175 €

Review published:




per Side






16 Ohm











117 dB








Daily Life


10 - 20000 Hz


With the review of the STUDIO S1 the excursion through the product range of ACCUTONE closes for the moment, starting with the entry-level model LYRA, over the dual driver PAVO, up to the S1, with which we reached the high-class segment. The S1 is primarily addressed to musicians and developed for stage use. However, it also performs very well in everyday life.


The S1 is not stingy with its external dimensions. The case is quite slim in height, but relatively long. Above all, the nozzle can be inserted very far into the ear canal. This has advantages and disadvantages. The advantage is certainly the secure fit in the ear, especially with the included Comply tips and a very rich bass due to the deep penetration. However, you shouldn't be one of those people who complain about too small ears, or just enjoy them, because not everyone likes to run around as a dumbo, although this brings immense advantages when it comes to wearing comfort with in-ears. The deep seat is a bit unusual at the beginning, but you quickly get used to the feeling.
In the long run, I experience slight pain in the upper auricle, because the housing hits it.

The case is made of plastic and the front panel with logo is held together with the body by a screw. Beneath the plastic you can see a metal chamber, in which the dynamic driver is located, and a tube that connects to the bell. " Studio" is engraved on the inside of the case.

The isolation is really respectable. Especially when playing live on stage there shouldn't be too many problems to just put the right part of the music into your ear.

Unfortunately, the cable is only average, it does its job, but for over 150 € it can also be something more special, at least as far as haptics are concerned.


Hello Bass! The S1 belongs to the warmer IEMs and has a distinctive V-signature, which is fun.

The bass has a lot to offer and for some it can certainly be a borderline in terms of quantity. Thank God the S1 is not only able to work quantitatively, but also the quality is not neglected. The S1 is simply fun in every genre. Not for purists, but if you want to shake your ear with pressure, texture, dynamism and a lot of sub-bass, you should risk an ear with the S1. Admittedly, the bass also slips into the lower mids, but it doesn't discolour them unnecessarily. This is really impressive with the prominent role in the overall sound. Of course, the Comply tips also contribute to the bass experience. If the bass is too strong for you, you can use the included silicone tips, which tame the bass a bit.

The mids play as expected in a V-signature. They are generally reticent, but still have enough weight to show off their musical qualities and not go under.
If you like blaring guitars, drums with a lot of body and generally a full, dynamic sound, you'll find what you're looking for here, because that's what the S1 can offer. It may not be as clear, bright and detailed as the IKKO OH1, for example, but it sounds more natural and softer. In addition, it does not make the music selection unnecessarily difficult, since it can operate everything. I would still like some clarity and crisp in the mids, especially when it gets louder and more brute, although the mids remain surprisingly stable. Voices are well positioned and have a pleasant, natural timbre.

The treble doesn't even try to compete with the bass by being unnaturally inflated, even if it's above the midrange. They just stay calm and do everything right. They offer expansion and detail and enrich the sound by opening it and not distorting it. They won't cause any problems when it comes to sharpness, peaks or sibilants and still score with naturalness without appearing dull or too dark.

The stage is not the biggest, but it is appropriate for the price segment. Within the possibilities there is a clear separation with a slight overlay and a high amount of information. The 3D image can be convincing in your spatiality and several layers within the room can be identified!


I stick with it, the ACCUTONE S1 are simply fun and can also meet audiophile demands at the same time. They don't have the analytical depth of some BA, or hybrid configurations, but they manage to fill music with liveliness without artificially distorting the sound. Ok, the tight, deep, but also somewhat oversized bass reduces the naturalness factor a bit, but especially on stage (rock, metal, punk, hip-hop...) it can be a bit rougher and the deep punch is definitely desired. Of course, also in everyday life, if you like it more "In-Your-Face", concerning the bass.
People with smaller ears can get problems with the S1 and those who like it more analytical, brighter and harder in terms of highs and mids should perhaps look elsewhere again. In addition, I find the S1 then nevertheless somewhat overpriced in the comparison.




Here the processing plays a role and the usability of the scope of supply. Additionally the appearance, wearing comfort and robustness.

Here I evaluate for me subjectively the price/performance ratio - does not flow into the evaluation!

Z: No Brainer

A: money well spent

B: all right, you can do

C: gives better for less money

D: overpriced

E: collector's price

Daily life:
Here, I focus on the long-term audibility and whether I can hear it well out of the box. This is of course very subjective and therefore only a minimal deduction or bonus. 

(-0.1, 0, +0.1)


Rating in Letters

S: 9.5 - 10

A: 9.0 - 9.4​

B: 8.0 - 8.9​

C: 7.0 - 7.9

D: 6.0 - 6.9​
E: 5.0 - 5.9​

F: 0.0 - 4.9​





Second Opinion:


CHI-FIEAR © 2020 by David Hahn

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