Hidizs AP30 music boy & My Lin Limited Edition IEM

Hidizs AP30 Music Boy and My Lin Special Edition: An ultra-compact player and hybrid IEMs that together redefine listening on the go.

There is something magical about returning to a dedicated music player in an age where the smartphone, streaming apps, and algorithms have taken control of our daily listening. After spending weeks with the Sendy Audio Kylin on my desk, I felt it was time to explore what happens when high-resolution sound becomes truly portable and personal. Having thoroughly enjoyed the (in my opinion) spectacular Hidizs AP80 Pro Max just a few months ago, another package unexpectedly arrived from my friends at Hidizs.

Inside was a 2-in-1 package. The Hidizs AP30 Music Boy arrived in its box sporting a delightful 1990s nostalgia vibe, while the My Lin Special Edition IEMs presented themselves as a hybrid proposal promising warmth and precision in an in-ear format. Right from the first moment, pairing the two revealed a synergy that deserves to be described in detail.

This is a winning combo, sold as a bundle directly on the Hidizs website. As soon as they arrived, I opened both boxes, but I regret to report that I suffered a minor theft. My daughter found the stickers, figure, and cleaning cloth included with the My Lin headphones completely irresistible and confiscated them on the spot. I’m attaching a photo from their website because I fear that trying to retrieve them might lead to a full-blown rebellion.

Construcción

The AP30 Music Boy is a pocket-sized player inspired by the aesthetic of the handheld gaming consoles that dominated the market in the '90s. Its chassis combines lightweight plastic or CNC aluminum, depending on the chosen version, weighing just 56 grams with dimensions of 68 × 53 × 17 mm. The design is simply spectacular, as are the color combinations—an absolute triumph.

On the front, we find a 2.0-inch IPS display that clearly renders the HidizsOS interface, alongside an ALPS volume wheel and tactile buttons for navigation and playback. The back panel features an engraved whale plate, a detail that connects the device to the WDC conservation initiative. The AP30 includes a microSD card slot supporting up to 256 GB, 3.5mm single-ended and 4.4mm balanced headphone outputs, a USB Type-C port for charging and DAC mode, and Bluetooth 5.3 for wireless playback. Under the hood, it houses the RKNANOD main control chip, the CS43198 DAC, and the RT6863 amplifier, capable of decoding up to DSD256 and 24-bit/192 kHz PCM.

The My Lin Special Edition are hybrid IEMs featuring a 1BA + 1DD configuration, with an impedance of 17 Ω and a sensitivity of 111 dB. The shell is crafted from ZA12 zinc alloy with a carbon fiber faceplate that adds structural rigidity and a distinctive look. The 10.2mm dynamic driver handles the low frequencies, while the Silvercore™ balanced armature covers the midrange and highs. The detachable cable comes in both 3.5mm and 4.4mm options, utilizing OFC copper conductors with a braided sleeve that minimizes microphonics. Included in the box are three pairs of pneumatic tuning filters (red for a balanced presentation, black for bass enhancement, and white for treble expansion), six pairs of ergonomic silicone eartips, a manual, a warranty card, a protective pouch, an exclusive Lin sticker, an acrylic stand, and a microfiber cloth.

How It Sounds

To evaluate the synergy between the AP30 and the My Lin, I used the IEMs' 4.4mm cable connected directly to the player's balanced output, with the AP30 powered by its internal battery and occasionally charged using the BAZCO AUDIO L1 power cable I use on my desk. The internal interconnections of both devices are stock, as the portable nature of the setup renders additional external cabling unnecessary.

Mats Eilertsen Trio – “Perpetual” This track serves as a test of micro-dynamics and the silence between notes. Driven by the AP30, Mats Eilertsen's double bass through the My Lin presents a woody texture and tight control that prevents any low-end bloom. Every touch of the fingers sliding across the strings is reproduced with a clarity that preserves the warmth of the wood, while Harmen Fraanje's piano occupies a wide, three-dimensional space without losing definition. The air surrounding Ayumi Tanaka's cymbals feels natural and never aggressive, courtesy of the smooth treble extension of the My Lin and the clean output of the AP30.

