WiiM Amp Pro

[canard]

I was talking specifically about the 104/2 kef... not the 105/2 which I don't know about the impedance curve side... the 104/2 was a rather special case...

 

[Steve Woodhouse]

he hasn't measured anything that hasn't been known for a while about this type of approach and this chip...
(the arrival, implementation, put forward for several months of the pffb has just made the subject resonate differently, while it was voluntarily put aside in the name of "not too much impact and the cost/power" of these small classes d )

( impedance curve of his blade kef ?)


will just be case by case depending on the speakers, requirements etc. that's all...
(I don't care..just tell myself that if friends asked me their opinion..I would warn them regarding the amp-loudspeaker marriage..precautions to take..just that)

He checked it out with several different speakers.

 

[canard]

He checked it out with several different speakers.

the requirements-needs of each other vary so much...that each one has to have their own experience...the prescriber effect on the internet clearly shows its limits in this area...

all my friends whose experience I know see their musical tastes, their quirks (hihi), who put them away had nothing to gain by doing so..it's worth to me the opinion of a stranger etc. I can sort things out a little.. ;-)
(I really wouldn't want to become a solution prescriber, or parrot things asserted on the internet, really not...but if I can warn friends...that I will...it's quite different ;-) )


I'm also not the one "to argue with someone" on such an unessential subject, let's stick with it..thank you

 

[Wiimer]

Marantz's WiiM amp...
Model M1.



It seems to be a BTL full digital amplifier equipped with 4 amp chips jointly developed with Axign.

Marantz公式サイト

“Marantz”は1953年にソウル･B･マランツ氏が、米国にてプレミアムオーディオ製品の開発･製造・販売をおこなうブランドとして設立。鋭い感性を持った音楽愛好家達の期待をも超越するという創業以来のソウル・B・マランツの精神は、常にマランツ製品の中に反映されています。

preprod.marantz.com

 

[slartibartfast]

the requirements-needs of each other vary so much...that each one has to have their own experience...the prescriber effect on the internet clearly shows its limits in this area...

all my friends whose experience I know see their musical tastes, their quirks (hihi), who put them away had nothing to gain by doing so..it's worth to me the opinion of a stranger etc. I can sort things out a little.. ;-)
(I really wouldn't want to become a solution prescriber, or parrot things asserted on the internet, really not...but if I can warn friends...that I will...it's quite different ;-) )


I'm also not the one "to argue with someone" on such an unessential subject, let's stick with it..thank you

Maybe your friends didn't have room correction or EQ available on their Class D amps

 

[canard]

Maybe your friends didn't have room correction or EQ available on their Class D amps

indeed...
(but I also have those who ultimately preferred to remove the DSP, or use only on sub, whatever the amp class hehe )
It's not all that simple... ;-)

 

[Steve Woodhouse]

the requirements-needs of each other vary so much...that each one has to have their own experience...the prescriber effect on the internet clearly shows its limits in this area...

all my friends whose experience I know see their musical tastes, their quirks (hihi), who put them away had nothing to gain by doing so..it's worth to me the opinion of a stranger etc. I can sort things out a little.. ;-)
(I really wouldn't want to become a solution prescriber, or parrot things asserted on the internet, really not...but if I can warn friends...that I will...it's quite different ;-) )


I'm also not the one "to argue with someone" on such an unessential subject, let's stick with it..thank you

I’m sorry, I don’t understand most of that.

May I politely ask that you re-write it.

Many thanks.

 

[phunny12000]

On a different but much needed note, I set the filter thingy on startup and it's got an echo in the vocals, how do I get back to that menu option (im totally green about filters and just getting used to the wiim plus) please?

 

[harkpabst]

On a different but much needed note, I set the filter thingy on startup and it's got an echo in the vocals, how do I get back to that menu option (im totally green about filters and just getting used to the wiim plus) please?

You posted to a WiiM Amp forum but I suspect you own a WiiM Pro Plus?

This has different filter settings for the DAC and EQ settings. Which are you referring to?
DAC filter settings:

Where on the app can I find WiiM Pro Plus DAC filters?

I read enough about WiiM DAC and want to play with the filters. I’ve poured through the app settings and various threads, but I can’t find where I can choose filters. Any pointers would help. Or do I need to reset it?

forum.wiimhome.com

EQ settings:
Hit the gear icon on the Device page of the WiiM Home app and press EQ.

