{"type":"firestarter.listing","listing":{"id":"lst_MeMERJjC","product_name":"Kiwi Ears Quintet","category":"Earphones/IEMs","description":"\n\n4 Driver Types, 5 Drivers per Side\nThe Kiwi Ears Quintet utilizes 4 different types of drivers, consisting of 1 Diamond-Like Carbon (DLC) dynamic driver, 2 balanced armature (BA) drivers, 1 planar magnetic driver, and 1 piezoelectric (PZT) bone conductor. With a total of 5 drivers per each ear, the Quintet delivers extremely high-resolution audio comparable to professional studio monitors. A large 10mm DLC driver was selected as the sub-woofer due to DLC’s high responsiveness and tensile strength, which pumps out impactful bass slams, but with fast decay speeds. 2 Knowles balanced armature drivers deliver natural and resolving mids, a classic example of why balanced armatures are beloved in the industry.\n\nWe are excited to announce the utilization of a new planar tweeter system in the Quintet. The MPT (Micro Planar Transducers) is a new driver technology for the IEM industry. These new tweeters feature the classic planar magnetic driver circuitry but with a smaller footprint for use in hybrid designs. With an extremely low noise floor and high output capacity, these planar magnetic drivers deliver crisp and detailed treble that is unique from typical BA or EST (electrostatic) tweeters used in most IEM’s today. Finally, a piezoelectric driver was utilized to deliver ultra-treble microdetail and air. In R&D testing, the presence of the PZT driver significantly enhanced perceived audio resolution, texture, and sound stage, making it a no-brainer to be an addition in the Quintet.\n\nKiwi Ears Micro Planar Transducers (MPT) Drivers\nAchieving a high quality ultra-treble has been a challenge in the IEM industry. BA drivers are compact, but offer low ultra-treble extension, and are also limited by their output and timbre quality. EST drivers are difficult to utilize in multi-driver setups as they have very low output, often being masked by other drivers’ volumes. Additionally,  EST drivers can sound very metallic at high voltage, resulting in an unnatural presence. For ","images":["https://cdn.shopify.com/s/files/1/0040/7201/3924/files/IMG_0779.jpg?v=1686870633","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/IMG_0825_dd06777f-8625-4019-bd81-5c6b0b292000.jpg?v=1686870633","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/IMG_0759.jpg?v=1686871422","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/IMG_0750.jpg?v=1686871422","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/IMG_0786.jpg?v=1686871422","https://cdn.shopify.com/s/files/1/0040/7201/3924/files/1_1_1.png?v=1687744673"],"price":219,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:44.759Z"},"share_url":"https://firestarter.network/l/lst_MeMERJjC","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer ","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_MeMERJjC' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Kiwi Ears Quintet' and a budget_max comfortably above $219.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}