Should be a fuse: 5*20mm 250V 500mA fast blew

Also the correct term would be "Assembled" in USA. :darthsmile:

Yeah tell that to the aboriginal canadians like the Inuits and Metis...

More or less from the specs of both amplifiers: Schiit Magni 3 Maximum Power, 32 ohms: 2W RMS per channel Maximum Power, 300 ohms: 430mW RMS per channel Maximum Power, 600 ohms: 230mW RMS per channel Topping A30 1551mW x 2 (PO=Hi, 6.35 output, RL=32Ω,THD+N=1%) 291mW x 2 (PO=Hi, 6.35 output...

Try setting the Windows 10 power plan to "high performance" and if that fix the problem then play around with the other plans or create one yourself based on the working one. 

Open it up and take a picture to see if there is some damaged components. Without that will be almost imposible to tell you something. 

@keanex please post some pics of the internals. :D

My unit doesn't :D

This is a pic from my M-Stage from 2012, seems they in Matrix had a different set of resistors back then,     

Btw, by any chance, have you plug a halogen lamp nearby your setup? last year i had to give away my halogen lamp because it messed up with my matrix, seems it cause some interference that doesnt allow the usb dac to sincronize and i had to do the same as you, turn the amp off and then on to fix...

Thats usually a consecuence of a bad usb port, cable connector or a vmware usb arbitration filter meesing arround. For de the first a the second use another usb cable an also switch to another usb port on your pc. For the third try to use the matrix on another pc. 

  Off topic warning:    Yummyyyy indeed :D

Take it off inmediatelly, that tape doesnt help to disipate heat, specially to the other components around the opamps. 

Quote:   Yup, it does.    Didn't read that. Thanx for the info. :D

Quote: But i believe you can't swap opamps right?

Quote:     LME49720HA or LM4562 would be a good start. 

Quote: Same here :D 

Quote: Yep, somthing like this :D  

    Look at those resistors!!! they are really burned.    Thats where the smell was comming from.    Here is mine: (an old picture actually :P )  

Quote: Maybe some resistor gone too hot. Can you take some pics from above without the up cover please? Maybe we can see "something".    PD: I love pics from internal circuitry :P

Quote:   That effect is nice actually. Specially with my beyer 990.  :D

Quote:   For a volume knob take a look here: http://www.ebay.com/itm/1-30x22-Aluminum-Hi-Fi-CD-VOLUME-TONE-CONTROL-KNOB-Bs-/180672233284

Have a look:   http://www.head-fi.org/products/matrix-m-stage-dac   http://www.head-fi.org/t/616771/new-matrix-m-stage-dac   http://www.headfonia.com/matrix-m-stage-dac/

Its good enought for the extra 30 bucks it cost. Unless you need the extra rca inputs. I got one Matrix with usb dac and i really like it, I put a couple of BB OPA602 on the dac and i got nice sinergy with OPA637 + class A bias mod. My Beyerdynamic DT990 sounds very nice! XD

Quote:   No chance to void warranty because Tamaudio sells opamps that need to be installed by opening the top cover.      Please post more pictures if you can.