A budget IEM that offers allot and focuses on the fundamentals

At $31.90, the TWISTURA D MINOR is an unpretentious single‑dynamic IEM that aims squarely at practical, everyday listening. No exotic multi‑driver stacks, no elaborate technicalities, just a straightforward 10 mm dynamic driver in a comfortable shell, sold at a price that invites experimentation with enough ways to tweak the sound. With 3 different options nozzles and eartips to make it, I feel, a good option for those curious about the basics in this hobby.

I would like to thank Aoshida Audio for providing the TWISTURA D MINOR for the purposes of this review.

If you are interested in finding more information about this product, check out Aosida Audio official page and they have now also kindly provided a Promo Code: Jerome-DMinor with an extra 2% discount.

The Twistura D-Minor has been out for about a year now, and I barely see it mentioned online, but after living with it for the past month, I think it’s been unfairly overlooked.

Competition at this price is fierce but for $31.90 it offers a lot given all the accessories), and while the tuning won’t be for everyone, the tuning nozzles alone make it a fun purchase at this price, especially if you like 3 variations on a warmer easygoing sound signature.

But before I get more into the detail’s let’s look at the unboxing:

Unboxing and Build Quality

The unboxing is clean and minimal. box.jpeg

The back of the box: backbox-with-frequency-response.jpeg

The inner box with the sleeve removed: inside-box.jpeg

And finally we get to see d-Minor: openbox-iem-visible.jpeg

The cable is stored underneath: openbox.jpeg

What’s in the box: box-contents-eartips-usb-adapter.jpeg

  • IEMs
  • Detachable 2‑pin cable (0.78 mm), 3.5 mm plug
  • A very large selection of ear tips
  • A USB‑C audio dongle
  • Tuning nozzles
  • Documentation

I feel the addition of the usb-c dongle adds even more value to this offering and is something I wish more IEMs would provide in their box. It is a pity the usb-c dongle didn’t support PEQ, but at this price point that would be too much to ask for.

The IEM shells themselves look unusual, but I feel in ‘a good way’:

lovely-unusual-iem-shells.jpg lovely-unusual-iem-shells2.jpg

The clear plastic on the shells is very unusual but does provide a way to glimpse inside the shell:

iem-shell-unique-design.jpeg shell-zoomin.jpeg

The cable is just ok. What you should probably expect at this price but given its a standard 2-pin you can easily swap to a different cable should you want too.

The 2pin: cable-2pin-end.jpeg

The 3.5mm plug: cable-35mm-end.jpeg

The chin splitter: cable-chin-splitter.jpeg

Fit and Comfort

The shell has a distinctive shape. In my ears, the default tips didn’t quite achieve a perfect seal, and as a result the bass impact was lighter than expected at least initially. But a quick tip roll fixed this and since there’s a generous assortment in the box, you can experiment to find the right combination of bore size and material for your tastes.

Excellent selection of tips especially at this price:

eartip-selection.jpeg eartip-variation-one-wider-one-taller.jpeg eartips-similar-sized-nozzles.jpeg

If you still struggle, it’s worth trying a few third‑party options, while I like the shell design I feel a longer eartip can help with some ears.

I personally settled on these Eartips for my listening tests as they provided for me a good balance between size and shape and gave me that bass thump I was looking for: iem-shell-small-large-eartips-are-big-compared.jpeg

Nozzles

Not only is the eartip selection excellent at this price point, but having a choice of nozzles is pretty extrodinary in the $30 price range:

Nozzles included in the set Another view of the nozzle pieces
nozzles-in-accessories-box.jpeg alternative-tuning-nozzles-more-in-measurements.jpeg
Close views of two nozzle options
nozzle-1.jpeg nozzle-2.jpeg

A quick suggestion for newcomers

If you’re just starting the hobby, I’d buy a conventionally tuned baseline first — something like Truthear Zero Red (or Gate) or Tanchjim Zero (the DSP version is fine). Then circle back to this model when you’re ready to play with tip and nozzle swaps; the low price and generous accessories make it a fun “second” IEM to learn on.

Nozzle tuning at a glance

  • Red or Black: Two excellent takes on a warm‑neutral balance — fuller low end, natural mids, relaxed top.
  • Blue: Adds a little extra upper‑treble sparkle and turns the set into a more fun, slightly V‑shaped listen.

At this price, you don’t get app features or DSP, and that’s fine. The goal is a consistent, reliable baseline tuning that works out of the box.


Sound Impressions

Overall, the D MINOR presents a balanced‑to‑slightly‑warm tonality with a gentle bass lift, natural mids, and polite treble. It’s an easy listen that steers clear of shout and fatigue.

Bass

The low end walks that pleasing line between presence and restraint. There’s a mild mid‑bass rise that fills out drums and bass guitars without tipping into bloom, and the sub‑bass reaches low enough to give electronic and cinematic cues a convincing foundation for a single dynamic driver in this bracket. Impact is clean rather than blunt, with kick drums starting and stopping promptly, and basslines retaining shape even as arrangements get busier.

