WiiM Amp Pro - user evaluation

Pin the quote on the song..

Familiar Taste of Poison - Halestorm
Whore - In This Moment
AVA - Natalie Jane
Alarm (Marshmello Remix) - Anne-Marie
STRUT - Emeline
Seasons of Change - Firehouse
Lost - Within Temptation
STFD - TeZATalks
Rock Show - Halestorm
Shatter Me - Lindsay Sterling

Yes, this list is heavily Female Vocal oriented - not your thing iirc, Achim?
Time now for AC/DC, Black Sabbath, Dio...
 
I had one other quite strange situation with the amp when I first used it.
I'll start at the beginning, for A N Other User Evaluation.

Came home from a couple of hours out and was excited to see a parcel on the front doorstep.
Right size, right weight; could it be??

Opened it up and was actually quite surprised by how diminutive the Amp is in the flesh!
Surely an amp that small couldn't compete with my current amps?
Glad to see it came with an Aussie power cable (the ultra didn't, and I don't have a spare audiophile power cable lying around).
Note that so far I have only used it in one room / setup - replacing my pro / smsl dac / marantz pm6006 amp, into Krix speakers.
Long weekend coming up here though!

I unplugged the speakers from the marantz and was very careful to ensure I got the left /right and pos/neg all correct on the amp pro.
Bare wire connections, so I also double checked and tightened the speaker ends too.
Did that before plugging in the mains cable too ;)

Turned it on, same experience as adias, and as expected: firmware update etc. and a very smooth setup process.

So, time to get listening!
Fired up Tidal Connect, set the volume to a little under half way, chose my 'Demo' playlist of 10 songs and sat back to be...

...totally underwhelmed and quite disappointed. (But keep reading!)
So much so that I seriously though I had wired the speakers up incorrectly to start with.

My notes on each song had a common theme.
Here're some of them, just for fun!

"Relaxed presentation, Quite dull even." (1st song that is quite soft for half of it.)
"Very heavy bass. Vocals don't stand out from the background."
"Bass loud, but percussion is not crisp. Flat presentation."
"Beginning (of song) is dull. Doesn't grab your attention."
"Just a wall of sound. No finesse."
While listening to a song titled 'Lost': "Sums up the amp in one word."
"Vocals are soft, lacking punch. Like the whole presentation."
"Vocals just don't have the grip, grit, roughness I'm expecting."
"Ending (of a song, where it climaxes) is just mushed together."

My final comment was "'Reminds me of listening to the (original) Pro's analog out, but with a lot more bass. Significant lack of emotion and engagement with the music. Very, very underwhelmed."


So, where to from here?

When I applied room correction to my pro in this room it made a suble, yet significant, improvement.
The speakers are not well placed and the bass is accentuated. Nothing like the bass from the Amp Pro was, but RC did tame this nicely.

I ran RC on the amp pro using the defaults, with a cheap Android phone. Samsung A5?

Well, the sound was immediately transformed!
"Much, much better. The overwhelming bass has gone and the vocals are allowed to come through."
"Guitars now shine. Plucking is much clearer."
"Vocals no longer drowned out."
"Vocals greatly improved. The rawness is now evident."
"Perhaps lacking a bit of 'oomph' now, has RC tamed it a bit too much?"
"Cymbals much more evident, stands out from background now."
"Far better stereo separation."

The RC added 4* 2.5db dips at both 41hz and 106hz. For me, that took away some of the 'thump' I've probably got used to.
Since then I have manually adjusted the RC to bring back some of the bass.

As for what caused that initial, woeful, experience?
No idea. Toggling between my RC settings and EQ off now simply sounds like I'd expect - less/more bass, more/less overall cohesion.

So, my conclusion (if a short time listening in one room / setup can be called a conclusion).
I have never had a class D amp before, and wasn't sure what to expect. That, and it's tiny ;)
Colour me surprised, and impressed.


