I may just have to read the menu now to see what’s the deal.
The hardware supports turning off the Ethernet, USB and each I2S input independently. Right now the UI doesn’t present a way of controlling that, but it will. The Mk II isn’t as sensitive to extra/unused connections as the Mk I. It’s purely your choice whether to disconnect features you aren’t using at the time.
A good question:
There are some temperature sensors around that aren’t being monitored at the moment, but the FPGA can dissipate more heat efficiently than its various power regulators can provide, and those regulators have over current sensors/foldback. Similarly, for the reclockers and opamps. A part of this heat spreading comes from using 2 oz copper for all layers and having ground filled signal layers. Heat is spread out pretty efficiently. Also FWIW the FPGA is still working properly on the failing units since the currently selected input, sample rate and sample width are being correctly displayed.
Of course, there could theoretically be a short (solder bridge, etc) anywhere on the board causing a hot spot, but it’s unlikely that it would be close enough to a temperature sensor to notice it.
But we will definitely use some of them in remote debugging if we can’t reproduce the problems at PS Audio or here at my house, and also for the final release software.
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Soooo . . .
I’m apparently down the list for a beta unit and patiently awaiting the call.
But I’m wondering if the stop-play and heat issues being encountered will be holding up shipping of the balance of the beta units while some troubleshooting takes place?
Ted may not know, but someone at PS Audio should.
OK anyone figured out what the red light above the 80 in the photo is for??? Not in manual.
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One would think green when receiving a signal and red when not. Just my guess but I’m getting a green light with optical and still no sound from any input. Unit is off now and hope can be fixed out in the field without shipping back and forth nightmares.
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Like the DS Mk I, roughly a red light means the currently selected input isn’t connected/has no data. A green light means the connection is good.
For USB a green light indicates that a USB cable is connected to a USB host. A red light indicates that there’s no connection to a USB hose.
For S/PDIF, AES3 and TOSLink the green light means that there’s an active signal on that input with a valid sampling rate and no bad flags from the AES reciever.
For I2S a green light should mean that there’s a PS Audio I2S source connected. I believe that at the moment it indicates a valid signal present.
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My streamer works perfect with JR via I2S so must be an issue with the input it self, just guessing of course. I tried both I2S inputs with both having the red light.
The only inputs I have been using are the two I2S, they are working for me.
I started with streaming, then a regular CD, then a Data DVD with Billie Holiday (so nice!). I will go back to CD soon to see if the problem will reoccur.
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I feel like it takes less volume on my BHK Pre to get the same loudness that I got from the MK1
anyone else feel the MK2 Is “louder” than the MKI?
The balanced outputs of the DS were +2.828VRMS full scale, about 3dB below the “standard” 4VRMS. The Mk II is 4VRMS at full scale. One half of those values for unbalanced outputs.
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Thank you Ted.
Guess that confirms what I’m hearing
Thank you for all your work on this
Thanks Ted. I just discovered a feature of the light. I am using the two I2S inputs. One for my Optical Rendu streamer/opt isolator which has an I2S output and the second is for my PSA CD transport…
When I’m listening to the streaming side the light is red and when I’m listening to the CD player side it turns green. So a red light is on all the time I am playing the streamer side. It doesn’t indicate any malfunction that I can detect since the music sounds fine.
My first signal feedback is a little odd. When I start a streamer side music session just before the music starts I hear a very low intermittent popping sound. In fact, it sounds just like when you put a record on. The lead in grove noise from dust in the grove causes a little popping static before the music starts. Did you engineer in a vinyl analogue experience? Just kidding.
Kenneth Eis
970-305-2038 cell
I thought the same thing but when I used an SPL meter, both units were reading the same SPL output but the MK2 still sounded louder. I was only using an SPL meter on my phone so not sure about how accurate it is. Then again, same meter used with both units so even if not accurate, the comparison should be.
The 3dB Ted mentioned makes sense and keeping an eye on constantly fluctuating SPL readings isn’t all that accurate, especially with my eyesight,
If you have auto input select on, then the intermittent popping sound is fixed in the FPGA software I’m testing now.
It would be nice to know if you are getting such noises with the input explicitly selected.
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PS. Ted your comment that a PSAudio source gives a green light is correct. The red light is when a non PSAudio source (I2S Rendu streamer) is on.
Kenneth Eis
[Edit: I deleted your cell number - Ted]
I personally am conditioned to respond to a red light as a negative condition not positive.
To me, if there’s an acceptable connection, no matter the brand, the light should be green.
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I agree but either way it should be clarified in the Owner Reference. No mention of the light at all.
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Exactly what I’m thinking.
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Hope yours dosnt have issues.
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