The Poison pairs very well with the HD650, it's been a long time since i heard the 600 as i don't have a pair.
Yes, the wait currently is around 8 weeks, i am currently making my Venom orders, so once these are done, i should be able to cut the wait down significantly.
We do have some random headphone and IEM cables in stock currectly to ship right away, unfortunately no more Shure IEM cables, one of my dealers took all of them. We have a few of Westone pins in the Poison, couple left of the Widow, a Virus Fitear, few of Scorpion and Viper Westone and and a couple TF10 cables.
Unless you had an interconnect with your IEM cable, then it has already shipped.
Thank you kind sir for addressing my concerns. Its great to hear it right from the horse's mouth. I will now wait patiently. Having visited this thread on numerous occasions, I did expect a long wait.