It's so easy to just start streaming. No longer have to turn on my dac and amp first.
Press a preset on the remote and away we go!
And, being called Amp, it's high up the list of Tidal connect devices so I no longer have to scroll down to find my pro.
Maybe I should rename the Ultra to An Ultra?
It's the little things that matter, and this thing is little.

Looking forward to swapping out the Hegel for this ;)
but your "pro", not "amp pro", in your normal installation already allowed you to test the "RC" mode No? etc
lots of funny comparisons are possible between these two solutions in rc..
or rc from one to peq from the other.....
 
Last edited:
Hi Mr. Ee,

Could you please send us a feedback ticket for your WiiM Amp Pro? We want to check this issue immediately. Thank you for your assistance!
Just had what I beleve was a little hdmi connection glitch - ticket 513594.
 
I had one other quite strange situation with the amp when I first used it.
I'll start at the beginning, for A N Other User Evaluation.

Came home from a couple of hours out and was excited to see a parcel on the front doorstep.
Right size, right weight; could it be??

Opened it up and was actually quite surprised by how diminutive the Amp is in the flesh!
Surely an amp that small couldn't compete with my current amps?
Glad to see it came with an Aussie power cable (the ultra didn't, and I don't have a spare audiophile power cable lying around).
Note that so far I have only used it in one room / setup - replacing my pro / smsl dac / marantz pm6006 amp, into Krix speakers.
Long weekend coming up here though!

I unplugged the speakers from the marantz and was very careful to ensure I got the left /right and pos/neg all correct on the amp pro.
Bare wire connections, so I also double checked and tightened the speaker ends too.
Did that before plugging in the mains cable too ;)

Turned it on, same experience as adias, and as expected: firmware update etc. and a very smooth setup process.

So, time to get listening!
Fired up Tidal Connect, set the volume to a little under half way, chose my 'Demo' playlist of 10 songs and sat back to be...

...totally underwhelmed and quite disappointed. (But keep reading!)
So much so that I seriously though I had wired the speakers up incorrectly to start with.

My notes on each song had a common theme.
Here're some of them, just for fun!

"Relaxed presentation, Quite dull even." (1st song that is quite soft for half of it.)
"Very heavy bass. Vocals don't stand out from the background."
"Bass loud, but percussion is not crisp. Flat presentation."
"Beginning (of song) is dull. Doesn't grab your attention."
"Just a wall of sound. No finesse."
While listening to a song titled 'Lost': "Sums up the amp in one word."
"Vocals are soft, lacking punch. Like the whole presentation."
"Vocals just don't have the grip, grit, roughness I'm expecting."
"Ending (of a song, where it climaxes) is just mushed together."

My final comment was "'Reminds me of listening to the (original) Pro's analog out, but with a lot more bass. Significant lack of emotion and engagement with the music. Very, very underwhelmed."


So, where to from here?

When I applied room correction to my pro in this room it made a suble, yet significant, improvement.
The speakers are not well placed and the bass is accentuated. Nothing like the bass from the Amp Pro was, but RC did tame this nicely.

I ran RC on the amp pro using the defaults, with a cheap Android phone. Samsung A5?

Well, the sound was immediately transformed!
"Much, much better. The overwhelming bass has gone and the vocals are allowed to come through."
"Guitars now shine. Plucking is much clearer."
"Vocals no longer drowned out."
"Vocals greatly improved. The rawness is now evident."
"Perhaps lacking a bit of 'oomph' now, has RC tamed it a bit too much?"
"Cymbals much more evident, stands out from background now."
"Far better stereo separation."

The RC added 4* 2.5db dips at both 41hz and 106hz. For me, that took away some of the 'thump' I've probably got used to.
Since then I have manually adjusted the RC to bring back some of the bass.

As for what caused that initial, woeful, experience?
No idea. Toggling between my RC settings and EQ off now simply sounds like I'd expect - less/more bass, more/less overall cohesion.

So, my conclusion (if a short time listening in one room / setup can be called a conclusion).
I have never had a class D amp before, and wasn't sure what to expect. That, and it's tiny ;)
Colour me surprised, and impressed.


