[kristwi]

Immediate impressions:

• V decent amount of power, for my IEMs at least
• Great connectivity
• Sounds good, but highs seem a bit sharp compared to my NX4, but may be perceived
• Strange ergonomics - volume knob position awkward in both regular and flipped mode
• USB C position on the side awkward for external DAC usage
• No search function - pretty irritating
• Double tap volume to wake makes screen flash on then turn off again - probs happens 30% of the time
• Eddict SyncLink simply doesn't work for me - the app is pants

In the round, a pretty versatile little thing beyond some of these frustrations

Your IEMs might be a tad sharp. I had the M6 before and this M1s is a lot warmer and fuller sounding.

 

[Audiophile PT]

Your IEMs might be a tad sharp. I had the M6 before and this M1s is a lot warmer and fuller sounding.

I actually wish it was even warmer... (the treble is too sharp for my taste)

 

[kristwi]

I actually wish it was even warmer... (the treble is too sharp for my taste)

Which iems are you using? I could listen louder across the board and it’s less stressful for my ears too.
And I don’t use EQ but you can set 3 profiles and slightly adjust it to your taste.

 

[Audiophile PT]

Which iems are you using? I could listen louder across the board and it’s less stressful for my ears too.
And I don’t use EQ but you can set 3 profiles and slightly adjust it to your taste.

Using it with both Meze Rai Penta iems and Denon closed back 7200 (which is warm enough).
I would prefer not to use EQ to get the warmer sound with less sharp treble...

 

[dykzei]

I found EQ is not available when streaming from smartphone via LDAC to the M1s.
As opposed to having EQ available when playing from memory card, it seems strange?
Should EQ be available when M1s is receiving digital stream via Bluetooth?

 

[Phred68]

I found EQ is not available when streaming from smartphone via LDAC to the M1s.
As opposed to having EQ available when playing from memory card, it seems strange?
Should EQ be available when M1s is receiving digital stream via Bluetooth?

Also, EQ doesn't work on hi-res files (above 48k).

 

[dykzei]

Also, EQ doesn't work on hi-res files (above 48k).

I hope that at least saves some battery compared to when EQ is available and enabled

 

[kristwi]

@Shanling What digital filters are best to reduce high frequencies?

I stumbled onto some YouTube videos but it’s a hassle and in general I think I need more explanation.

Edit: I found this on FiiO about the same dac chip. @Audiophile PT I guess it will be able to help you out. If I’m reading correctly, 1/2 are cutting off higher frequencies faster or smoothing higher frequencies. Anybody know how to works?

1) Sharp Roll-Off Filter: full and rich sounds, positioned at the very rear. It is suitable for pop music.

2) Short Delay Sharp Roll-Off Filter: robust, thick and atmospheric sounds, positioned at the rear. With accurate sound positioning and enough sound thickness, it is suitable for pop music.

3) Low Dispersion Short Delay Filter: neutral sounds, positioned near the middle. It is a traditional filter that can match different music styles. If you have no idea about the filter, you can choose this one.

4) Slow Roll-Off Filter: coherent and clear sounds, positioned near the middle. It is suitable for classical music.

5) Short Delay Slow Roll-Off Filter: ultimately untouched sounds, positioned near the front. It can create an immersive music environment with clear and uncontrolled sounds, which is suitable for classical music.

6) Super Slow Roll-Off Filter: soft sounds, positioned at the very front. It is fast with relatively clean sounds.

I’d really love an answer from @Shanling about filters and what they do to the sound. It’s nowhere explained.

 

[Shanling]

I found EQ is not available when streaming from smartphone via LDAC to the M1s.
As opposed to having EQ available when playing from memory card, it seems strange?
Should EQ be available when M1s is receiving digital stream via Bluetooth?

Not supported

@Shanling What digital filters are best to reduce high frequencies?

I stumbled onto some YouTube videos but it’s a hassle and in general I think I need more explanation.

Edit: I found this on FiiO about the same dac chip. @Audiophile PT I guess it will be able to help you out. If I’m reading correctly, 1/2 are cutting off higher frequencies faster or smoothing higher frequencies. Anybody know how to works?

1) Sharp Roll-Off Filter: full and rich sounds, positioned at the very rear. It is suitable for pop music.

2) Short Delay Sharp Roll-Off Filter: robust, thick and atmospheric sounds, positioned at the rear. With accurate sound positioning and enough sound thickness, it is suitable for pop music.

3) Low Dispersion Short Delay Filter: neutral sounds, positioned near the middle. It is a traditional filter that can match different music styles. If you have no idea about the filter, you can choose this one.

4) Slow Roll-Off Filter: coherent and clear sounds, positioned near the middle. It is suitable for classical music.

5) Short Delay Slow Roll-Off Filter: ultimately untouched sounds, positioned near the front. It can create an immersive music environment with clear and uncontrolled sounds, which is suitable for classical music.

6) Super Slow Roll-Off Filter: soft sounds, positioned at the very front. It is fast with relatively clean sounds.

I’d really love an answer from @Shanling about filters and what they do to the sound. It’s nowhere explained.

