The old Audial DIY stuff is not available anymore.

 

At this time you can however check out AYA II 2014 DIY edition. 

AYA II 2014 DIY edition interest check

 

Also, you can still find some projects online.

OPA861 zero-feedback output stage of AYA II

Balanced DAC I2S interface project

 

For regularly available Audial products, please check this page.