If you want professional-grade studio monitoring with exceptional comfort for long sessions, choose PHONON SMB-02; if you need high-fidelity portable listening with customizable sound signatures and a compact form factor, choose Hidizs MP145.
• PHONON SMB-02: Delivers unmatched accuracy and space definition for mixing in closed environments, but its over-ear design is bulky and lacks the portability of true wireless or in-ear options.
• Hidizs MP145: Offers incredible detail retrieval and a massive soundstage through planar magnetic technology, yet it requires careful fitting and an external amplifier to reach full potential.
• Best for: The PHONON SMB-02 fits the producer who needs to hear every flaw in a mix without fatigue, while the Hidizs MP145 suits the audiophile who wants reference-quality sound on the go or during focused listening.
The PHONON SMB-02 is engineered for one specific purpose: accurate monitoring. If your primary goal is to hear audio exactly as it was recorded, without coloration or artificial boost, this headphone is built for that task. The brand utilizes an exclusive tuning theory developed by a highly experienced mastering engineer, ensuring that what you hear is the truth of the source material. This isn't a consumer headphone designed to make bass feel "thumpier" or treble "sparklier"; it is a tool for discerning consumers and professionals who demand precision. The frequency response is tuned to cover the full 20 Hz to 20 kHz range, allowing you to catch details across the entire audible spectrum.
Comfort is a major selling point here, specifically for those who wear headphones for hours. The ear pads are described as thick yet lightweight, constructed from materials like silicone, leather, or fabric depending on the configuration. This design choice minimizes ear fatigue, making them suitable for long mixing sessions or extended critical listening periods. The enclosure uses a stick-type mono design, which contributes to their robust build. Whether you are working in a home studio or sitting at a console, the SMB-02 provides excellent space definition and stunning low-volume playback capabilities. You can appreciate subtle nuances in a track even when the volume is turned down, a feature that is rare in many other headphones.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-27 · 7 min read · Independent comparison
However, this product is not for everyone. Its over-ear design means it is less portable than in-ear monitors. If you are looking for something to throw in a pocket while commuting, the SMB-02 is not the right choice. Additionally, the lack of active noise cancellation or remote controls means you rely entirely on passive isolation and the physical seal of the ear cups. It connects via a standard 3.5 mm jack, requiring a wired connection to any output source, from a smartphone to a professional mixing console. If you value mobility and modern features like Bluetooth or voice assistants, this classic, wired design might feel limiting. But for pure, unadulterated sound quality and long-term comfort, the SMB-02 stands out as a serious contender for anyone who takes audio seriously.
The Hidizs MP145 represents a different philosophy entirely: high-resolution portability. These in-ear monitors utilize a custom fast 14.5 mm planar driver, a technology known for its ability to reproduce micro-details with terrifying realism. Unlike dynamic drivers that can sometimes blur transients, the planar diaphragm in the MP145 achieves zero phase shift, rendering everything from the friction of bow hair on strings to the subtle decay of orchestral instruments with absolute clarity. The use of a 7+7 biaxial compression system and a powerful magnet array generates approximately 1 Tesla of flux density, resulting in distortion levels as low as 0.05%. This makes it an ideal choice for listeners who want to hear the "holographic" aspects of a recording, including the ambient air and venue acoustics that surround the musicians.
What truly sets the MP145 apart is its versatility through customization. The inclusion of three pneumatic tuning filters allows users to unlock nine different sound styles within a single pair of earbuds. You can physically swap these filters to alter the frequency balance, effectively changing the character of the sound from bass-heavy to balanced or vocal-focused without needing software EQ. The housing itself is crafted from aerospace aluminum using 12-layer CNC milling, inspired by whale biology to channel airflow and eliminate resonance. This bionic engineering ensures a secure, ergonomic fit that maintains a proper seal for lossless bass performance. The liquid silicone ear tips are designed to be comfortable for extended wear, while the included cable features silver-plated OCC wires to enhance conductivity and reduce signal loss.
Despite its technical prowess, the Hidizs MP145 comes with specific requirements. As a high-sensitivity, low-impedance device, it performs best when paired with a capable source, such as a dedicated DAC or a high-quality portable player. While it can be driven by phones, unlocking its full potential often requires a bit more power than a basic smartphone jack can provide comfortably. Furthermore, because they are in-ear monitors, they do not offer the same open, spacious feeling as over-ear headphones unless you prefer the isolation of the ear canal. They are also strictly wired, connecting via 3.5 mm or 2.5 mm balanced jacks, which may require adapters for some modern devices. If you prioritize deep immersion, extreme detail, and the ability to tailor the sound to your mood, the MP145 is a powerhouse. However, if you find in-ear designs uncomfortable or need the broader soundstage of a large cup, this might not be the perfect fit.
• Best for studio mixing and critical listening → PHONON SMB-02, due to its proven tuning for professional accuracy and space definition.
• Best for portable, high-resolution audio → Hidizs MP145, thanks to its planar magnetic driver and compact form factor.
• Best for long-wear comfort → PHONON SMB-02, as the thick, lightweight ear pads are specifically designed to minimize fatigue over hours of use.
• Best for sound customization → Hidizs MP145, offering nine distinct sound profiles via swappable pneumatic filters.
• Best for detailed bass and micro-detail retrieval → Hidizs MP145, with its ultra-low distortion and extended frequency response up to 40kHz.
• Best for general music enjoyment → PHONON SMB-02 offers a more natural, flat presentation, while Hidizs MP145 provides a more immersive, holographic experience.
• Best for connectivity flexibility → Hidizs MP145, supporting both 3.5 mm and 2.5 mm balanced connections for higher fidelity setups.
• Best for durability and build → Both are solid, but PHONON SMB-02 feels like a heavy-duty studio tool, whereas Hidizs MP145 is a precision-engineered piece of jewelry.
After weighing the specifications and intended use cases, I would choose the Hidizs MP145 for my personal setup, particularly if I were looking for a solution for TV watching where crystal clear calls and sports earbuds are often required, or simply for immersive movie listening. The ability to customize the sound signature with the pneumatic filters gives me control over how the dialogue sounds versus the action sequences, which is crucial for media consumption. The planar magnetic driver delivers a level of detail and speed that over-ear headphones at this price point simply cannot match in a portable package. While the PHONON SMB-02 is an incredible tool for a studio environment, the Hidizs MP145 offers a more versatile and engaging experience for daily listening and entertainment. If you are torn between the two, the MP145 wins on innovation and adaptability, making it the better all-around choice for the modern listener.
The Hidizs MP145 has an ergonomic design that seals well for passive noise isolation, but neither is marketed for swimming or heavy sweat exposure like dedicated sports gear.
No, the PHONON SMB-02 does not feature active noise cancellation. It relies on the passive isolation provided by its over-ear design and the density of the ear pads to block out ambient noise.
The Hidizs MP145 includes a remote with push buttons, which suggests call functionality, but it is primarily an in-ear monitor optimized for music playback. For the absolute best calls, you would typically look for a dedicated microphone headset, though the MP145 handles vocals with exceptional clarity.
The Hidizs MP145 might edge ahead due to its HRTF-enhanced spatial mapping and ability to render live vocals with holographic ambience, making dialogue feel more present and natural compared to the flatter, studio-monitor style of the PHONON SMB-02.
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