It's so easy to just start streaming. No longer have to turn on my dac and amp first.
Press a preset on the remote and away we go!
And, being called Amp, it's high up the list of Tidal connect devices so I no longer have to scroll down to find my pro.
Maybe I should rename the Ultra to An Ultra?
It's the little things that matter, and this thing is little.

Looking forward to swapping out the Hegel for this ;)

Your impression is likely speaker/room dependent, IMO. In my case, with fairly neutral and reasonably well behaved FR speakers, in a large room with minimal boundary interaction, the sound is balanced as I described.

It does a good job for its size and designed application.
 
but your "pro", not "amp pro", in your normal installation already allowed you to test the "RC" mode No? etc
lots of funny comparisons are possible between these two solutions in rc..
or rc from one to peq from the other.....
I think I know what you're asking...

(normal) Pro via smsl and marantz sounds (a bit) different when RC is on vs off.
Amp Pro sounds (a bit) different when RC is on vs off.
The difference between on and off is the same for both of them, i.e. RC with both devices has the same effect to each of them, as expected.

What's strange, to me, is that the Amp Pro sounded awful until I turned on RC. However, turning RC off again merely made the same difference as toggling RC on the (normal) Pro.
It's almost like the Amp Pro had some very bad EQ applied when I first used it, and applying RC then turning it off again somehow cleared that.

Pure speculation, but I'm sure burn in wasn't a factor. :ROFLMAO:
 
Pin the quote on the song..

Familiar Taste of Poison - Halestorm
Whore - In This Moment
AVA - Natalie Jane
Alarm (Marshmello Remix) - Anne-Marie
STRUT - Emeline
Seasons of Change - Firehouse
Lost - Within Temptation
STFD - TeZATalks
Rock Show - Halestorm
Shatter Me - Lindsay Sterling

Yes, this list is heavily Female Vocal oriented - not your thing iirc, Achim?
Time now for AC/DC, Black Sabbath, Dio...
I must confess that I could not imagine you listening to Lindsay Sterling with your eyes closed at all. (My selfish fantasies about you got in the way.) I'm going to listen to this sweet playlist now, too. 😄👍
 
I think I know what you're asking...

(normal) Pro via smsl and marantz sounds (a bit) different when RC is on vs off.
Amp Pro sounds (a bit) different when RC is on vs off.
The difference between on and off is the same for both of them, i.e. RC with both devices has the same effect to each of them, as expected.

What's strange, to me, is that the Amp Pro sounded awful until I turned on RC. However, turning RC off again merely made the same difference as toggling RC on the (normal) Pro.
It's almost like the Amp Pro had some very bad EQ applied when I first used it, and applying RC then turning it off again somehow cleared that.

Pure speculation, but I'm sure burn in wasn't a factor. :ROFLMAO:
I don't understand very well..
your comparisons are now and future in rc-off in both cases..or peq mode with the same corrections on the main channel and the amp pro?
(other types of more complex music (that you know really well...) are planned for yours futur tests? )
 
I must confess that I could not imagine you listening to Lindsay Sterling with your eyes closed at all. (My selfish fantasies about you got in the way.) I'm going to listen to this sweet playlist now, too. 😄👍
😨
I'm hoping Google Translate had a hiccup there! :ROFLMAO:
 
I don't understand very well..
your comparisons are now and future in rc-off in both cases..or peq mode with the same corrections on the main channel and the amp pro?
(other types of more complex music (that you know really well...) are planned for yours futur tests? )

The latter, i.e. "peq mode with the same corrections on the main channel and the amp pro"
It's 5pm here now and I've spent pretty much all day working in this room with the amp pro playing tidal.
There have been a few occasions where I've wondered if some songs sound different than I remember through the pro/smsl/marantz combo (sometimes a tad 'harsher', not quite as 'full'?), but tbh the very fact that I'm wondering it rather than thinking it shows me that the amp pro is eminently capable when paired with / compared to equipment at this level.
I'll be throwing it in the ring with the Big Boys over the weekend.
Yes, fans, I feel another Rumble coming on. (Only a very limited fan base will get that reference.)

