Removal of plug/wall outlet - hard connection ?

Thank you for your kind responses. I found the answer out for myself this weekend.
Sonics have more than improved, low level information is louder and clearer, bass notes have gained another octave, normal level setting on my preamp is about 75 now I have turned it down to 65. This improvement is greater than that the ones generated at my speakers plug ins removal.
The PCs are hardwired at the plug in end only, directly to the Romex feeding the outlet box in the wall, inother words both the Oyaide male AC plug 079 and Oyaide SWO-GXX wall outlet been removed, on all four of my amps.
The amps are still feed via the PCs but without being plugged in, but hardwired instead.
The 4 amps are still plugged in with the IEC at the end of the PCs. This type of connection can be also eliminated by the removal of both the IEC plug and socket, but this means entering the amp.
I have conducted this test only because of what I discovered after removing my speakers WBT plug and sockets.
And I am convinced that plug in devices do create some losses I have never thought could make so much differences.

Thx Terry

Stehno,
Thank you. I am truly convinced that the poorest connection in my entire stereo system is PC plug/receptacle connection.
I know by removing plug/duplex does not clean/condition the 120VAC 60HZ, but makes an airtight solid connection.

Hard wiring the Romex directly to the amp results in the poorest sound quality, the PC must be in the circuit which generates the best sound quality.

It is not possible to redo my dedicated lines with the materials you suggest.

Yes, I agree about the safety/code aspects, but I have found another way to acheive a connection that is extremely close to hard wiring.
I have made up a device that secures 2 pcs of the 079 Oyaide 15 amps plugs together, hardwired both to my PC and plugs into both outlets on the Oyaide GX duplex. The dual plugs are vertically supported and secured by a pc of wood going down to the floor and strapped horizontal to minimize movements.
This have doubled surface area electrical connections and sounds very close to the hardwired version.
The front end componets generate a lesser degree of improvements than the power amps.

thx Terry

After creating my own dual plug for my PCs I just found this site http://www.bogdanaudio.com/, where they manufacture a PC called SPIRIT DH with 2 plugs. Man, I wish I got this before reinventing the wheel, wasting my time and effort while I could be enjoying my playback system. Hopefully, many more manufacturers will catch on to this.
And, Carl109, Thank you for the corrections and I hope you will keep your good work up since I am not sure how many of us may be equipped qs you are. And yes I am trying to find a Music Dictionary as you suggested, which will help me post info about my upcoming experiments using 4 pcs of mono amps instead of 2 pcs, these will deliver 1.2 KW each.
thx terry