Brilliant
The Lab 80 rumble-box has all the classic "idler" qualities of pitch and subtle timbre and the arm is actually perfect for the job - and with a solid cast headshell too. Some screws needed tightening and now the arm doesn't rattle around and retains low friction. even the auto-trip which has its roots in the 50's models seems to behave at side end.
The "Ed Saunders M55E" sounds lovely in it and the bass now behaves itself, unlike in the Dual 701, where the bass was a bit thick and indistinct.