7Hz Elua Ultra VS KZ ZS12 PRO 2

The 7Hz Elua Ultra delivers a powerful and well-defined bass that extends deep without overwhelming the mids, making it stand out in its price range. Vocals are clear and detailed, with a natural presentation that works especially well for female voices, and there's minimal bass bleed into the midrange . The IEM requires a lengthy burn-in period for the drivers to fully stabilize and achieve coherence between the bass and treble.

Treble performance is detailed and expansive, offering good airiness without causing fatigue, though it can lean slightly analytical rather than musical. The accessories are quite basic, including a standard OCC copper cable and a few ear tips, which feels lacking even at this price point . Despite its low impedance, the Elua Ultra benefits from better amplification to overcome its lower sensitivity and unlock its full potential.

Overall, the Elua Ultra punches above its weight with a balanced and speaker-like sound that competes with more expensive models. Its ergonomic, lightweight design ensures comfort for long sessions, but the minimalist unboxing experience is a notable drawback . This IEM is a strong choice for those seeking a fun yet technically competent listen without breaking the bank.

The SIMGOT EW100P is an entry-level single dynamic driver IEM using a 10 mm dual-LCP diaphragm and transparent resin shells with aluminium faceplates, positioned in the roughly $20–25 price bracket. Build quality and ergonomics are generally described as solid for the price, with a lightweight shell, decent passive isolation and a simple silver-plated cable that is functional if not luxurious. Overall, the physical package is basic but coherent, matching expectations for a budget IEM while avoiding obvious flaws in comfort or construction.

Sonically, the EW100P follows a Harman IE2016-inspired, broadly U-shaped / neutral-bright tuning with a modest bass shelf and elevated upper mids, aiming for a clean and safe tonality rather than a bass-heavy signature. Bass is controlled and reasonably deep but not particularly authoritative, which suits listeners who prefer clean low end over impact, while the midrange is slightly forward with natural timbre that works well for vocals and acoustic instruments. Treble is tuned on the safer side with limited extension and sparkle, reducing fatigue but also limiting perceived air and micro-detail.

Technical performance is respectable for this price class: resolution and original sound fidelity are highlighted positively, but the soundstage is only average in size and layering can blur with complex material. Imaging and instrument separation are decent at normal listening levels but fall short of more expensive sets, and several reviewers note that while the EW100P competes well among sub-$30 IEMs, it does not significantly outperform the crowded budget field. Considering its low price, the EW100P offers a competent, neutral-leaning tuning and solid technicalities, but within a realistic value-for-money framework it remains a strong budget option rather than a giant-killer.