Other types of more complex music? But I like what I like... :)
'What are you listening to' is often far too highbrow for me!
Right now? Silent Lucidity, Queensryche. The vocals could do with a little more heft, but it's pretty darn good.
But the last time I listened to this song was on my main setup so that may well be clouding my judgement, so it'll be playing again on the weekend.
Too much of a faff to switch speakers back to the Marantz to compare right now, and anyway, I'm perfectly happy as it is.
Another One Bites The Dust just came on. Sweet!
 
Just switched to USB out to the smsl stack for evening headphone listening.
Nothing exciting to report - it sounds fine!

Similar "issue" to switching outputs on the Ultra between headphone and something else.
1) Need to turn off RC. My headphones are not a room ;) (or maybe there's too much room in my head)
2) Need to increase the volume to 100% (whereas for ultra need to reduce from 100%)
I sincerely hope I remember to reduce the amp's volume before switching back to speaker out.

C'mon Wiim, please do something to allow us to protect our ears / speakers when switching outputs!
 
While I'm at it, what do you (anyone with an amp) think the likely use case is for usb out?
Hardly likely to be to an external dac / another amp / different speakers I'd have thought.
Which leaves headphones, surely?
Dang, those lights are bright at 100% volume. Good job they can be turned off!
 
While I'm at it, what do you (anyone with an amp) think the likely use case is for usb out?
Hardly likely to be to an external dac / another amp / different speakers I'd have thought.
Which leaves headphones, surely?
Dang, those lights are bright at 100% volume. Good job they can be turned off!
For me, yes Headphones.
 
While I'm at it, what do you (anyone with an amp) think the likely use case is for usb out?
Hardly likely to be to an external dac / another amp / different speakers I'd have thought.
Which leaves headphones, surely?
Dang, those lights are bright at 100% volume. Good job they can be turned off!

As I stated before, I see this amp as the single electronic source of a compact sound/speaker system. It’s a streamer/amp and it fulfills that niche for a small office/den well. USB out? That requires an external DAC; surely connected to external equipment it can offer higher quality sound, but that’s not the purpose of this unit.
 
As I stated before, I see this amp as the single electronic source of a compact sound/speaker system. It’s a streamer/amp and it fulfills that niche for a small office/den well. USB out? That requires an external DAC; surely connected to external equipment it can offer higher quality sound, but that’s not the purpose of this unit.
My final intention for the amp (if it proves worthy!) will be in my office, replacing the current ultra / marantz pm8005 which take up a lot of desk space.
I often use headphones in my office instead of speakers (currently ultra usb to rme adi2), so usb out to a dac/hp amp is, for me, a significant purpose for this unit.
If it didn't have the ability to easily add headphone listening I wouldn't even consider this as a streaming source.
But again, that's my requirement / purpose.
 
My final intention for the amp (if it proves worthy!) will be in my office, replacing the current ultra / marantz pm8005 which take up a lot of desk space.
I often use headphones in my office instead of speakers (currently ultra usb to rme adi2), so usb out to a dac/hp amp is, for me, a significant purpose for this unit.
If it didn't have the ability to easily add headphone listening I wouldn't even consider this as a streaming source.
But again, that's my requirement / purpose.

Glad it works for you. If for headphone listening… why not just Ultra and move the amp elsewhere?
 
Glad it works for you. If for headphone listening… why not just Ultra and move the amp elsewhere?
'cos I still use speakers in the office and need something to drive them, but the pm8005 is a bit big!
imo, the ultra headphone is essentially a pretty good 'freeby' on the ultra, but can be bettered for not a lot of additional outlay.
And I need a good excuse to buy a Fiio K11 R2R ;)
I reckon a wiim amp and a fiio would look really good together under my monitor stand....
 
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