Jon Hopkins – “Music for Ninth Life” We transition to electronic soundscapes and modular textures. Here, the AP30 showcases its ability to handle deep bass without losing definition: the sub-bass frequencies descend with authority and control, without a hint of muddying, while the synth pads and metallic chimings extend into the highs with a satin smoothness that invites you to close your eyes and let the sound fully envelope you. The soundstage is wide and coherent, with every element precisely placed within a 360-degree field—a remarkable feat for a player of this size and budget-friendly IEMs.

Anouar Brahem – “Blue Maqams” The pairing of Anouar Brahem's oud with Chick Corea's piano, Dave Holland's double bass, and Jack DeJohnette's drums is a masterclass in tonal integration. The My Lin reproduce the sharp attacks of the oud with a speed and liveliness that do full justice to the musician's technique, retaining the harmonic richness of the plucked strings without losing warmth in the midrange. Corea's piano sounds full and resonant, while the rhythm section of Holland and DeJohnette remains rock-solid and well-defined, allowing subtle recording nuances—such as the musicians' breathing or the faint studio room noise—to emerge with a naturalness rarely achieved in this price range.

Technical Specifications

Hidizs AP30 Music Boy

• Display: 2.0-inch IPS (296 × 240)

• Supported Formats: DSD256, PCM 24-bit/192 kHz, FLAC, WAV, ALAC, APE, WMA, MP3, OGG

• Headphone Outputs: 3.5 mm SE (61 mW + 61 mW @ 32 Ω), 4.4 mm BAL (137 mW + 137 mW @ 32 Ω)

• Bluetooth: 5.3 with SBC, AAC, aptX, aptX HD, and LDAC codecs

• Battery: 1,200 mAh, full charge in 1 hour, 8–12 hours of battery life depending on usage mode

• Dimensions: 68 × 53 × 17 mm

• Weight: 56 g

Hidizs My Lin Special Edition

• Drivers: 1BA + 1DD Hybrid

• Frequency Response: 20 Hz – 40 kHz

• Sensitivity: 111 dB

• Impedance: 17 Ω

• Dynamic Range: 109 dB

• Connector: Detachable 3.5 mm or 4.4 mm

• Weight: Approximately 5 g per earpiece (without cable)

• Accessories: Detachable cable, three pairs of pneumatic filters, six pairs of silicone eartips, protective pouch, manual, warranty card, Lin sticker, acrylic stand, microfiber cloth

Conclusions

The Hidizs AP30 Music Boy and the My Lin Special Edition form a portable duo that proves high fidelity doesn't need to be bulky or expensive to deliver a musically engaging and technically competent experience. The AP30 combines an intuitive interface, a clean and powerful amplification section, and high-resolution decoding that punches far above what its diminutive size suggests. The My Lin IEMs, for their part, deliver a warm, detailed, and comfortable sound ideal for extended listening sessions, thanks to their ergonomic design and a tuning focused on balanced clarity.

A few minor details to keep in mind: the compact size of the device inevitably means that the text on the screen is small. It's something you should be aware of. I couldn't find any menu options to increase the font size, but it's certainly something the folks at Hidizs could address in a future firmware update. Other than that, the design, lightweight feel, and overall build make it a phenomenal accessory. I've used it attached to the back of my phone on a couple of occasions—thanks to the MagSafe magnetic ring adapter—and it never fails to draw questions from people asking what it is.

Finally, because it is such a compact device, it is strictly limited to local file playback. So don't expect to find streaming services or internet radio here, unlike with the AP80.

Together, these devices allow you to enjoy demanding recordings with a spacious soundstage, tight and well-defined bass, rich and expressive mids, and extended yet never fatiguing highs. They are an ideal option for the audiophile who wants to take their music to the office, the gym, or on trips without sacrificing sound quality or the emotional connection to the art. If you're looking for a portable player that does full justice to your lossless files paired with IEMs that render them with naturalness and precision, this combination is well worth a serious audition.