Sivga has developed a reputation for combining distinctive craftsmanship with approachable audiophile performance. The Nightingale Pro continues that direction as the latest addition to the company’s expanding selection of wired earphones. Let’s examine its design, comfort, technical performance, and overall sound quality to see how it compares with today’s growing field of planar magnetic IEMs.
What You Get
- Nightingale PRO earphones
- Real leather case
- 2x Eartip size L
- 2x Eartip size M
- 2x Eartip size S
- User manual
Look & Feel
Sivga has made plenty of IEMs, but their recent releases tout some very interesting designs that, like their headphones, utilize different kinds of wood. The Nightingale Pro has the same egg-shaped housing as the previous model, but with a lighter zebrawood faceplate. There’s no excessive resin that coats the top layer, just the natural polished wood. This sets the Nightingale Pro apart, not just from the previous model, but also from a lot of other IEMs that use wood materials in their builds. As for the fit, the Nightingale Pro is very comfortable. The inner cavity rounds out and gives the nozzle a chance to really hold the earphones in place. It’s not the most stable fit, but the shape of the shell is ergonomic enough to feel like a natural part of your ear so you don’t need to think about them much once you start playing music.
Design
The SIVGA Nightingale Pro uses a proprietary 14.5mm planar magnetic driver built around a multi-magnet array of high-performance neodymium magnets. Its ultra-thin assembly pairs a newly developed 0.008mm composite diaphragm with a 0.006mm aluminum ribbon conductor, allowing the driver to respond quickly and efficiently. This design aims to produce fast transients, strong dynamics, extended high frequencies, and a detailed, spacious presentation.
- Frequency response: 20 Hz – 40 kHz
- Sensitivity: 107 dB +/- 3 dB
- Impedance: 16 Ohm +/-15%
Soundstage
Like most affordable planar IEMs, the Sivga Nightingale Pro is very impressive with its soundstage. The stereo image is spaced out with good separation that highlights channel identity. It’s an organized presentation that is wide but never too sparse. Everything appears tall, with a proper body that doesn’t leave too much blank space. This works for the Nightingale Pro, as it doesn’t project this grand outward headspace. It’s a concentrated stereo image with enough scope to bring out the sound field. The Nightingale Pro isn’t even that tactile when it comes to spatial positioning, but the instruments can still be localized.
Low End
The Nightingale Pro can push some solid bass tone that helps establish a good foundation. It’s a layered tone with some surprising depth, but if you’re looking for more gripping rumble and punch, that’s not how these are tuned. Everything in the low end has a natural timbre that doesn’t feel boring in my opinion. However, the sub-bass remains noticeably limp when frequencies start appearing there. You can feel its surface, but it has virtually no drive outside of a very soft thump. You can still hear a physical bass ressonance here, though, and I think the lows take a pretty clear shape overall. Bass guitars glide and groove with a nice level of detail, and they appear lively enough to provide a focused low-end presence.
Mids
Most of the midrange frequencies are consistent in their clarity and detail, but the upper-midrange is definitely raised. This brings vocals into focus, adding crispness to their tone. It’s the best quality of the midrange, with resolving instruments surrounding them with an elevated presentation. Like the low end, their timbre is very natural, even if the uptick in mid-treble tone can emit some shoutiness. It’s all brought under control, and the midrange ends up showing some nice depth as a result. They express a good amount of room and can also be pretty intimate, especially when vocals are right up in front of your face. Individual notes have weight even if the transient response isn’t very immediate.
Highs
There is a very clear shimmer to the high frequencies that you’ll either take or leave. I would have actually preferred if the Nightingale Pro had more of a tail, but there seems to be a hard barrier that rolls off the ultra-high frequencies. This is a bit odd considering how strong the initial spark of the treble. Tambourines and bells glimmer and then dip for a pretty jarring tonal contrast. I think it works, as I enjoyed the clarity here enough, but slight tweaks to some of the higher frequencies would really bring out that sparkle, instead of a half-in-half-out approach.
Summary
The SIVGA Nightingale Pro is an attractive planar magnetic IEM with an organized soundstage, natural timbre, and a clear, vocal-forward presentation. Its bass offers satisfying texture and definition, even if listeners seeking powerful sub-bass rumble may find it too restrained. The treble also produces plenty of initial shimmer, though its upper-frequency roll-off can make certain details feel abruptly shortened. Despite those tonal quirks, the Nightingale Pro remains an engaging listen. Its comfortable ergonomic shell, polished zebrawood faceplate, and spacious imaging give it an identity beyond its planar driver technology. Listeners who prioritize vocal clarity, instrumental separation, and realistic tone over heavy bass impact should find plenty to appreciate here.
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The Sivga Nightingale Pro is available at Audio46.
