Finally, let's take a look at the harmonics. Ahh, there's the famous brightness and harshness the TS9 is known for! Well, maybe not. The differences are only in the quieter even harmonics, which are a solid 30dB quieter than the odds. This gets exacerbated a touch as you increase gain, but even with it dimed, the difference is negligible. The Mini though, still remains a touch above the others.