【Overview】 These are semi-open monitor headphones with a clear sound, apparently driven by planar magnetic technology. They come with genuine replacement ear pads, EX-EP-RP-SUEDE, allowing you to enjoy the fit and sound tuning to your preference. They were used for a year and a half in a smoke-free, pet-free environment. They are being sold because the sound wasn't to the seller's liking, resulting in infrequent use. Please refer to the official website and review sites for specifications and sound quality details. [Search Keywords] ・FOSTEX T50RP mk4 ・EX-EP-RP-SUEDE 【Condition】 Overall, they are in beautiful condition. There is a slight indentation on the top of the headband from being hung on a hook, but there are no noticeable scratches, stickiness, or odors. 【Included Items】 ・Headphone unit ・EX-EP-RP-SUEDE (included, original packaging bag is missing) ・Original cable ・6.35mm adapter plug (no photo) ・Instruction manual ・Outer box 【Operational Check】 Sound output from both left and right sides has been confirmed. 【Important Notes】 ・The original cable is a special type with a 4-pole connector on one side; please ensure the 4-pole side is connected to the headphones. ・The included suede ear pads are genuine but can be difficult to install on the headphones. A plastic spatula or similar tool may be helpful. Please be aware of the above points before purchasing. 【Other】 Instant purchase is welcome. Please feel free to negotiate the price within a reasonable range (please provide your desired price). Due to the risk of product substitution, we cannot provide support for any issues that arise after arrival due to use.