{"type":"firestarter.listing","listing":{"id":"lst_Bk0DpXdo","product_name":"Fundamental Series Tremolo","category":"Pedal","description":"For the Fundamental Series, we challenged ourselves to design a set of pedals with the tonal integrity that’s required to live on a professional’s pedalboard, but with simplified controls friendly enough for even the newest effect pedal users. Each Fundamental pedal has three faders for tweaking the sound and a three-way switch for changing pedal modes. The result is a line of pedals that will keep you covered from your first band practice all the way to a sold-out arena. Designed and assembled at Walrus Audio headquarters in OKC, OK. \nFundamental Tremolo\nThe Fundamental Tremolo is a classic optical tremolo, giving you that iconic chewy movement. With three wave shapes to select from, you can get sounds from smooth and soothing to glitchy, wild, and crazy.\nRate – The Rate slider sets how fast or slow the LFO is oscillating. A lower rate gives a gentle wavering texture, while a higher rate gives a shimmering and pulsating effect.\nDepth – The Depth slider controls the strength of the tremolo effect. At a lower depth, the volume oscillations stay closer to the input for a more subtle movement. At a higher depth, the tremolo becomes more pronounced with the volume are greater.\nVolume – The Volume slider sets the overall output volume of the pedal.\nSlide Switch – The slide switch allows you to change between three distinct oscillator waveforms:\nSine: Sine gradually adds and decreases volume smoothly for an easy and subtle tremolo.\nSquare: Much more pronounced than sine, square wave has a more on-off pattern.\n\nRandom: Uses sample and hold that picks new random values at an interval set by the rate control.\n\n All Walrus Audio Products are covered by our limited lifetime warranty. Read more here. ","images":["https://cdn.shopify.com/s/files/1/0906/8480/files/Front_1d0235c3-878b-47a0-aa5e-700c4faa3942.jpg?v=1748879408","https://cdn.shopify.com/s/files/1/0906/8480/files/Left_d1ce1592-5286-47de-b921-14ef2d75e404.jpg?v=1748879408","https://cdn.shopify.com/s/files/1/0906/8480/files/Right_16afe9bb-991f-4590-9fa2-d18f1eaf2e22.jpg?v=1748879408"],"price":99.99,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:57:20.836Z"},"share_url":"https://firestarter.network/l/lst_Bk0DpXdo","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_Bk0DpXdo' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Fundamental Series Tremolo' and a budget_max comfortably above $99.99 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."]}}