Planar IEM Comparison Review: 7Hz Timeless II vs. Sivga Nightingale

Finding high-quality in-ear monitors (IEMs) at a reasonable price can be a challenge, but 7Hz and Sivga are making that dream a reality. Both brands offer planar magnetic IEMs priced at $229, appealing to aspiring audiophiles looking for a serious upgrade. But which one is the better pick? We’ll compare their design, features, and—most importantly—their sound quality to help you make the best decision for your next IEM purchase.

What Comes In The Box

Aesthetics and Functionality

The design philosophy of these two IEMs is quite distinct. The 7Hz Timeless II sports a bold, geometric aesthetic with a circular plate face that gives it a futuristic look. Despite its large faceplate, it sits flush against the ear and maintains a secure fit. Thanks to the multiple ear tip options, users can fine-tune their comfort and achieve an optimal seal for the best sound isolation. Additionally, the interchangeable nozzles provide not only a stylistic choice but also subtle sound variations. On the other hand, the Sivga Nightingale takes a more refined and understated approach, featuring a teardrop-shaped shell that seamlessly conforms to the contours of the ear. Its lightweight build and over-ear cable loop ensure a secure yet unobtrusive fit, making it especially comfortable for extended listening sessions. While both IEMs excel in ergonomic design, the Timeless II offers a more distinctive, attention-grabbing aesthetic, whereas the Nightingale prioritizes elegance and subtlety.

Given their easy-to-drive design, plugging them into your computer or device is an easy to way to start listening. For people with more extensive setups, pairing the IEMs with DAC/Amps like the FiiO BTR15 or the FiiO KA2 is a great choice to amplify and elevate your sound.

Tech Specs

Listening Review

Soundstage

When it comes to soundstage and imaging, both IEMs offer engaging experiences but with distinct characteristics. The 7Hz Timeless II provides a wide and immersive soundstage, expanding in depth and height with precise imaging that allows listeners to easily pinpoint instrument placement. This makes it particularly engaging for complex mixes, where spatial accuracy enhances the listening experience. The Nightingale, in contrast, delivers a more open and airy sound but with a slightly narrower width. Its presentation feels ethereal, lending itself well to ambient and acoustic music, though its imaging is slightly less precise than the Timeless II.

Bass Frequencies

The bass performance of these IEMs follows a similar divergence in tuning philosophy. The Timeless II delivers a punchy and impactful low-end response, offering a satisfying sub-bass rumble that remains detailed and controlled. It is particularly well-suited for genres like EDM, hip-hop, and pop, where bass energy is crucial. Meanwhile, the Nightingale’s bass is more refined and balanced, favoring accuracy over sheer impact. Its low frequencies are tighter and more controlled, making it ideal for those who prefer a more neutral sound signature, especially for jazz, classical, and folk music.

Midrange Frequencies

In the midrange, the Timeless II presents an engaging and detailed response, layering instruments and vocals with clarity and separation. While it may sound slightly synthetic due to its analytical tuning, it remains musical and enjoyable across different genres. Vocals are particularly well-represented, standing out clearly in the mix without becoming harsh or overly forward. The Nightingale, on the other hand, leans towards a more organic and natural midrange presentation. Vocals and instruments possess a lifelike quality, with excellent textural detail that enhances emotional expression in music. Its ability to maintain smooth and realistic mids makes it an excellent choice for vocal-centric genres like R&B, opera, and singer-songwriter music.

Treble Frequencies

The treble response of these IEMs also showcases their differing approaches. The Timeless II offers crisp and detailed highs, ensuring clarity without introducing excessive brightness or sibilance. Though slightly compressed compared to open-back headphones, its treble remains well-extended and contributes to the overall balanced tuning. The Nightingale, by contrast, delivers a smoother and more relaxed treble presentation. While it lacks some of the sparkle and airiness found in the Timeless II, it prioritizes long-term listening comfort, making it ideal for those who are sensitive to treble fatigue.

Summary

Choosing between the 7Hz Timeless II and the Sivga Nightingale ultimately depends on personal preference and listening priorities. The Timeless II is the better choice for those who enjoy a dynamic, immersive sound with strong bass impact, precise imaging, and customizable tuning options. Its energetic presentation and engaging detail make it a fantastic all-rounder for modern genres. On the other hand, the Sivga Nightingale is perfect for listeners who prefer a more natural, balanced sound with a smooth, non-fatiguing treble. Its organic midrange and refined bass make it an excellent choice for those who prioritize comfort and a lifelike presentation of vocals and acoustic instruments.

Both IEMs offer exceptional value for their price, and no matter which one you choose, you’re guaranteed a top-tier listening experience at $229.

The 7Hz Timeless II and the Sivga Nightingale are both available at Audio46.