{"type":"firestarter.listing","listing":{"id":"lst_ejUJXYEu","product_name":"CATALOG COLLECTION","category":"SOFTWARE","description":" 4 AMPS, 27 KEMPER PROFILES, AND TONE MATCHED IR’S ON HELIX PLATFORMSOriginally, Sears sold these as entry-level budget amps. Don’t let this fool you, though, they’ve been used by some of the biggest guitar legends, from Led Zeppelin to Jack White. \n\n\nSupro 566064 KEMPER PROFILES AND TONEX CAPTURES AND 1 TONE MATCHED IR FOR HELIX PLATFORMSRoughly the size of a lunchbox with just volume and tone knobs. Somehow, that’s all you need. Plug in and feel the lightning hit the room as legendary riffs are born. It’s the tiniest huge amp you’ll ever play.\n\n\nRoebuck (Valco built)3 KEMPER PROFILES AND TONEX CAPTURES AND 1 TONE MATCHED IR FOR HELIX PLATFORMSLike many other department store amps of its time, this unbranded amp was built by Valco in Chicago and has a Supro inside. This riff machine looks a bit like a toaster and absolutely brings the heat. \n\n\nSilvertone Twin Twelve17 KEMPER PROFILES AND TONEX CAPTURES AND 2 TONE MATCHED IR’S FOR HELIX PLATFORMSThis amp feels like it was made from cardboard and modified Fender guts, but it’s a sacred overdrive that you can hear on countless iconic records and is one of my top ten favorites. The JHS Twin 12 was based on this exact amp. TS = 1984 Ibanez 808+ = \"$500K Klon\"\n\n\nGretsch Octal (Valco built)3 KEMPER PROFILES AND TONEX CAPTURES AND 1 TONE MATCHED IR FOR HELIX PLATFORMSThis Octal tube amp shines in the studio when you need something different. Though branded as Gretsch, it was built by Valco. I dimed it with a Telecaster while tracking rhythm guitar, and it sucked out all the air in the room in the best way.TS = 1984 Ibanez 808\n\n\n ** Kemper / Helix Amp Packs are digital software products.  All sales are non-returnable, non-refundable, and final.  These products only work with the Kemper or Helix platforms. ","images":["https://cdn.shopify.com/s/files/1/0610/7122/9028/files/Software_Box_CatalogCollection.png?v=1755543451","https://cdn.shopify.com/s/files/1/0610/7122/9028/files/GretschOctal.jpg?v=1755543451","https://cdn.shopify.com/s/files/1/0610/7122/9028/files/Sears699032.jpg?v=1755543451","https://cdn.shopify.com/s/files/1/0610/7122/9028/files/SearsTwinTwelve.jpg?v=1755543451","https://cdn.shopify.com/s/files/1/0610/7122/9028/files/Supro56606.jpg?v=1755543451"],"price":19,"currency":"USD","in_stock":true,"inventory_qty":29997,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:09.189Z"},"share_url":"https://firestarter.network/l/lst_ejUJXYEu","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_ejUJXYEu' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy CATALOG COLLECTION' and a budget_max comfortably above $19.00 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."]}}