I have had several sets of 5ks both 18 bit and 96/24 factory conversions and smiley face . My experience has been very positive with all all of these.

On my very oldest 18bit 5ks,(series 1) I once had a cone replaced about 5/6 years ago . These speakers are now over 20 years old and sound seriously good. Not worth big money second -hand, but still offer startling performance

Best regards Huw

#1 52KSE 218 LG OLED Sony BRay, Sonos Beam 2
#2 52KSE 218 Pana LED Zenith 2 Naim Muso2
#3 Teac X1 CD, G68, 562v3 518 568 556 G98DH 5K,5KHC 24/96,MS600,Systemdek I920, Ortofon M520, Synthèse Floating 2 Thorens TD160 Ortofon M15e Pioneer DAT Panny Plasma,Humax,BRay.
#4 Panasonic 4K LED Sonos Beam 2
#5 F80 MS200 iDock Sonos Move
#6 MS200 5K 24/96