Sennheisers use a proprietary connector on their removable cables and I don't believe they work with the Boompro.
Since the Momentum over the ear aren't compatible with the boom mic this would be the next choice. Im able to pick them up right now for $168
HD558
http://www.bestbuy.com/site/sennheiser-audiophile-over-the-ear-headphones/1700513.p?id=1218285361000&skuId=1700513&productCategoryId=pcmcat144700050004
What do you think?
would this be better then the A40 system?
hd558
vmoda boom mic
turtle beach acu ( could get the astro mix amp with the left over $$$ )
Sorry bud, Sennheisers still don't work with the Boompro.