Dear Mr Seymour,
We are very sorry to hear your comments on our service and after investigation we can see that you thought the DP4 dimmer pack you bought would be suitable for LED par cans, but LED par cans with in built DMX can be controlled straight from a DMX desk. With this in mind we have requested a listing revision from Amazon to reflect that these units are not compatible with LED units.
Please note that we are always happy to offer advice over the phone for our customers when they are looking to buy items from us so we would love the opportunity to regain your custom and offer our expertise and also a discount off a future purchase as a gesture of goodwill.
Kind Regards
Chris
01379 644 135