upgrade op amp for my Venture Craft Go Dap DD 9 Volt and 12 Volt LE - Rudi0504

After upgrade op amp for my Venture Craft Go Dap DD 9 Volt and 12 Volt LE now is time to go back to my stacks set up in year 2011 and 2012

Source :
Iphone 5s

Dac :
VentureCraft Go-Dap DD 9 Volt amd LE 12 Volt

pre amp :
wagnus tuhe pre amp Valvola

amp :
wagnus epsilon S

cable :
wagnus IC ice sword
Cy AX 18 awg Red IC

earbud :
Cy Ax Cardas Golden
the only one earbuds sound like headphone
with deep bass and very good impact and speed
Sweet analog mid
High sound like tube amp can produce high very analog
Wide soundstage

I need more burn in to open up the high than is perfect earbuds