{"type":"firestarter.listing","listing":{"id":"lst_m3uwbGv1","product_name":"Apos x Community Gremlin Tube Amp","category":"Headphone Amp (Tube)","description":"Class A and fully-balanced at an unheard of price\nThe Gremlin tube headphone amp is a little monster with a ferocious bite. With 1250mW of output power, it has the muscle to drive most headphones that cross its path. It may be ugly, naked, and small, but don't judge a beast by its cover. For just $120, you're getting a Class A, fully-balanced tube amp with matched tubes—something unheard of at this price. It delivers sound that’s sumptuous and lush, with musical tonality and heart-melting mids. Once it gets its claws in you, you won't want it to let go.\nFeeding the beast: Tubes + transistors\nThe Gremlin is a hybrid headphone amp that combines the precision of transistors with the warmth of vacuum tubes. While solid-state amps (which rely solely on transistors) deliver accuracy, they lack the soul of tubes. In the Gremlin, the vacuum tubes in the pre-amp stage flood your music with rich harmonics and a warmth that solid-state amps can’t touch.\nAlways hungry: the Gremlin's Class A appetite\nThe Gremlin is a predator that never rests. With a Class A design, it's always on the hunt, keeping the current flowing without pause. Other amps flip their transistors on and off to save energy and keep cool—efficient, sure, but prone to distortion that muddles the sound. Not this beast. Its relentless operation means every note is delivered with the raw purity and ferocious detail that only Class A amplification can provide.\nA poised predator: a fully-balanced amplifier\nWith a fully-balanced design from input to output, the Gremlin cancels out the kind of hums, buzzes, and interference that can creep in with unbalanced systems. This means you get a cleaner sound—especially important if you're using sensitive headphones or high-end equipment that picks up every little detail. The Gremlin gives you the best of both worlds: the warm, rich tones of tube amplification with the minimal interference of balanced design. \nMatched Ray Tubes: the Gremlin’s natural weapon\nThe Gremlin comes ar","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-1211883443.png?v=1766082157","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41839950856428.png?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41631694553324.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41631694487788.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41631694455020.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41830721257708.png?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41631694258412.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41631694389484.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41325578485996.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41325578518764.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41821946446060.gif?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41821951197420.gif?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41857724481772.gif?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-41857726021868.png?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-1172385578.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-1172385579.jpg?v=1766072841","https://cdn.shopify.com/s/files/1/0225/2721/3642/files/apos-audio-apos-headphone-amp-tube-apos-x-community-gremlin-tube-amp-1203584643.jpg?v=1766072841"],"price":120,"currency":"USD","in_stock":true,"inventory_qty":89991,"dynamic_pricing":false,"listed_at":"2026-06-20T16:25:58.231Z"},"share_url":"https://firestarter.network/l/lst_m3uwbGv1","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_m3uwbGv1' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Apos x Community Gremlin Tube Amp' and a budget_max comfortably above $120.00 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."]}}