The Sony WH-CH510 have good imaging. Their weighted group delay graph shows that almost the entire range is below the audibility threshold, so they should have a tight bass and transparent treble reproduction. Our unit’s L/R drivers were well-matched in amplitude and phases, though they were only decent with frequency mismatch, so some objects (voice, instruments, video game effects) may not have the most accurate placement. It’s worth noting that these results are only valid for our unit, and yours may differ.