The Timeless II ($229) recently launched as an upgrade to the very well-regarded 7Hz Timeless. Like its predecessor, the Timeless II is a planar magnetic single-driver IEM.
While not a single-driver IEM, the Simgot ET142 ($219) makes for a very interesting comparison. It features a planar magnetic main driver but is paired with a piezoelectric tweeter to help up in the upper regions. The ET142 also launched recently, in February 2025.
7HZ TIMELESS II SPECIFICATIONS
- Driver: 14.5mm planar magnetic driver
- Impedance: 15.2 ohms
- Sensitivity: 108 dB/V@1KHz
- Frequency Response: 5-40kHz
- Weight per earbud: 5 g
- Connector type: 0.78 mm 2-pin
- Cable: ca. 1.2 m detachable with interchangeable 3.5 mm and 4.4 mm jacks.
You can check out the current price and availability here:
- Linsoul: 7hz Timeless II
- Amazon: 7hz Timeless II
SIMGOT ET142 SPECIFICATIONS
- Drivers: 1 x 12.5mm planar magnetic driver + 1 x multi-layer piezoelectric ceramic driver
- Impedance: 14Ω ±15% (@1kHz)
- Sensitivity: 118dB/Vrms (@1kHz)
- Frequency Response: 8Hz–40kHz
- Cable: 732-core mixed oxygen-free copper & silver-plated Litz
- Connectors on earphones: 0.78mm 2-pin
- Cable termination: Interchangeable 3.5mm single-ended & 4.4mm balanced
Check current price and availability here:
- Linsoul: Simgot ET142
BUILD AND COMFORT
Although both IEMs are fully metal, their designs and shapes differ significantly. The Timeless II is more compact and lightweight but looks larger due to its extended circular faceplate that extends behind the earphone itself. In contrast, the ET142 is ergonomically shaped but also notably heavier, which gives it a very solid feel. Despite these differences, I find both to be very comfortable.
The Timeless II comes with a thinner, lighter cable, while the ET142 features a thicker, more premium-feeling cable—though some may prefer something more flexible.
Both models include four pairs of interchangeable nozzles.
COMPARISONS
Associated equipment:
- Amplifier: Topping A90
- DAC RME ADI-2 DAC FS
- Tips on both sets: Spinfit CP145 tips
- ET142 nozzles: Golden brass
- Timeless Nozzles: Golden flat-headed
The Hidden Camera by Photek
The ET142 delivers a dynamic and highly resolved sound with impressive bass. The Timeless II shares a similar sound profile but has a bit more emphasis on the midrange. Both offer excellent audio quality, but the ET142 has a certain organic character that makes it stand out.
Jambi by Tool
The two IEMs sound quite similar and are excellent in their own right. Guitars have a full-bodied, textured presentation, and the soundstage is impressive. Neither suffers from sibilance issues, which is a common problem with many earphones on this track.
Almost Like The Blues by Leonard Cohen
The ET142 has a thicker, warmer-sounding bass, but not less detail—rather the opposite, which I find quite impressive. The Timeless II has somewhat more presence in the midrange. I think the Timeless II are more neutral, but the ET142 has a more organic character.
Black Crow by Cassandra Wilson
Here they’re more similar again. The ET142 sounds more spacious, with slightly better separation. Vocals are pretty equal-sounding here. The Timeless II again sounds generally slightly crisper, and the ET142 a bit lusher.
Bored by Deftones
They both do very well with distorted guitars. There’s texture and body in spades with both earphones. Vocals are presented equally nice on both; neither of them sounds bright or edgy.
Desert Island Disk by Radiohead
Also here they are very similar. The ET142 has slightly fuller bass, and the Timeless II slightly crisper mids, but they’re very close. The detail level and the sound stage are pretty comparable, but the ET142 again sounds slightly more organic.
It Could Be Sweet by Portishead
The ET142 has thicker bass and a slightly bigger soundstage and feels slightly more organic.
Young Vivaldi RV 820 by Modo Antiquo
The Timeless II is significantly more pronounced in the upper mids, sounding crisper and more upfront than the ET142, which sounds quite dark in comparison.
Mahler’s Symphony No 2 III by Paavo Järvi
Differences in tonality on this symphonic piece are subtle. While the Timeless II performs excellently, the ET142 offers a slightly more refined sound; the slightly darker tonality combined with a more liquid treble makes it a bit more magical.
WRAPPING IT UP
Sound Signature
The Timeless II has a neutral tuning with a slight bass lift, while the ET142 leans more towards a V-shaped sound with a bit more bass and slightly reduced midrange presence, giving it a more colored character.
Treble
Both IEMs have a similar treble weight and excellent detail retrieval, with no issues of sibilance. While they share many qualities, I find the ET142 to be slightly more liquid and refined, offering greater nuance and subtlety.
Midrange
Although they often come out as pretty similar, the Timeless II is more pronounced, especially in the upper midrange, which makes for a more energetic presentation. The ET142 has a more laid-back midrange, which comes off as a bit darker than neutral. In terms of detail, they are very comparable.
Bass
The ET142 has an even fuller-sounding bass than the already slightly bassy Timeless II. Whether it makes a significant difference or not varies from track to track, and mostly they sound quite similar. In terms of detail and texture, they are also very similar, the Timeless II having a slightly crisper way of presenting detail while the ET142 is slightly rounder, without losing out on the nuances.
Soundstage and Imaging
Both IEMs offer a good soundstage, but the ET142 feels slightly wider, taller, and deeper. It also has a darker background with better instrument separation and imaging. That said, the differences are minor and mostly negligible.
Detail, Dynamics, and Timbre
Both IEMs are very similar in detail retrieval, but in the treble region, the ET142 stands out with a more nuanced, liquid, and refined presentation. The Timeless II has excellent treble, but the ET142 brings something special. Their midrange is quite similar, while the Timeless II’s bass might be slightly better defined. Dynamics are also very comparable.
When it comes to timbre, the Timeless II is more neutrally tuned with a slightly crisper character, whereas the ET142 has a darker, more laid-back presentation.
CONCLUSION
In conclusion, the 7Hz Timeless II and the Simgot ET142 are both excellent planar magnetic driver IEMs just above the $200 mark. They sound quite similar, with the Timeless II offering a more neutral sound, while the ET142 leans more towards a V-shaped sound signature with somewhat enhanced bass and treble. Their technical performance is on a similar level, but I find the ET142 to have a slightly more organic and refined touch.
Separate reviews can be found here:
Thanks for reading. You can support us by purchasing anything using any of our affiliate links.
- Linsoul: 7hz Timeless II
- Amazon: 7hz Timeless II
- Linsoul: Simgot ET142
Any purchase you make on Amazon or Linsoul with any of our affiliate links will give us a small provision at no cost to you.
We only get a provision for items that are not returned, so there’s no incentive for us to recommend something that’s not good.
Linsoul : Headphones, Earbuds, Wireless Earbuds, Desktop DAC/AMP, Portable DAC/AMP, Digital Audio Players,
Amazon: Headphones, IEMs, Headphone Amplifiers, Home Audio or Anything else.
.
If you enjoyed this article or other content on The Headphoneer, you might consider leaving a small donation to keep this website up and running. No donation is too small. Thanks for supporting us!
If you like our work please follow us on Instagram, Facebook and Twitter , it will help us grow. Sharing is caring 🙂
