Oh man, I can understand that with the big ears.
I solved this like this:
1.)
Cut off approx. 1mm from an unused eartip.
2.)
This “rubber spacer” is pushed onto the nozzle.
3.)
Put your preferred tip over it.
4.)
vs.:
The sonic advantage that can arise is that the sound stage is very often enlarged. Because I have to solve this on some in-ears 
So two birds with one stone, so to speak.
Very interesting solution. I’ll give it a try.
I didn’t pick up on the fact that it’s the tips that have the notches. I remember reading about the two depths but thought it was on the nozzles (which obviously don’t exist). I’ll try that.
Maybe I should read the instructions? Naw 
Both pieces of advice worked! The ring keeps the tip from sliding down, so I can test non-Senn tips and the first notch on the Senn tips provide a good seal. Now to A/B…
First impression is that the upper frequencies are doing what I hoped a good DD would do. Seems like a seamless transition into the highs. No highs appear to just be floating up there.
Might be also worth trying the regular AZLA SednaEarfit (not the short ones, and not the Xelastic nor Crystal) as they have stems that are a bit longer.
Check out our latest video on the Sennheiser IE 900 In-Ears! Please drop us a comment on the video, let us know your thoughts, and share with someone who might be interested. Thanks for your support.
This was a fun shootout between two terrific IEMs! Hope you all enjoy the video and have a great rest of your weekend guys!
anyone find a good cable for these?
I was just about to ask! I’d love to see some nice custom cables to go along with these.
Check Xinhs out. I got a custom cable done for my IE600 for less than $40 (depends on the cable you want) and you get to choose the total length, the hardware color and where it splits so its a custom fit for you
I asked them before but didn’t get a clear answer, ended up ordering a NiceHCK cable that has the right connector
Thats weird, they got back to me pretty immediately and said yes we offer a sennheiser MMCX option. It was $6 extra though
easiest way to communicate with them is to show them pics of what you want.
yeah I made a little drawing showing the lengths I want. I have done this twice now and have not been disappointed either time
Yuh, brise is an excellent choice
