speaking of #1S/N5-II/DX150, which one you’d recommend as a better pairing for Periodic Be? These are my main IEMs.

    • Pinky Powers on

      The Be has a signature which works well with virtually everything. So none of them will sound bad.

      It really depends on what traits you wish to emphasize about your IEM. If you want to push clarity and detail, go with the N5ii. If you want the most bass energy and fun, go with DX150.

      Or if you just want the best all around player, I consider the DX150 a step up from both the N5ii and 1S.

      • Michael Gunin on

        Thanks a lot. Guess I’d like something more or less smooth and musical for genres like jazz, soul, funk, disco. So, likely the choice will be between DX150 and 1S (my current one is DX80).

    • Pinky Powers on

      Be at peace, Shaan. The 1S remains a brilliant device, and worthy of your affection for a long time to come.

      Plus… 2x microSD slots. The DX150 ain’t got that!

  3. Hi Pinky, were you running the Aeon Flow Closed single ended or balanced in your pairing?

    Cheers on another fantastic review!

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