{"type":"firestarter.listing","listing":{"id":"lst_dHSybt9j","product_name":"ES Lab EHT-7 Electrostatic Headphones Energizer","category":"Headphone Amp","description":" \nEngineered for Safe, Transparent Electrostatic Playback\nThe EHT-7 unleashes the full potential of your electrostatic headphones while integrating with your existing speaker amplifier or headphone amplifier. Its exceptional driving capabilities deliver a natural and realistic soundstage, and preserve the ultimate transparency and detail retrieval that electrostatic headphones are famed for.\n\nInnovative transformer-based energizer design\n\nUnlike conventional transformer setups, the EHT-7 incorporates innovative design considerations and technologies, which ensures a reliable and safe handling of the high voltage needed to power electrostatic headphones. This amplifier is crafted for music enthusiasts seeking the ultimate performance from electrostatic headphones.\n\nJapanese-crafted transformers with exceptional high-frequency response\n\nThe step-up transformers have a fundamental role in shaping the sound of the EHT-7. The audio-grade transformers used in the EHT-7 are crafted in Japan, with each piece assembled by technicians to ensure the highest quality. The cores are made from grain-oriented silicon-iron steel from Nippon Steel Corporation. The effort put into the manufacturing process resulted in the excellent sonic performance of the transformers,with an exceptional high-frequency response.\n\nOptional Lundahl LL1630 transformer upgrade\n\nThe EHT-7 also offers the option of using Lundahl LL1630 transformers from Sweden, famed for their superior sound quality and measurement results by the community. It features a special audio C-core of Lundahl's production. Furthermore, the transformer is highly sectioned, and wound with a special low capacitance winding technique, resulting in an excellent high-frequency performance.\n\nMulti-stage clean bias power architecture\n\nThe EHT-7 utilizes multiple stages of power processing to deliver a clean bias supply for the electrostatic headphone for optimal performance. This approach stands in contrast to the outdated voltage multip","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-es-lab-headphone-amp-es-lab-eht-7-electrostatic-headphones-energizer-1204451861.jpg?v=1762906850","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-es-lab-headphone-amp-es-lab-eht-7-electrostatic-headphones-energizer-1204451860.jpg?v=1762906841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-es-lab-headphone-amp-es-lab-eht-7-electrostatic-headphones-energizer-1204451859.jpg?v=1762906838","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-es-lab-headphone-amp-es-lab-eht-7-electrostatic-headphones-energizer-1204451858.jpg?v=1762906847","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-es-lab-headphone-amp-es-lab-eht-7-electrostatic-headphones-energizer-1204479679.jpg?v=1762921236"],"price":850,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:56.992Z"},"share_url":"https://firestarter.network/l/lst_dHSybt9j","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 <your Firestarter API key>","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_dHSybt9j' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy ES Lab EHT-7 Electrostatic Headphones Energizer' and a budget_max comfortably above $850.00 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."]}}