I just received my LS-100, serial number (100)014. This is one beautiful unit. The workmanship is outstanding. The front panel is quite sleek looking but there are tons of options for inputs, balance, etc.
I quickly cracked open the unit to start the tube rolling. The cover is secured to the base with no fewer than 24 screws. My first set of tubes are 2 NOS Sylvania JAN 6SN7GT / VT-231s and 1 5AR4 Tube RCA GZ34 FAT BOTTLE. I have not used these tubes in any other equipment so I will have to learn how they sound once they are broken in.