{"type":"firestarter.listing","listing":{"id":"lst_n1u8MBC-","product_name":"Monumental Harmonic Stereo Tremolo","category":"Pedal","description":"*Whoa this is popular!  New orders shipping late July*\n \n \nBuilding off the rich, warm, pulsating modulation of the Monument, the Monumental Harmonic Stereo Tremolo is an analog, optical tremolo bringing new controls, features, and width to the Walrus Audio line. New features available in the Monumental include the ability to save presets, blend between standard and harmonic tremolo modes, access to new wave shape and tap division options, and most importantly, a pan control to set the stereo spread of the tremolo to the right and left channels.\nNew Features• True Stereo Input/Output• The ability to save and recall three on-board presets, as well as a “live” mode• Full expression control over every parameter• An additional wave shape and tap division• Pan control to allow the tremolo to sweep from left to right• S-B-H to allow the user to blend from standard to harmonic tremolo modes• The ability to ramp up OR down (ramp location controlled via rate control) to achieve “Leslie” style ramp from your current rate\nInspired by the beautifully jagged, red-sand desert landscape of Monument Valley, the Monumental Tremolo is capable of blending between harmonic and standard tremolo to produce rich, luscious, warm pulsating modulation capable of peaks and valleys as smooth or as jagged as the real ones that our dear mother nature created long ago.\nWith different combinations of stereo panning, rate, division, and wave shapes, everything from traditional tremolo to inspiring unique waveforms will help you carve new paths that you won’t hear anywhere else.\nHarken back to vintage tones inspired by Fender Brownface amps in Harmonic mode. A low-pass and highpass version of your guitar signal is modulated opposite of each other, or 180º out of phase (high and low frequencies rise and fall opposite of each other). The result is a warm, almost “chewy” tremolo. Turn the S-B-H counterclockwise to give more bite to your tremolo pulse and tame the out-of-phase harmonics.\nControlsPAN: Co","images":["https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Front_d02f471d-53ec-49cb-b5b6-cb154988e819.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-left.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-right.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-back.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-out-jacks.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-in-jacks_80a4350a-16d5-4ba4-9530-c7ad69c30121.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_front.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_left.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_right.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_back.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_in-jacks.jpg?v=1748879129","https://cdn.shopify.com/s/files/1/0906/8480/files/Monumental-Black_out-jacks.jpg?v=1748879129"],"price":279.99,"currency":"USD","in_stock":true,"inventory_qty":19998,"dynamic_pricing":false,"listed_at":"2026-06-20T14:57:20.790Z"},"share_url":"https://firestarter.network/l/lst_n1u8MBC-","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_n1u8MBC-' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Monumental Harmonic Stereo Tremolo' and a budget_max comfortably above $279.99 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."]}}