 

[phunny12000]

Yeah sorry it popped up in notifications while I was trying to find how to do it, I'm new to commenting on forums and saw the other settings above and asked without looking further at the post, I am very interested in the new amp though, and well impressed with my plus so far,selected one of the roll of things on rushing setup and couldn't find it again, haven't a clue what I'm doing, but thanks for the reply and understanding, got my ifi ipower 2 and it seems to be making the bass punchier and sort of smooths everything, could be placebo, wasn't impressed with Amazon uhd music through firestick Max and had no control over output, I'm waffling sorry

 

[Smartplug]

the requirements-needs of each other vary so much...that each one has to have their own experience...the prescriber effect on the internet clearly shows its limits in this area...

all my friends whose experience I know see their musical tastes, their quirks (hihi), who put them away had nothing to gain by doing so..it's worth to me the opinion of a stranger etc. I can sort things out a little.. ;-)
(I really wouldn't want to become a solution prescriber, or parrot things asserted on the internet, really not...but if I can warn friends...that I will...it's quite different ;-) )


I'm also not the one "to argue with someone" on such an unessential subject, let's stick with it..thank you

Here we go again! Can someone understand this?

 

[harkpabst]

Yeah sorry it popped up in notifications while I was trying to find how to do it, I'm new to commenting on forums and saw the other settings above and asked without looking further at the post, I am very interested in the new amp though, and well impressed with my plus so far,selected one of the roll of things on rushing setup and couldn't find it again, haven't a clue what I'm doing, but thanks for the reply and understanding, got my ifi ipower 2 and it seems to be making the bass punchier and sort of smooths everything, could be placebo, wasn't impressed with Amazon uhd music through firestick Max and had no control over output, I'm waffling sorry

Did you find the filter settings you've been looking for?

 

[Griff]

Here we go again! Can someone understand this?

Hi @Smartplug I think all @canard saying is that he, and his mates, are not a fans of Class D amps from their experience perspective. And he respects that experience over the review of someone on the internet. He can make this judgement himself and the class D amps they have bought have ended up in the cupboard. But he does wish to tell people that Class AB is the 'don' of amp technology in his opinion and flag to fellow forum members what he sees as the deficiency of Class D amps.
However he doesn't really want to get in an argument about it.

 

[phunny12000]

Did you find the filter settings you've been looking for?

O found the list with ql hl or something next to a list of frequencies but when I first set it up it gave me roll off settings i think, it's 5.45 am and i can't play with it , I have noticed when you power on the volume sets at zero, really got me looking for problems with my avr that weren't their till i accidentally pressed volume, just been watching Erin etc on their broadcast , only Joe and tell ever heard of wiim!! and Joe only had and knew about the amp that's available at the present
I like my plus so much I want the new amp, it's reminded me of true expensive hi fi I heard as a kid in friends houses with quality gear, never thought id actually afford that quality,at a basic level I've spent a few thousand but this has really changed my system
Bed time for me and thank you and any advice is appreciated

 

[Jls]

Hi @Smartplug I think all @canard saying is that he, and his mates, are not a fans of Class D amps from their experience perspective. And he respects that experience over the review of someone on the internet. He can make this judgement himself and the class D amps they have bought have ended up in the cupboard. But he does wish to tell people that Class AB is the 'don' of amp technology in his opinion and flag to fellow forum members what he sees as the deficiency of Class D amps.
However he doesn't really want to get in an argument about it.

I thought real audiophiles only used class A tube amps.

 

[Smartplug]

I thought real audiophiles only used class A tube amps.

Class A will give you low power out due to heat generation and energy wasted but give you the cleanest pure fidelity. AB is the most common class used by audiophile.

 

[Jls]

Class A will give you low power out due to heat generation and energy wasted but give you the cleanest pure fidelity. AB is the most common class used by audiophile.

I know that, but class D, in theory, has the same potential as digital audio in general. If perfectly implemented it has no crossover distortion. I’m not saying any product has achieved this.

 

[harkpabst]

The D in class does not stand for digital, btw. Class D are switching amplifiers, not digital amplifiers.

 

[Jls]

The D in class does not stand for digital, btw. Class D are switching amplifiers, not digital amplifiers.

They are switching, which means the driver is on or off. Binary. The analog output is derived from varying pulse width. The output is bandpass filtered to eliminate high frequency artifacts.

My point is, there is no crossover notch. No IM distortion. The output can theoretically be as clean as the signal from a really good DAC. I suspect it’s approaching that already at reasonable levels and with speakers that do not present unpleasant loads.

 

[harkpabst]

They are switching, which means the driver is on or off. Binary. The analog output is derived from varying pulse width. The output is bandpass filtered to eliminate high frequency artifacts.

My point is, there is no crossover notch. No IM distortion. The output can theoretically be as clean as the signal from a really good DAC. I suspect it’s approaching that already at reasonable levels and with speakers that do not present unpleasant loads.

A switching amplifier can even be made as a DAC, sometimes referred to as a power DAC (or a digitally controlled switching amplifier). The technology behind is is purely analogue, still.

IMD is caused by any non-linearity, not just because of crossover effects and class D amps are still prone to them.

That's not to say I disagree with the view that class D amplifiers can be made to excellent standards and surely continue to replace linear designs.