Almost new, beautiful and in excellent condition as you can see in the photos. For reference, I replaced the cartridge and headshell on a DP-500M with the standard one. ACD-45 (for DP-1300M/DP-1300MK2) Optional Counterweight Thank you for purchasing the DENON counterweight ACD-45. ・ACD-45 is a counterweight for heavy headshells for the DP-1300M/DP-1300MK2. The compatible cartridge weight (including headshell) is as follows: ・ACD-45A (small weight): for 20-28g ・ACD-45B (large weight): for 26-37g ・For installation instructions, please refer to the "Adjustment" section of the record player's instruction manual. Caution Depending on the headshell and cartridge you use, the counterweight may hit the dust cover during the playback of the inner grooves of the record.