FiiO M11S review (2023) suggested for premium portable listening

a talented portable music player

The FiiO M11S is a brand-new high-resolution portable music player. The new player supports a wide range of audio file formats, has a dual DAC setup, and a new amplification circuit, all for a price that is pretty reasonable for a high-resolution player. The M11S aims to build on the success of the very popular M11 and the excellent high-end M11 Pro you can buy this product directly from amazon.

FiiO M11S: Description

The M11S has two high-quality ES9038Q2M DAC chips, one for the left channel and one for the right channel. High-resolution audio files up to 32-bit/384kHz and DSD256 are supported, and MQA tracks from Tidal can be decoded. The M11S also has a new “innovative” headphone amplifier circuit, and FiiO says that the 1.9uV noise floor is “one of the lowest” found in portable music players.

At 32 ohms, the balanced power output is said to be 670mW. This means that it should be strong. There is a standard 3.5mm headphone jack, balanced outputs for 2.5mm and 4.4mm headphones, and a line-out. The M11S can also be used as a USB DAC for your laptop, just like the five-star M11 Pro we tested in 2020, and as a Bluetooth transmitter/receiver for your smartphone and other similar devices.

Pros and Cons


  • Bold, organized and detailed sound
  • Great specification
  • Impressive user interface


  • Slightly aggressive treble
  • Average single-ended power

FiiO M11S: Features


  • Decoding
  • Amplification
  • Multi-function button
  • Volume control
  • Android 10
  • FiiO Music App
  • MQA 8X

FiiO M11S: Design

FiiO M11S review

By smartphone standards, the M11S is big, but compared to portable music players, it is very small and easy to carry. It’s 125 x 74 x 19 mm (4.9 x 2.9 x 0.7 inches) and 271g (9.6 oz) in weight. Even though these are not small numbers, they are short when it comes to media players. The M11S is also known for how well it is made and finished.

Its frame is made of machined aluminum, and it has just enough sides that don’t line up to make it (slightly) interesting. The back is made of ordinary plastic, while the front, which is almost entirely a touchscreen, is made of glass and comes with a tempered glass screen protector from the factory. Everything fits together well, there are no exposed bolt heads or other unsightly parts, and the quality of the materials and construction gives the FiiO the look of a high-end product.

FiiO M11S: Features

FiiO M11S review

Headphones with wires or without? No matter what you like, the FiiO M11S has a style for you. The company has gone to a lot of trouble to make sure that the sound you get from your headphones is of the highest quality.

If you want to use wired headphones instead of wireless ones, there are 2.5mm, 4.4mm, and the more common 3.5mm unbalanced sockets on the bottom of the chassis. This is because wired headphones are better for their weight than wireless ones. These are on either side of a USB-C port in the middle. This port is used to charge the battery (10–14 hours of use between charges, depending on how you listen) and to use the M11S as a DAC.

If you prefer wireless headphones, the FiiO uses Bluetooth 5.0 and is compatible with SBC, AAC, aptX-HD, and LDAC codecs. Only a fool would say that convenience isn’t important. If you want to use the M11S as a Bluetooth receiver, SBC, AAC, and LDAC are your options. It also has 5GHz Wi-Fi built in.

In any case, the digital audio files you end up listening to are processed by two ESS ES9038Q2M DACs, one for each channel. These DACs can handle resolutions of 32bit/384kHz and DSD256. MQA decoding is also available, and if you use the M11S as a USB DAC (for example, to finally make your laptop worth listening to), it can handle files up to 32bit/768kHz and DSD512. The amplification is done by a three-stage op/amp from Texas Instruments. Each stage is powered separately, which helps bring the noise floor down to a very impressive 1.8uV.

FiiO M11S: Sound quality

There are some smartphones that sound pretty good, that’s for sure. But it’s also true that even the best smartphone can’t compete with the sound quality of a dedicated portable music player like the FiiO M11S, which is not too expensive.

