{"type":"firestarter.listing","listing":{"id":"lst_ucv3U9Vz","product_name":"TOPPING L70 Fully Balanced NFCA Headphone Amplifier","category":"Headphone Amp","description":" \n\nTOPPING's house sound\n\nThe L70 uses the same NFCA (Nested Feedback Composite Amplifier) module as the A90, giving it that TOPPING “house sound.” This, along with UHGF (Ultra High Gain Feedback) technology, provides excellent DC and AC performance, ultra-low THD+N, and an absurdly high dynamic range of 146dB.\nFully balanced\nThe built-in fully balanced amplifier circuit performs exceptionally well with both balanced and single-ended headphones. Additionally, the L70 includes four jacks to accommodate most headphones: 4-pin XLR balanced, 4.4mm balanced, 6.35mm single-ended, and 3.5mm single-ended.\nUltimate compatibility\nTOPPING designed the L70 to be able to power the vast majority of headphones. With high output voltage, it easily drives high impedance headphones. With high output current, it easily drives low impedance headphones. And with low output noise, it easily powers highly sensitive IEMs without creating background hiss.\n2 gain settings\nThe L70 has 2 gain settings, which cover a wide range of use cases from low-sensitivity full-sized headphones to high-sensitivity IEMs.\nDoubles as a pre-amp\nWith the L70 in pre-amp mode, connect a power amplifier to drive bookshelf, desktop, or floor speakers. With the included remote control, you can control it all from the comfort of your couch.\n12V trigger interface\nThe L70 comes with a 12V trigger on the back panel. This simple jack lets you create a network between any units that also feature a 12V trigger. When connected, it makes one product control the power of the other products in the system. When you turn on one unit, the rest of the system comes on automatically.\nR2R volume control\nThe L70 uses an R2R volume control composed of relays and resistor networks, bringing the advantages of precise control, longevity, and complete channel balance.\nSay goodbye to ground loop noise\nWhen multiple pieces of equipment are used in conjunction, ground loop noise can occur. Ground loop noise most often manifests as a buzzing o","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001489117420.jpg?v=1741112408","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486758124.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487249644.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486790892.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001485709548.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488625900.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486725356.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487806700.jpg?v=1741112409","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487577324.jpg?v=1741112410","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486364908.jpg?v=1741112410","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486823660.jpg?v=1741112410","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486954732.jpg?v=1741112410","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487020268.jpg?v=1741112410","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001485742316.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488724204.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001485840620.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487347948.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487282412.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488593132.jpg?v=1741112411","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488462060.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487315180.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001485807852.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486037228.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488986348.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487741164.jpg?v=1741112412","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487511788.jpg?v=1741112413","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487675628.jpg?v=1741112413","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486921964.jpg?v=1741112413","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486987500.jpg?v=1741112413","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488429292.jpg?v=1741112413","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001486889196.jpg?v=1741112414","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001485676780.jpg?v=1741112414","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001488953580.jpg?v=1741112414","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487610092.jpg?v=1741112414","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487839468.jpg?v=1741112414","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-headphone-amp-topping-l70-fully-balanced-nfca-headphone-amplifier-38001487642860.jpg?v=1741112414"],"price":279,"currency":"USD","in_stock":true,"inventory_qty":79992,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:00.106Z"},"share_url":"https://firestarter.network/l/lst_ucv3U9Vz","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_ucv3U9Vz' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy TOPPING L70 Fully Balanced NFCA Headphone Amplifier' and a budget_max comfortably above $279.00 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."]}}