Digital filters are a long and complicated topic. Easiest answer, try it yourself and see which one you prefer. In my experience, it's a lot about personal preference.

There are a lot of articles going into technical details how each filter works, you can start for example here: https://addictedtoaudio.com.au/blogs/how-to/how-to-pick-the-best-filter-setting-for-your-dac

 

[thebratts]

As have been noted above. EQ does nothing above 48khz, is this a design decision to not have.. ever?
(makes this player a bit useless for me since I have a lot of hi-res files and I would like to be able to just transfer them over and not having to convert them to be able to use EQ.)
Also, possibly not related to this player, but a general thing, replygain, is that not working for hi-res (it does not for me, but I have no other player to test with so I'm not sure if it's a replygain limitation or the m1s?).

Is there any plan to be able to select folders and add to playlist so the songs in all subfolders are added? does not seem to work now even if the option to add to either favourite or playlist is there when I select folders.

I also have issues with the buttons, especially play/paus being very much hit and miss to register a click, sometimes one works, sometime 3 clicks in a row is the solution etc.. Any idea if that is a firmware thing or a hardware issue?, or user error ?
Perhaps its related to me not using it correctly or perhaps someone have the same experience and know the scenario so I can see if I can reproduce the same?

lastly, more than one time per day the screen is just black, and I cannot do anything except holding volume to reset, I've not yet found a scenario that alway makes it happen but it's always when not having used the player for a while and there is no way to get it started. without a reset..
On the latest FW

 

[kristwi]

As have been noted above. EQ does nothing above 48khz, is this a design decision to not have.. ever?
(makes this player a bit useless for me since I have a lot of hi-res files and I would like to be able to just transfer them over and not having to convert them to be able to use EQ.)
Also, possibly not related to this player, but a general thing, replygain, is that not working for hi-res (it does not for me, but I have no other player to test with so I'm not sure if it's a replygain limitation or the m1s?).

Is there any plan to be able to select folders and add to playlist so the songs in all subfolders are added? does not seem to work now even if the option to add to either favourite or playlist is there when I select folders.

I also have issues with the buttons, especially play/paus being very much hit and miss to register a click, sometimes one works, sometime 3 clicks in a row is the solution etc.. Any idea if that is a firmware thing or a hardware issue?, or user error ?
Perhaps its related to me not using it correctly or perhaps someone have the same experience and know the scenario so I can see if I can reproduce the same?

lastly, more than one time per day the screen is just black, and I cannot do anything except holding volume to reset, I've not yet found a scenario that alway makes it happen but it's always when not having used the player for a while and there is no way to get it started. without a reset..

It turns off when you charge it but don’t play music. It’s to preserve battery. I’m pretty sure that’s what’s happening.

 

[thebratts]

It turns off when you charge it but don’t play music. It’s to preserve battery. I’m pretty sure that’s what’s happening.

Mm, I know but then it should turn on with one or two seconds press of volume right? not that you have to hold it for 5+ or whatever to restart it. e..g it's just black until then and no dialogue on confirm shutdown or anything. just nothing

 

[Shanling]

As have been noted above. EQ does nothing above 48khz, is this a design decision to not have.. ever?
(makes this player a bit useless for me since I have a lot of hi-res files and I would like to be able to just transfer them over and not having to convert them to be able to use EQ.)
Also, possibly not related to this player, but a general thing, replygain, is that not working for hi-res (it does not for me, but I have no other player to test with so I'm not sure if it's a replygain limitation or the m1s?).

Is there any plan to be able to select folders and add to playlist so the songs in all subfolders are added? does not seem to work now even if the option to add to either favourite or playlist is there when I select folders.

I also have issues with the buttons, especially play/paus being very much hit and miss to register a click, sometimes one works, sometime 3 clicks in a row is the solution etc.. Any idea if that is a firmware thing or a hardware issue?, or user error ?
Perhaps its related to me not using it correctly or perhaps someone have the same experience and know the scenario so I can see if I can reproduce the same?

lastly, more than one time per day the screen is just black, and I cannot do anything except holding volume to reset, I've not yet found a scenario that alway makes it happen but it's always when not having used the player for a while and there is no way to get it started. without a reset..
On the latest FW

For EQ, that's limitation of our system, not likely to be ever changed.

Adding whole subfolders, we asked software team about it, seems too complex to add.

If you have issues with buttons not registering, we would recommend sending your player for replacement under warranty.

The system freezing is not something we see from other users, again would recommend sending it in for warranty.

 

[blueakoi]

Hello, does M1S has upsample feature like in android's UAPP? I plan to use M1S as transport for my Cayin RU6 at my jogging session

I look for upsample because I feel somehow more energetic when listening to upsampling music while jogging

 

[InvisibleInk]

Hello, does M1S has upsample feature like in android's UAPP? I plan to use M1S as transport for my Cayin RU6 at my jogging session

I look for upsample because I feel somehow more energetic when listening to upsampling music while jogging

In your example, the RU6, being the DAC, is doing the over-sampling in order to execute its digital filters. You also have the no-oversampling option on the RU6, which many, including yours truly, prefer the sound of.