[159650]

   
Ha, "real PSU", them's some fighting words. Quick note Michael Grace posted in response to a PSU question on Massdrop: 
 
"The analog power supply design is based on our push-pull DC-DC converter developed for our m101 microphone preamplifier. Professional microphone preamaplifiers are extremely low noise, high gain circuits that require very quiet power supplies.

Jamie Kraphol is our engineer in charge of the magnetics design for this power supply. He spent months optimizing this design for high power output, dual voltage operation (Buss Power vs High Power mode), and sample rate synchronous operation . So while the circuit topology looks similar to the m101/m103 it is a different animal in terms of performance parameters."
 
If you have specific questions about the PSU, how it measures compared to your "real" alternatives, w/e, I'm glad to pass them along to Michael. 

My hero

 

[WillBright]

Originally Posted by Kwangsun 
 
My hero 

 
All in a day's work good citizen

 

[m8o]

Eh, not really, we just get a lot of complaints from spouses about "unhealthy" spending habits so every once in a while, when someone buys over $1000 of stuff from us in a 10 day window, we make sure to ping their spouse and make sure everything's fine. 

Lol jk.

Hahaha ha ....

 

[WillBright]

Hahaha ha ....

 
Don't worry, it's the plight of the enthusiast. Whether it's $500 DAC/Amps, $3400 pocket knives, or $80 balls of yarn, it's about spending on what makes you happy, can't always expect other people to understand. 
 
I remember being 13, saving up my money to buy a pair of HD555s.  My parents gave me so much trash (edited to trash, first word got caught in the disneyland filter) for that, I know the struggle. 
 
Still, way better than spending on BS you'll have to toss in a couple months like most consumers. 

 

[avitron142]

  Sorry, my bad on the PC listening part. I guess I'll look up the psu thing myself. Thanks

Don't mind Shaffer, he's often misunderstood as sarcastic.

 

[audiorrorist]

It's doing pretty good on massdrop so far.  It's got 175 purchasers.
 
I wonder if it will have the same signature as the m920.  I had a horrible experience with the m920 and makes me hesitant to commit to this.
 
This one does look elegant and hopefully mine was just a bad unit.

 

[159650]

  Don't mind Shaffer, he's often misunderstood as sarcastic, like this comment.

The m9xx uses a 5V 2A power supply fed by a USB port. It's a power connection like any other minus the high voltage but then a device can be design to work around that by using a higher current, in this case, 2A. It could have a large external PSU, but that doesn't mean it's got any more juice or that it delivers a cleaner signal, at least that's what I think. If he saw the technical specs of the PSU used in the m9xx and had some complaints about it, then I could completely understand where he's coming from. I wasn't trying to tick anyone off. Really. Just wanted to know if he knew something in particular about the m9xx's PSU design and would be willing to share his thoughts. 
 
It's just sort of a pet peeve of mine (and I apologize if it's a source of friction here). When I hear that something isn't liked, I want to know exactly why that is the case because it helps me see all the pros and cons. Aside from loving audio, I love cars. I am a member of a car group on FB and I often hear people (in it) saying "Hondas are gay". But when pressed they don't have an answer as to why. Sure they might say "I hate ricers", "I hate VTEC" etc. But I want to know then - if it's not Japanese (or a riced up car), then would you like the car then, and if so, is that logical and what aspect of VTEC do you not like. And I tell you, 9/10 times, they don't have an answer. 

 

[avitron142]

  The m9xx uses a 5V 2A power supply fed by a USB port. It's a power connection like any other minus the high voltage but then a device can be design to work around that by using a higher current, in this case, 2A. It could have a large external PSU, but that doesn't mean it's got any more juice or that it delivers a cleaner signal, at least that's what I think. If he saw the technical specs of the PSU used in the m9xx and had some complaints about it, then I could completely understand where he's coming from. I wasn't trying to tick anyone off. Really. Just wanted to know if he knew something in particular about the m9xx's PSU design and would be willing to share his thoughts. 
 
It's just sort of a pet peeve of mine (and I apologize if it's a source of friction here). When I hear that something isn't liked, I want to know exactly why that is the case because it helps me see all the pros and cons. Aside from loving audio, I love cars. I am a member of a car group on FB and I often hear people (in it) saying "Hondas are gay". But when pressed they don't have an answer as to why. Sure they might say "I hate ricers", "I hate VTEC" etc. But I want to know then - if it's not Japanese (or a riced up car), then would you like the car then, and if so, is that logical and what aspect of VTEC do you not like. And I tell you, 9/10 times, they don't have an answer. 

That ought to show me not to make confusing comments like that xD I totally agree with you on this one, if I wasn't clear before.

 

[159650]

  That ought to show me not to make confusing comments like that xD I totally agree with you on this one, if I wasn't clear before.

Sorry as well for misunderstanding. Let's just clear this out and continue with the thread discussions. Apologies to everyone else for wasting your time with my bickering and going off topic.

 

[Allanmarcus]

  The m9xx uses a 5V 2A power supply fed by a USB port. It's a power connection like any other minus the high voltage but then a device can be design to work around that by using a higher current, in this case, 2A. It could have a large external PSU, but that doesn't mean it's got any more juice or that it delivers a cleaner signal, at least that's what I think. If he saw the technical specs of the PSU used in the m9xx and had some complaints about it, then I could completely understand where he's coming from. I wasn't trying to tick anyone off. Really. Just wanted to know if he knew something in particular about the m9xx's PSU design and would be willing to share his thoughts. 
 
It's just sort of a pet peeve of mine (and I apologize if it's a source of friction here). When I hear that something isn't liked, I want to know exactly why that is the case because it helps me see all the pros and cons. Aside from loving audio, I love cars. I am a member of a car group on FB and I often hear people (in it) saying "Hondas are gay". But when pressed they don't have an answer as to why. Sure they might say "I hate ricers", "I hate VTEC" etc. But I want to know then - if it's not Japanese (or a riced up car), then would you like the car then, and if so, is that logical and what aspect of VTEC do you not like. And I tell you, 9/10 times, they don't have an answer. 

Wow, fun group on FB there. Homophobic and racists. Let me guess, sexist too? 

 

[159650]

 
Wow, fun group on FB there. Homophobic and racists. Let me guess, sexist too? 

Haha well, only when it comes to Hondas apparently! You know how it can be. I don't agree with them all the time. We are united by our love of our group's particular brand, but that just invites room for polarized views on other brands. Which is fine. But in my views - if you're gonna hate something, then have a good and logical reason as to why. Because if you don't, you end up looking like a 5 year old kid who hates clown's because they're "scary". Liking or hating something out of emotion is fine; we're all human. Just leave it out when the discussion calls for logic and educated scrutiny, not emotional biases. 

 

[moedawg140]

Updated review with iPhone 6 to m9XX connection pictures and description.  Have a great day/night everyone! 

 

[sicksugar]

Ok, so I just recently.got the Audeze EL8 closed back, which I love, and I got the basic Schiit stack for it. Started with the uber stack and replaced the magni with the vali since it was too bright/harsh.
I'm still not too pleased with the combo, and think I need a better/stronger amp to make the best of the EL8.
The question is, will the 9xx be a huge leap forward or just maybe slightly better? Has anyone tried the 9xx with the EL8?
Thanks..

 

[project86]

Sorry, no, I don't have an EL8 here to give it a spin. Should be a good match though, it drives LCD-2 and LCD-3 very well.

 

[HiFiGuy528]

  Updated review with iPhone 6 to m9XX connection pictures and description.  Have a great day/night everyone! 

 
Happy to learn you got it working.