artio CU2 Includes genuine 4.4mm balanced cable. All accessories included. Operation confirmed. artio's flagship earphones. Some notable features, but the recommended points are: 1. Wide spatial expression, like headphones. 2. Deep, immersive low frequencies, with high resolution in the upper frequencies. The low-frequency expression is especially recommended. 3. Controls specific frequency ranges that can be harsh on the ears, designed to reduce listening fatigue. These are quite unique earphones. There are review videos on YouTube, so check them out if you're interested; they might be helpful. They seem to suit a wide range of genres: Rock, Math Rock, Techno, EDM, HIPHOP. Jazz and classical due to the soundstage. Of course, live albums too. Also, as mentioned in reviews, they pair very well with pre-digital recordings. I discovered new aspects of the music. This is just my personal opinion, so take it with a grain of salt. Using a balanced cable clearly widens the soundstage. I think these earphones greatly benefit from balanced connections, with a change in the perceived sound localization. Listening with a high-output headphone amplifier is also enjoyable. Purchased from an audio shop along with the 4.4mm balanced cable. Used for approximately 40 hours. Some signs of use, but in good condition. Only a small part of the outer box is peeling. Shipped anonymously. Thank you. Below are the specifications: Driver Configuration: Dynamic type, 10mm diameter Impedance: 32Ω Sensitivity: 109dBSPL/mW Frequency Response: 20Hz～20kHz Cable Specifications: Connector: Made by Nippon Dicks Pentaconn EAR connector Plug: 3.5mm 3-pole stereo mini plug (L-shaped) Cable: Core wire: OFC wire Sheath: Spiral cable Cable length: Approximately 1.2m Body weight: Approximately 24g shure sennheiser daruma audio wired piyahon final sivga