Hello Bigrock,
Thanks for writing in.
To give you an accurate answer, please can you send us the product link or ASIN number for confirmation?
With your help, we will find out solution for you quickly.
Best regards.
ASIN: B06WGVVHV1
I’ve since figured out that there are +dc and -dc terminal pads on the pc board for connecting 12V DC. The amplifier sounds GREAT driving my headphones. Thank YOU!!