Finally listening to the OG Chu for the first time today. It honestly slaps for rock and pop, after some EQ, swapping the tips for Lan narrowbores.
Code:
Preamp: -1.1 dB
Filter 1: ON LSC Fc 85 Hz Gain 1.0 dB Q 0.50
Filter 2: ON HSC Fc 2800 Hz Gain -2.5 dB Q 0.50
In this state imaging cues are extra present, it's a fun listen for stereo effects and reverbs and other production flair. Also extra good pitch intelligibility, good for music transcription. Still some treble excess that makes me want to try a filter mod before considering them an allrounder. Only a recommendation for specific cases, it might have been worth it for me snagging these before they run out of stock. But out of the box it's a flawed set.