The market of budget in-ear monitors is saturated and it can be really frustrating (especially if you are a beginner to in-ear monitors) to understand which one to buy in 2025.
To make things easier we have narrowed it down to two models that stand out in 2025 and make it a great beginner set: the 7HZ x Crinacle Zero: 2 and the Moondrop Chu 2. Both are successors to popular originals, but now they have a better tuning, detachable cables, and performance that challenges IEMs twice their price.
These two IEM offer very different sound profiles and serve very different listeners so today we will break it down for you so you can make an informed audio decision.
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Build, Fit & Everyday Use
Both IEMs feature detachable 2-pin cables, which is a huge quality-of-life upgrade. This means easier replacement, better longevity, and the ability to customize your listening setup.
The Moondrop Chu 2 uses a compact all-metal body that feels incredibly solid for the price. It’s more comfortable for smaller ears and offers better passive isolation due to its deep, secure fit. A minor downside is that the metal shells can get cold or warm depending on the environment.
The 7HZ Zero: 2 has a resin shell with a metal face plate and a slightly larger housing compared to the Chu 2. It’s lightweight and ergonomic for medium to large ears, but smaller ears might find the fit slightly bulky. The included cable is decent, if nothing fancy.
Sound Comparison
Now for the key difference—tuning and performance. Here’s where these two split into two very different directions.
The Chu 2 follows Moondrop’s in-house tuning philosophy, which leans toward a Harman-inspired neutral-bright sound signature. It prioritizes clarity, midrange accuracy, and treble airiness over warmth or bass slam.
The bass on the Chu 2 is fast and tight, but lacks the depth and physical impact found in more V-shaped sets. This makes it great for genres like classical, acoustic, indie, and anything that benefits from a neutral bass response.
The mids are forward and clean, especially the upper midrange—giving vocals and guitars additional energy. Treble is sparkly and detailed but overall this set can be fatiguing if you’re sensitive to treble or tend to listen at high volumes.
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The 7HZ Zero: 2 on the other hand, made in collaboration with Crinacle, offers a different experience. This isn’t a neutral IEM—it’s a fun and dynamic with elevated sub-bass, a relaxed upper midrange, and smooth treble.
The bass is the star of the show here. Unlike many budget IEMs that deliver bloated or uncontrolled low end, the Zero: 2 delivers deep and well-pronounced bass that’s textured and fun. This makes it ideal choice for hip-hop, EDM, pop, and also gaming.
Midrange is slightly pulled back, particularly in the upper midrange region, giving vocals a more laid-back presentation. Treble is smooth and non-fatiguing, making it a great choice for long listening sessions—even if it lacks the air and resolution of more expensive gear.
Genre Matching & Use Case
Moondrop Chu 2 excels in neutral genres like classical, jazz, indie rock, and acoustic. It’s perfect for analytical or balanced listening, even casual monitoring or video editing.
7HZ Zero: 2 is great for modern music—pop, hip-hop, R&B, electronic—and is especially enjoyable for long casual listening sessions where musicality matters more than accuracy.
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Pros and Cons
Moondrop Chu 2
Pros:
- Clean and balanced tuning
- Detailed treble with good extension
- Comfortable, compact metal shell
- Detachable 2-pin cable
- Great for vocals and acoustic detail
Cons:
- Lean bass—may lack impact for bass-heavy genres
- Slight treble sharpness at high volume
- Less forgiving of poor recordings
7HZ x Crinacle Zero: 2
Pros:
- Punchy, deep sub-bass
- Relaxed, non-fatiguing upper mids
- Smooth treble presentation
- Detachable cable and good fit for medium-large ears
- Fun, musical tuning for casual listening
Cons:
- Recessed mids may lack vocal intimacy
- Lower detail and air compared to Chu 2
- Shell might feel large for small ears
Who Should Buy Which?
Buy the Moondrop Chu 2 if you:
- Want a clean, controlled sound
- Prefer accuracy and treble clarity
- Are sensitive to bloated bass
- Plan to use your IEMs for vocals or acoustic music
- Have smaller ears or need a snug, metal-bodied fit
Buy the 7HZ x Crinacle Zero: 2 if you:
- Enjoy deep bass and energetic tuning
- Prefer a more relaxed midrange
- Want something fun and forgiving
- Like EDM, pop, or cinematic sound
- Don’t mind a slightly larger fit
Final Thoughts
The Moondrop Chu 2 and 7HZ Zero: 2 are budget IEMs done right. They may sit in the same price bracket, but they offer completely different listening experiences. Where one offers reference-style balance and detail sound, the other delivers great bass response and smooth warmth.
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