You don’t have to listen long, hard, or with headphones that are especially good to know that the M11S is the real thing. It is good at making music in every way that matters, and in some ways it is a real expert.

I tested the FiiO with Sennheiser IE900 earbuds with a 4.4mm balanced termination and Technics EAH-AZ60 true wireless earbuds through Bluetooth to find out what it could do. There are many different kinds of digital audio files, from small MP3 files to big 24bit/192kHz files and DSD64 tracks. And no matter the details, the overall results are always the same: the FiiO is a lively, informative, and convincing listen, though sometimes it’s a little too enthusiastic.

When it comes to the basics of making music, the M11S is a good choice all around. It has a neutral tone across the whole range of frequencies, like Goldilocks. It’s neither too warm nor too cold, but just right. It does a good job of shaping low frequencies, giving them weight and substance while keeping them sharp and quick, so rhythmic expression is good and momentum can’t be denied. Detail levels are just as high here as they are in the rest of the frequency range, but the FiiO’s ability to find and deliver information through the midrange is hard to beat.

The M11S is smart enough to pick up on small or fleeting details, and it can easily describe even the most subtle changes in the volume of a solo instrument. It has more than enough headroom to handle big changes in dynamics easily and can also describe a big, wide, and well-defined soundstage.

FiiO M11S: Performance

FiiO M11S review

The FiiO M11S does a great job of getting over the first performance hurdle, which is to make even the best-sounding smartphone sound a bit useless. And after that, almost all of the news is good.

Obviously, the M11S sounds best when it’s working with big, high-resolution audio files and when it’s being played through equally good (and, ideally, hard-wired) headphones. But unlike a lot of other players, the FiiO is not snobby. If you want to listen to a 320kbps MP3 of Frank Ocean’s Pyramids through a pair of Lypertek wireless earbuds, it’s just as happy to play ball as when you’re listening to a 24bit/192kHz file of Kacey Musgraves’ Space Cowboy through a pair of Sennheiser IE900 on a balanced cable The M11S is a clear and enthusiastic listen in every situation.

The bass it makes is strong, well-controlled, fast enough, and has a lot of detail. This means that you not only get a lot of information about what’s happening in the low frequencies, but you also get a good sense of rhythm and momentum. The midrange, on the other hand, is full of fine details of tone and timbre, so singers can fully show off their skills and personalities. And the soundstage the M11S creates is more than spacious enough to allow a vocalist plenty of breathing space without ever sounding remote or estranged from the rest of the action.

FiiO M11S: Battery Life

FiiO M11S review

The 5300mAh battery in the M11S can be charged quickly with QC4.0, and it only takes 3 hours to fully charge. With the new DAC and amp circuitry, the M11S can play lossy files for more than 14 hours on high gain tests with a 32 load. When playing lossless tracks on the same setting, the playback time is cut by about 40%, which is more than enough for daily commutes.

Final Words

Fiio has made a lot of great DAPs, and now that they have the M11S, I don’t feel bad about telling my friends to get one. The M11S is a great way to get started with high-quality portable listening. The main thing that worries me is that Fiio also has the M11 Plus ESS for $150 more, which might be worth saving up for. But if you really can’t get out of that $500 range, it’s great that Fiio gives you this option.


How much power does FIIO M11S output?

670mW is a lot of power. Under a 32-ohm load, the single-ended power output is 167mW, while the balanced power output is a healthy 670mW. This lets the M11S make music that really takes your breath away.

Is FIIO any good?

The Fiio M11 Plus (ESS) looks great and sounds great, but there are some (minor) problems with how it works, like how slow it is to load music and how complicated the settings menus are. But it also has a lot of great features for the price, which makes it a great deal overall.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


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The M11S is engaging and not boring or clinical, though it offers a great deal of transparency and precision with immense clarity.FiiO M11S review (2023) suggested for premium portable listening