1 x SteelSeries Arctis Pro High Fidelity Wired Gaming Headset, B - Web Order: 9411751 received without a power supply or volume mixer so not useable requested some type of remedy or replacement, even a 10-pound credit too allow an exchange for the correct headset on their store due to inventory, customer service unhelpful no product knowledge blame shifted to me despite the product incorrectly listed. super disappointing. - UPDATE for cex staff - there is a difference between a mixer and a dac/amp the product was graded as B ( with all accessories ) you advertised the product incorrectly and it should have been graded as F. still awaiting a fix.