to make sure all connections are correct and secure, after that it's time to return it. Good luck.
In recent months I purchased 2 home stereo amps. They both have power but the sound is distorted with severe cracking and popping sounds- almost like a blown speaker sounds. I checked the fuse on the first and it was fine. I have not opened the second (Denon). I've only hooked it up to phono and know the phono works fine. Any suggestions? Many thanks.

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