On James Blake’s “Limit to Your Love,” the D MINOR renders the famous bass swell with a measured rumble: you feel the note pressurize the space without it masking the vocal or turning the rest of the track soft. The set prioritizes definition over sheer slam, so you get good note edges and a tidy floor—more about articulation and control than chest‑thumping excess.

Midrange

The mids land naturally with a gentle warmth, giving vocals and acoustic instruments a believable body while maintaining clarity. There’s enough fill in the lower mids to avoid the papery thinness some budget sets exhibit, yet not so much that arrangements turn thick or hazy. Male and female vocals sit a touch forward of the band, intelligible even at low volumes, and guitars and piano arrive with timbre that feels familiar and unforced for the price.

Norah Jones’s “Don’t Know Why” is a good tell: her voice floats just ahead of the instruments, smooth and grain‑free, while the accompanying piano has appropriate weight to the left hand and a clean ring to the right. The D MINOR keeps sibilants in check and avoids honk or shout through the upper mids, yielding a midrange that’s easy to live with across genres.

Treble

Treble is polite and purposeful, aiming for long‑term comfort rather than showy brilliance. There’s adequate extension to carry air and room cues, but the overall contour smooths splash and edge so that cymbals and strings sound refined instead of brittle. Detail retrieval is respectable for the tier, presenting micro information without etching, and the overall tone avoids sharp peaks that trigger fatigue.

Cue up Steely Dan’s “Aja” and you’ll hear cymbal work that’s crisp enough to follow but rounded in its decay, with the ride and hi‑hat retaining texture minus the glare. Trumpet and sax come through with bite where needed yet stop short of piercing, supporting extended sessions where the treble supports the mix rather than stealing the spotlight.

Soundstage & Imaging

Stage size lands in moderate territory, presenting a coherent, stable scene that’s wider than it is deep. What stands out is the tidy organization: instruments maintain their lanes with convincing center focus, and even when tracks get busier the D MINOR resists collapsing into a blur. Layering isn’t cavernous, but there’s enough front‑to‑back differentiation to map ensembles without strain.

On Yosi Horikawa’s “Bubbles,” the left‑right pans arc smoothly with clean hand‑offs, and the percussive transients pop into their positions without smearing into the floor of the mix. Imaging precision is the star here—objects are easy to point to and follow—making for an engaging listen that favors accuracy and cohesion over artificial expansiveness.

Specifications and Measurements

Technical specifications

Item Detail
Brand Twistura
Product Model D‑MINOR(D小调)
Product Name Detachable‑cable In‑Ear Hi‑Fi Headphones
Driver Configuration 10 mm diameter high‑performance dynamic driver
Diaphragm Material LCP dome composite diaphragm
Impedance 300±3 (@1 kHz)
Sensitivity 108 dB/Vrms (@1 kHz)
Frequency Response Range 15 Hz – 37 kHz
Headphone Connector 0.78 mm 2‑pin
Standard Cable Plug 3.5 mm stereo single‑ended plug

Measurements

The Frequency response of the D MINOR shows a nice warm sound with a safe treble: fr-default-frequency-warmer-but-balanced.png

The sub-bass rolls off a little, so I would not recommend for bass heads but for genres like folk, classic rock and indie music, this will be a very pleasant listening experience.

But the nozzles do change things with the Red one especially boosting that bass response:

fr-nozzles-compared.jpg The bass (1) with the Red nozzle is boosted. The Black nozzle has slightly boosted vocal presense (2) and treble (3) than the other two nozzles. Overall, I feel this is a great option to have in the box and shows the real value for money offering you get with the Twistura D MINOR.

Here is comparison with some other IEMs in my collection: fr-compared-with-other-iems.jpg

So you can see the warmer mid-bass and the more relaxed treble in the comparison above.

Distortion is also kept to a minimum: Twistura Distortion.jpg

Rating Explanation

Pragmatic Rating: 4/5

For ~$32, the D MINOR nails the basics: comfort, sensible tuning, and a detachable cable — and then surprises with a USB‑C dongle, a huge tip selection, and nozzle tuning. It doesn’t try to be flashy; it focuses on reliability and listenability, while giving you room to experiment. At this price, that’s the right call.

Who it’s for:

  • Listeners who want a balanced, easygoing sound for daily use.
  • Budget shoppers who value comfort and detachable cables.
  • Newcomers looking for a safe first IEM tuning.

Conclusion

The TWISTURA D MINOR embraces a pragmatic philosophy: keep costs low, comfort high, and tuning sensible. With its simple single‑DD design and comfortable fit, it’s an easy recommendation for anyone who wants a reliable budget IEM without the usual gotchas. With a very decent set of ear tips and even a dongle included it is a great first IEM to start you into the hobby.