TONE 2 Pro schematics

Hello All,…

I’ve found here Tone 1 (previously named Tone Board) schematics…

Tone 2 schematics here is empty, certainly due to Tone 2 is only comming on Q1 2021…

But what about Tone 2 Pro schematics ?
I haven’t found them nowhere…

Will Khadas Dev. Team distribute these schematics soon ?

1 Like

I think this is highly unlikely due to the usage of the proprietary MQA protocol.

I suppose the MQA nonsense is (hopefully?) software only implementation on the new XMOS chip and the schematics will be identical to the non-pro Tone2.

1 Like

My bad, I am glad that you are right. Creating an hardware MQA decoder would be an unnecessary effort that does not have any advantages (I guess?). Khadas states (at “The onboard XMOS XU216 processor enables bit-perfect, hardware-native, USB class II, asynchronous “unfolding” of MQA data for both web streaming and local high fidelity audio playback […]”.

I think the schematics will differ a bit between Tone 2 and Tone 2 Pro anyways, because the headphone AMP is missing (also at
“What’s the difference between Tone2 Pro and Tone2?
Tone2 = Tone2 Pro - Headphone Amp - MQA”

Perhaps, but ESS decided to do it anyway. LOL.