“What did they call the loudest knight of all?”/“Sir Roundsound.”

There are many fanciful names of King Arthur’s Knights of the Round Table. “Surround sound” is not one of the knights, but there are puns. “The stereophonic knight: Sir Round Sound” was posted on the newsgroup alt.games.mornington.cresent on April 6, 1998. “The knight who’s all ears: Sir Roundsound” was posted on the newsgroup alt.humor.puns on June 16, 2004.
 
“What did they call the loudest Knight of all?  SIR ROUNDSOUND!” was posted on Twitter by Bill Helton on May 23, 2019. “What did they call the loudest knight of all?”/“Sir Roundsound” was posted on Reddit—Dadjokes on July 15, 2019.
   
   
Wikipedia: Surround sound
Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener (surround channels). Its first application was in movie theaters. Prior to surround sound, theater sound systems commonly had three “screen channels” of sound, from loudspeakers located in front of the audience at the left, center, and right. Surround sound adds one or more channels from loudspeakers behind the listener, able to create the sensation of sound coming from any horizontal direction 360° around the listener.
           
Google Groups: alt.games.mornington.cresent
New game
Richard Vine
4/6/98
(...)
The adamant knight:    Sir Tenly Knot
The careful knight:    Sir Cum Spect
The entertaining knight: Sir Cus Performer
The doctor knight:    Sir John General
The fatal knight:      Sir Fit of Lampreys
The stereophonic knight: Sir Round Sound
   
Google Groups: alt.humor.puns
Specialty Puns of the Weak 06-16-04
Stan Kegel
6/16/04
(...)
The knight who’s all ears: Sir Roundsound
 
Twitter
Stuart Horgan
@ItsStuface
Dolby Digital are sponsoring a remake of the tale of King Arthur, with the addition of a new noble knight, Sir Roundsound.
1:55 PM - 16 Mar 2011
 
Twitter
Ro-Ro
@RoRo_of_2WAK
Replying to @Sir_Vive1
@Sir_Vive1 Everything you touch turns to gold…then platinum when Sir Round Sound gets his hands on it.  Knights of the turntable!
8:45 AM - 18 Apr 2013
   
Twitter 
✨emma ✨
@emmaabrun
thoroughly enjoyed Katy’s leavers show especially her character “sir roundsound” - the loudest of all the knights
3:28 PM - 15 Jul 2014 from Fenay Bridge, England
   
Twitter
D v y ™ æ
@davey_real
#Knights
The knight who’s all ears - Sir Roundsound
1:02 AM - 14 May 2015
 
Twitter
Corey the boy
@CorBrown
King: Knight, we heard of your deeds all across the land. What is thy name?
Knight: Sir Round Sound, my lord.
9:44 PM - 25 Jul 2017
   
Twitter
Bill Helton
@7colonel7
What did they call the loudest Knight of all?  SIR ROUNDSOUND!
1:40 AM - 23 May 2019 from Athens, AL
 
Reddit—Dadjokes
Posted by u/realfakedoors000 July 15, 2019
What did they call the loudest knight of all?
Sir Roundsound