I'm using eartips I found on a pair of Dollar Store earbuds. They look like JVC Spiral dot tips but with a larger dameter opening, more rubbery too. I also tried the CKW1000anv with the JVC's Spiral Dot tips and Hifiman RE0 Small Biflanges. Its a toss up of your preferred signature with these tips but they all sound superb. Spiral Dot tips surprisingly sound the worst of the bunch. Anyways I have to give the CKW1000anv a 5-Star rating for the incredible performance it's shown, namely Treble Extension capabilities of the driver, im still in awe, its...