IM50 or VSD3S
Which one did you order? I regular $20 OFC cable version? I could be mistaken, but from pictures the one with an angled connector has a silicone jacket while the one with a straight connector has a threaded jacket? Any sound improvement or just a comfort improvement with a same sound on your IM50?
I ordered and waiting to receive their silver-plated version. I have no doubt it will brighten the sound, but I'm worrying about microphonics. It looks similar to FiiO's SE cable and that one is horrible with cable noise. Keeping my fingers crossed it's not the case with this one...
I'm using large hybrid tips (sony look-a-like from ebay). That's the only way I can get a good seal to feel that bass! I wouldn't say these have high sub-bass quantity, but I can definitely hear/feel it, and typically recommend these as a good gym headphones since you get both a pumping rhythm and great vocals, along with a tough RC. Btw, I'm using Hidizs AP100 DAP which is like a combo of DAP+amp (also uses high resolution Cirrus Logic chip set). Perhaps that plays a role in it?
The only way to get a good seal is putting a spacer which has 0,8-1,2 mm thickness. You will have a good bass, treble and bigger soundstage. People who find their IM50/70s not isolating very well and uncomfortable can easily do this spacer mod. All you need is a sharp blade and a pair of tips that you don't even use. You can find all the information several pages back.