Price negotiable. Pioneer DJ's performance controller DDJ-SR, compatible with Serato DJ. - Model Name: DDJ-SR - Brand: Pioneer DJ - Compatibility: Serato DJ - Control Functions: Sampler, Effects, Loop Function - Output Terminals: Master Output, Headphone Output Thank you for viewing. I purchased this from Power DJ's 8 years ago. While it hasn't been used extensively, both start buttons are not working well. Specifically, they don't respond to a light touch and require a firm press to activate. Due to the nature of precision instruments, returns are not accepted. Please purchase only if you understand this. Please understand that a considerable amount of time has passed since the purchase.