Need a heavy duty receptacle

Porter Ports.

Hubbell duplex receptacle. See page 6

For extra holding power install the duplex receptacle with the equipment ground up ^ .....
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Thanks for your suggestions. I did just order 2 of the Porter Ports from Albert.
Still not sure I want to part with the Solist so I'm holding off on that one. Besides, the Soloist is behind my audio rack and basically undisturbed except for when I might change cabling around. Still annoying to me that it doesn't take much at all for the PC to back out. The 2 I'm replacing now are right in the path of that dreaded vacuum and the PC's are so stiff that any slight movement will cause the PC to back out.

Jea48,
Interesting mention about installing the outlet with the ground up. Curious about how that "holds" better?

Get one of those 3" angle type "L" brackets.
Mount it above your outlet to the stud. Then attach a cable tie to your power cord from the "L" bracket.

Interesting mention about installing the outlet with the ground up. Curious about how that "holds" better?

With the ground facing up there is a greater mechanical downward motion resistance of the ground pin of the male plug than there is with the ground facing down.

Mechanically the ground pin resists downward pressure from the weight of the PC more than it will with the ground facing down.

In the case of a straight out pulling motion, tension pressure resistance, there is no difference.
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When is somebody going to come up with a "twist lock" power cord and receptacle for us crazy audio people. You know like they use for pools.