You can contact 4rockers at email This email address is being protected from spambots. You need JavaScript enabled to view it.

GSM: +420 734 152 981.


Street and postal address for amp mods & service:

U Elektry 650/2, 19300 Praha 9


Company address (postal address):

Norde Systems s.r.o.

Ke Katerinkam 1403/1

149 00 Praha 4

Czech Republic


4rockers is the registrated trademark owned by D.Samal, founder of 4rockers/Norde Systems s.r.o.