Lovely bit of foo in a box.
From the manufacturer’s website -
FRANCINSTIEN T-Sym is a third-generation stereo correction process based on considering two-loudspeaker stereophony to be a flawed wavefront reconstruction system. Using this theoretical analysis, FRANCINSTIEN T-Sym generates correction signals which compensate for conventional stereo’s spatially-aliased sound-sources at high-frequency. The result is a stereo image of unprecedented clarity and solidity
I bought it for £250 + P&P.
Yours for £110 delivered.