MinedSafe
Head-Fier
- Joined
- Jul 14, 2013
- Posts
- 95
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- 14
15mW into 300ohms
Headphone amp is not powerful enought for my 880 250 im affarid. Will keep on looking
Heya
I recently purchased the Magni / Modi combo as my first true audio stack solution (@ work running out of an iMac via USB - driving Senn Momentums) and I'm in love! In fact, I'm going to be building a home listening rig and more than likely running some Schiit products there as well (but that's a different email...)
I'm not sure what to make of this issue : at times I can hear what seems like static (radio? dunno...) between the 8 and 11 "o'clock" positions on the VOL pot. This is sadly the exact range at which I listen. When I move the VOL higher or lower in the "o'clock" (i.e. pre-8 / post-11 ish) range, it seems to be silent. Also, the 'interference' does not get higher or lower based on VOL pot movement, so it seems like machine noise but I can't be certain. I'm wondering if I have a defective unit - a grounding loop issue perhaps? Or is this the norm?
I tried to research the issue online and found some similar issues on Head-Fi, but I still can't figure out a definitive answer.
Anyhoo, thanks for your time and your brilliant audio solutions - can't wait to watch your company thrive
It could be ground noise from the machine, or RF interference. Have you tried it on a different computer, or is there a cellphone or WiFi router nearby?
All the best,
Jason Stoddard
Co-Founder
Schiit Audio
Probably all of the above lol
I'll check some things - any clue why it only happens in a certain range of the knob?
thanks
Sometimes it'll just hit the volume pot exactly right--it can act as a rectifier for noise in the system.
If it's not system-related, or RF interference, we might have to change out the volume pot.
Hey peeps,
I've been using my Magni at work (iMac 3.4 corei7 > Modi > Magni > Senn Momentum) for about 3 weeks now and it's DRAMATICALLY changed my attitude about being (relatively) early to my office lol
Freaking wonderful gear!
Anyhoo, just wanted to share a resolution to an issue that arose during my first week (or so) with the Magni. I noticed some scratching in the VOL movements, as well as some seemingly RF static/hum at certain areas of the VOL range (especially 7-11 o'clock - which is my preferred listening lvl). The Frequency hum did not increase or decrease with volume levels appropriately, so I inferred from that there may be a grounding issue or machine signal transferrence going on. It was barely audible, and when music was playing I hardly noticed it, but it was definitely not optimal so eventually I decided to contact Schiit about the issue.
Jason responded as promptly as anyone could bounce back an email (as expected, really - their reputation precedes them! no pressure...) Here's the 'official' interaction if anyone's interested (hope he doesn't mind):
me
Jason
me (responding)
Jason (responding to my responding...)
Since this convo (as of this AM actually) first thing I did was move the power to a different wall socket (it was previously plugged into a UPS into another wall) - same RF issues only at different VOL range settings (like 11-2 o'clock). I had purchased a new TrippLite surge multi-outlet to try out if the wall shift didn't work. After plugging the Trip-Lite into the UPS (which was plugged into the original wall outlet) and reConnecting the M/M stack to the TL outlet...
No Static or RF hum!!
As an aside, having the new TL surge protector allowed me to move the M/M stack to a position on my desk where I no longer had to use an audio extension cable to run my Momentums to the stack (previously had to run around the iMac or the original cord would have crossed over my keyboard). I was planning to do this (move the stack to extended power) whether or not the RF signal issue was resolved, just to be able to purify the chain as I noticed while A/B'ing with the original cable VS cable+extender that the sound shifted - flattened a bit when the extender was in place.
Realizing this, (and because I really don't want to get back to my work current project right now...) I decided to just try the extender with the new M/M position juuuuuust to see if...
Static + RF hum = BACK!!
OK...so...being the fake scientist that I am, I proceeded to unplug the M/M stack and try to plug BACK into the original UPS without the extender in the chain.
...
(hold on - this takes a minute...) ...
No Static or RF hum!!
- - - - - TLDR VERSION - - - - -
The problem was NOT the Magni, was NOT the power and was NOT the usb > Modi chain (machine noise).
The culprit was the (sennheiser) audio extension cable./whip!
(BTW - the extension cable was from a pair of Senn HD448s, which I had been using at work before the Momentum upgrade)
Anyhoo, I'll be sending off an email to Jason soon with this development, but I wanted to post here in case anyone had a similar issue. Just to reiterate, I am beyond thrilled with Schiit and their attention not only to detail and quality, but their service is proving to be an industry leading standard as well.
Enjoy All The Audios!!
Any idea how long the extended lead is? I was using my Magni with a pair of DT770s which come with a three metre cable as stock, with that I was literally able to tune into a radio station!
The FedEx guy just dropped off my Schiit. I've got it hooked up and running, so far everything appears to be working great! There's just a small detail that's confusing me. I use a program on OS X called Boom for my EQing needs and with the Modi hooked up, my audio outputs look like this:
If I switch the EQ on Boom off or close the program altogether, it drops down and the Schiit USB Audio Device becomes selected. Obviously the sound changes fairly drastically as I'm no longer EQiing the audio. My question is: With Boom Device selected and the EQ "on" am I still using the Modi as my DAC or is it somehow bypassing that and using the DAC in my Macbook still for audio and simply bypassing the Modi? My headphones are obviously plugged into the Magni and the DAC is hooked up via USB so there's no other way for the audio to avoid going through the Modi short of Boom simply bypassing it somehow. Could someone confirm if this is the case? Also, if it is, is there a way for me to EQ still?
Thanks.
Good idea. Doing this yielded (at least as far as my ears can tell) an identical result. I guess it can be assumed that the Modi is in fact the DAC and that it isn't being bypassed?
The FedEx guy just dropped off my Schiit. I've got it hooked up and running, so far everything appears to be working great! There's just a small detail that's confusing me. I use a program on OS X called Boom for my EQing needs and with the Modi hooked up, my audio outputs look like this:
If I switch the EQ on Boom off or close the program altogether, it drops down and the Schiit USB Audio Device becomes selected. Obviously the sound changes fairly drastically as I'm no longer EQiing the audio. My question is: With Boom Device selected and the EQ "on" am I still using the Modi as my DAC or is it somehow bypassing that and using the DAC in my Macbook still for audio and simply bypassing the Modi? My headphones are obviously plugged into the Magni and the DAC is hooked up via USB so there's no other way for the audio to avoid going through the Modi short of Boom simply bypassing it somehow. Could someone confirm if this is the case? Also, if it is, is there a way for me to EQ still?
Thanks.
15mW into 300ohms
Just checked the website and here are the power specs... i dont understand where you got 15mW Maximum Power, 32 ohms: 1.2W Maximum Power, 50 ohms: 1.0W Maximum Power, 300 ohms: 260mW Maximum Power, 600 ohms: 130mW