[pervysage]

Found another finicky thing about the M11 after much experimenting.
 
Sounds best when warmed up for at least 1-2 days. However, leave it on too long (let's say a week and a half) and the sound quality starts going down (increase in brightness, reduced bass). Do a quick 30 second restart (off and on) and sound is back to normal and good for another week or so.
 
This is not just placebo either... I am not imagining things lol. I have observed this same pattern occurring so many times now.
 
Must be the reason why a while ago I read something about Kingwa suggesting a restart every now and then to reset the DSP if you are a person who keeps the M11 on all the time.

 

[bballas]

Add independent 2rail power tcxo, isolate digital and audio transformers(disturb each other)
result-
No need warm up,sound detailed in a first minutes!!

 

[patrikh]

  Add independent 2rail power tcxo, isolate digital and audio transformers(disturb each other)
result-
No need warm up,sound detailed in a first minutes!!

Does this affect the DAC-side or the amp? Say if you were running a separate dac would you need such a long warm-up? I am not sure since I have my setup running pretty much all the time. I should make some tests.

 

[munce31]

  Anyone experienced channel imbalance? Happened twice to me today. Left channel gets couple dB weaker. Returns to normal when adjusting volume.

 
What headphones are you using?
 
Are they made of primarily metal construction by any chance?
 
When the channel imbalance occurred, did you hear the volume relays change?

 

[LancerFIN]

   
What headphones are you using?
 
Are they made of primarily metal construction by any chance?
 
When the channel imbalance occurred, did you hear the volume relays change?

Happened with Audeze LCD3. No relays clicking. Other channel just dropped couple dB. Happened again yesterday. Never happened on my other headphones before. I was using balanced connection. It takes some fiddling with the volume knob to get the channels matched again.

 

[LancerFIN]

Actually now I get channel imbalance with all headphones. It starts around 30-40 and lower I go the worse it gets. At 00 right side is still playing at decent volume while left side is completely silent.

 

[munce31]

  Actually now I get channel imbalance with all headphones. It starts around 30-40 and lower I go the worse it gets. At 00 right side is still playing at decent volume while left side is completely silent.

Faulty gain stages?
 
I think its best to speak to Kingwa/Grace. 

 

[pervysage]

What do you guys think of the Singxer SU-1?

Would it be a significant upgrade over the Amanero USB?

 

[munce31]

What do you guys think of the Singxer SU-1?

Would it be a significant upgrade over the Amanero USB?

 
I've just ordered a SU-1 from Kitsune Hifi (highly recommended). Should be arriving Monday. 
 
From what i've read, there seems to be unanimous agreement that the Singxer is a big step up from the Amanero.

 

[drez]

That will likely push me over the edge..  I was going to wait and see if Kingwa is going to release a new XMOS usb interface, but the SU-1 is calling.

It's probably a good bet. I don't think there's much wrong with the existing XMOS that would require upgrade on their part.

A couple of people have tried installing the F1 internally (see m7 thread) but it's far from straightforward and apparently requires mods and external power to approach SU1. I was going to save money on HDMI cable - or that was the theory haha.

 

[patrikh]

I may be turning crazy but Surface Book's audio seems sublime with HEK, yes a laptop! Tops my whole system in clarity, positioning and highs. This may have to do with getting so used to NOS sound or there must be something seriously bottlenecking my system. I will shut down my system because it's been running for more than a week without cooldown and try tomorrow again. I will also compare how my cans sound with M11's dac. I urge anyone interested try a surface book in a store with your own cans and prove me wrong.

 

[patrikh]

Plugged my dac to the laptop and got some interesting results. My desktop is seriously pushing my audio down.

 

[Bombik]

F1(or SU1) is big improvement over Amanero. I took the journey -> USB32, Amanero and now F1  on DAC19/NOS.
F1 is beast, completely in different league..

 

 

[defbear]

F1(or SU1) is big improvement over Amanero. I took the journey -> USB32, Amanero and now F1  on DAC19/NOS.
F1 is beast, completely in different league..  

I concur! I have Master 11 with Amanero. The SU-1 is much better at everything. Now can use the I2S input. The sp/dif output on the SU-1 is incredible as well.

 

[munce31]

Hi All,
 
I recently purchased the Master 11 HDMI i2s kit.
 
Can anyone tell me where the 3.3v line needs to be soldered? I can't find an obvious point on the dac board. A picture would be greatly appreciated.
 
Thanks in Advance,
Vince