My Krell Vanguard worked well with Roon until few weeks ago it failed to select Roon as current source.
I selected Net/USB as input source.
I also tried powered on the Krell both before after initiating Roon.
Nothing works.
I am running Roon version 1.4 (built 306) stable 64 bit on iMac as Roon Core.
My entire network consists of Airport Extreme and Airport Express.
Krell Vanguard is connected via ethernet cable.
Other Roon compatible devices are Ayre QX-5 and Squeezebox.
My second iMac is acting as Roon Bridge in the same system.
My Roon did show graphic of Ayre QX-5 and Squeezebox in the past and no longer so.
“This Krell product does not support convenience switching (automatic switching of the input at the start of playback).”
“It’s necessary to switch the source to “network” manually using the IR remote or front panel. If you try to start playback from Roon while any other source is selected, that error message is displayed.”
Based on the information in your report it sounds like you are switching the source to “network” first before playback in Roon (as suggested above) but please confirm. Additionally, can you please verify what firmware version the Vanguard is currently running?
Thank you for touching base with me and taking the time to verify the requested information! Both are very appreciated, @Somboon_Vorapanyasak!
Can you verify which version of the Vanguard you are working with (i.e “Krell Digital Vanguard” OR “Krell Vanguard Universal DAC”)? The reason I ask is because I did a quick search on the site and came across this thread:
What is interesting to me is what the representative from Krell mentioned in regard to the firmware version here:
"In order to get the benefits of Roon* you will need to run the software update from the front panel menu of your Vanguard product and also update the firmware in the internal digital module. If the firmware in your digital module is V2.7.6 or later, you can update it directly from the mconnect control app. Otherwise please click on the link below to download the instructions and update files. The latest software version for the Digital Vanguard is V1.16, for the Vanguard Universal DAC V1.04, and the digital module is V2.9.21. "