Originally Posted by WalkGood
I agree, must have been typing away thinking of my customs, the isolation is good but I too can hear outside noises and conversations.
Edit: although when I use them with shure foamies they do isolate much better than any of the included tips.
That is a fair point, tips do have a lot of impact on isolation. I always use silicone tips because I do not like foam tips, but I bet your A151 isolate far better with Shure Olives than my mine do with Sony Hybrids. Picking up some aftermarket foam tips for the A151 would certainly boost the isolation, which is above average already.