Signalyst DSC1

[2A3SET]

Actually the P28 mode without the relay works perfectly on DSC3, much much better than P27 with DSC2 (I prefer the very old firmware with DSC2 but can't find the backup anymore)

 

[Geosto]

That is how i use the DSC3 with pin28 and no relay.
I can not help you with the firmware, the version i use is the 24.12.2023 and is working good.

 

[2A3SET]

Made some modification to DSC3,

Swapped C20/23/59/75 with Rubycon 0.22u 232-16MU224MZ22012
Paralled Rubycon 2.2uf 16MU225MB23225 at the back of C70/71/72/73

Very positive, less harsh and more organic sound.

 

[adiaz]

I use dsc2 with power supplies salas ubib 1.3 and Xing U30. The change to these power supplies and from Amanero to Xing the sound improved a lot.