There is a comment after the review looking for some L-2 measurements. I thought I'd post some here. These are taken via RMAA at ~125mW output, which is 2Vrms into 32 ohms. That is very very loud -- louder than anyone should ever listen. When the level is more resonable, much of that drops into the noise floor, so take these as worst case. At any rate, THD is ~0.14% and IMD is ~0.12%. (The 60Hz bump is in the soundcard.)
THD:
IMD: