[iFi audio]

Thanks for your advice.... I will report here ...

Please do!

 

[richard51]

I just install the Ifipower for my starting Point systems NOS.dac and the ifipower is better than my battery, the noise level lower, without mistakes... I am very pleased... My system is cleaned and treated all along the electrical grid by my own methods already, then it was easy to detect the improvement against my lithium battery, first and foremost with dynamics, and more detailed and better separation...It was a surprise for the price...

The beginning and the end of the highest audio experience for me in my travel trough music was first and foremost noise control along the electrical grid and along the audio grid, even for a relatively modest system like mine...Buying costly product is not the only solution for this living experience... Ifipower is a perfect demonstration of this possibility at low cost...


Thanks to people of Ifipower...

P.s. I must say that placing some Tourmaline, Jade, and Shungite stones on the Ifipower transmute the clarity gained with a lower noise floor in a more musical, and velvet sound without lost of details...

 

[iFi audio]

I just install the Ifipower for my starting Point systems NOS.dac and the ifipower is better than my battery, the noise level lower, without mistakes... I am very pleased... My system is cleaned and treated all along the electrical grid by my own methods already, then it was easy to detect the improvement against my lithium battery, first and foremost with dynamics, and more detailed and better separation...It was a surprise for the price...

The beginning and the end of the highest audio experience for me in my travel trough music was first and foremost noise control along the electrical grid and along the audio grid, even for a relatively modest system like mine...Buying costly product is not the only solution for this living experience... Ifipower is a perfect demonstration of this possibility at low cost...


Thanks to people of Ifipower...

P.s. I must say that placing some Tourmaline, Jade, and Shungite stones on the Ifipower transmute the clarity gained with a lower noise floor in a more musical, and velvet sound without lost of details...

Enjoy!

 

[G_T_J]

Hello @iFi audio and everybody else following this thread.

I hope you don't mind me asking a few questions.

I have a pair of B&W MM1 desktop speakers which when I connect them to a source either via USB or through their Line input, they exhibit an audibly high noise floor.

When I subsequently disconnect the source(USB or audio input jack) the noise disappears. Therefore, I suspect it's their power supply responsible for that high noise floor (reverse power). Is that assumption correct?

Apparently, they use a 16V switching power supply. My question is, is your 15V iPower capable to drive them? I suspect the 1V drop (from 16V to 15V) should be within the device ''tolerance''?

As far as I can see, you produce 2 variations of 15V iPower - one 15V/1.5A and another 15V/4A.
Is the whole range of iPower power supplies (I'm referring to those with the wall-wart design - not to the ''brick'' 15V/4A) rated at 23VA (Volt-Amps)?

Thanks for all your help and clarifications!

 

[stuck limo]

I used my iFi iPower on a particular piece of schiity DAC and it helped clean up the sound a ton. Upper frequencies got cleaned and more in focus significantly. Thanks, iFi!

 

[iFi audio]

Hello @iFi audio
When I subsequently disconnect the source(USB or audio input jack) the noise disappears. Therefore, I suspect it's their power supply responsible for that high noise floor (reverse power). Is that assumption correct?

Might be the case, but not having your product we can't say for sure.

Apparently, they use a 16V switching power supply. My question is, is your 15V iPower capable to drive them? I suspect the 1V drop (from 16V to 15V) should be within the device ''tolerance''?

We advise to direct this question to the manufacturer of your product. They probably will say that 15V will do, but we'd ask nonetheless.

As far as I can see, you produce 2 variations of 15V iPower - one 15V/1.5A and another 15V/4A.
Is the whole range of iPower power supplies (I'm referring to those with the wall-wart design - not to the ''brick'' 15V/4A) rated at 23VA (Volt-Amps)?

Was this a typo by any chance? Was it about 230V (not 23V)?

Thanks for all your help and clarifications!

Sure thing, anytime!

 

[G_T_J]

Might be the case, but not having your product we can't say for sure.



We advise to direct this question to the manufacturer of your product. They probably will say that 15V will do, but we'd ask nonetheless.



Was this a typo by any chance? Was it about 230V (not 23V)?



Sure thing, anytime!

Thanks for getting back to me!

No, it wasn't a typo as I'm trying to figure out how many amps the 15V iPower outputs.
I thought all series come with a standard VA(Volt-amps) rating so I assumed the 15V version outputs 1.5A max. Is that correct?

Thank you!

 

[iFi audio]

the 15V version outputs 1.5A max. Is that correct?

It doesn' go above 1.2A, otherwise it wouldn't be within specs we list. You could use 15V/4A. It's not listed at our site yet, but we have them.

 

[G_T_J]

It doesn' go above 1.2A, otherwise it wouldn't be within specs we list. You could use 15V/4A. It's not listed at our site yet, but we have them.

That's what I'm going to do.

I'll get the 15V/1.2A for the DAC/Amp (original power supply is 15V/1A) and the 15V/4A for the speakers.
I have sent a question to B&W support and if they confirm I will proceed with the order.

At the time of writing I can only find the 15V/4A on ebay from German sellers...

Thank you!

EDIT: Ideally I would have liked a 15V/4A with dual output to feed both devices at the same time but there's no such thing as far as I'm concerned.

 

[iFi audio]

At the time of writing I can only find the 15V/4A on ebay from German sellers...

Shoot us a message here please: info@ifi-audio.com.

Thanks!

 

[G_T_J]

Shoot us a message here please: info@ifi-audio.com.

Thanks!

Will do!

I'll just wait for the reply from B&W and I will contact you directly on your website.
Thanks once again!

 

[maserluv]

Cant wait for your feedback G_T_J,

I'm in a similar scenario as you.Was wondering if the ifi iPower Plus could improve on the MM-1.

Regards Wayne

 

[G_T_J]

Cant wait for your feedback G_T_J,

I'm in a similar scenario as you.Was wondering if the ifi iPower Plus could improve on the MM-1.

Regards Wayne

Hi Wayne.

I'll get back here as soon as I receive a definite answer from B&W with regards to voltage tolerance of the MM1.
Still a very pricey choice feeding the MM1's as well as the DAC/Amp (Topping DX3 Pro) with linear power supplies. The cost will probably be around the region of £150 (!) Don't know if it's worth it at the end of the day plus there's still a possibility of not fixing the noise issue at all...

I have a strange relationship with the MM1s. I hate them over USB (when their DAC is being used - too bassy for my taste) but I love them connected via line in to other sources. If only there wasn't that hissing background noise. It's very annoying especially knowing it's there. I suspect their power supply is pure CRAP but how one can be sure...?

 

[iFi audio]

Will do!

I'll just wait for the reply from B&W and I will contact you directly on your website.
Thanks once again!

Sure thing!

 

[leeperry]

4A iPower, any info/link please?