regex - How to remove CTRL-A characters from file using SED?

Question

I want to remove all "^A" control characters from a file using SED. I can remove all control characters using 'sed s/[[:cntrl:]]//g' but how can I specify "^A" specifically?

Answer 1

to reproduce "^A" simply press Ctrl-v Ctrl-a this will reproduce the ^A in the file

sed -i -e 's/^A/BLAH/g' testfile

the ^A in that line is the result of me pressing Ctrl-v Ctrl-a