Yesterday, a person am busy with a piece of work for, came round and dropped off a sort of thank-you gift after he'd asked me what type of thing I would appreciate, and, aside from just a decent, healthy keyboard, he had gotten hold of a set of really decent, in-ear/ear-canal earphones. Now, firstly, in terms of using these with things like audio gadgets relating to forms of sensory substitution, etc., I suppose it's a form of trade-off, in terms of their noise cancellation blocking out surrounding/environmental noises, but, on the other hand, the levels of audio clarity they provide are, to just be honest, amazing! <smile> Now, think have tracked down a sort of product page relating to them, and, yes, they're quite pricey for a set of small earphones, but, still - think these are the details: Sennheiser CX302 ear-canal earphones. From what I think is the relevant product page from the one local supplier: https://www.mercurymusic.co.za/Sennheiser-CX300II-Black-Ear-Canal-Phones high passive attenuation of ambient noise Frequency response (headphones) 19 - 20000 Hz Impedance 16 Ω Sound pressure level (SPL) 113 dB Jack plug 3.5 mm (angled) Cable length 1.2 m Anyway, the other trade-off is, if we plan to really focus on the audio output of electronics, then, something like this is the subject matter of an old song - if you want to do it, do it right! Stay well Jacob Kruger Blind Biker Skype: BlindZA "Roger Wilco wants to welcome you...to the space janitor's closet..."