{ "schema_version": 1, "projection": "envoy-agent-v1", "identity": { "title": "MXR M103 Blue Box Reissue 2007 - Present - Blue", "brand": "MXR", "model": null, "mpn": null, "gtins": null, "handle": "gm-mxr-m103-blue-box-reissue-mxr-m103-blue-box-reissue-2007-present-blue-cc01561d", "url": "https://envoy-music.myshopify.com/products/gm-mxr-m103-blue-box-reissue-mxr-m103-blue-box-reissue-2007-present-blue-cc01561d", "catalog_product_id": "product_ff080141cc01561d", "lane": "pedals", "product_object": "effects pedal" }, "offer": { "price": 95.9, "currency": "CAD", "available": true, "condition": "Excellent", "price_band": "entry", "source_verified_at": null }, "specifications": {"type":"json","groups":[{"name":"Effect and controls","fields":[{"label":"Model","value":"M103 Blue Box Fuzz","source":"https:\/\/www.jimdunlop.com\/mxr-blue-box-fuzz\/"},{"label":"Effect type","value":"Octave fuzz that duplicates the guitar signal two octaves down and combines it with fuzz","source":"https:\/\/www.jimdunlop.com\/mxr-blue-box-fuzz\/"},{"label":"Blend control","value":"Blend knob controls how much fuzz tone is mixed with the two-octaves-down signal","source":"https:\/\/www.jimdunlop.com\/mxr-blue-box-fuzz\/"},{"label":"Power options","value":"9-volt battery, Dunlop ECB003 9-volt adapter, DC Brick, Iso-Brick, or Mini Iso-Brick power supplies; power supplies not included","source":"https:\/\/www.jimdunlop.com\/mxr-blue-box-fuzz\/"}]}]}, "connectivity": null, "power": null, "included_items": null, "required_accessories": null, "optional_accessories": null, "compatibility": null, "advisor": { "best_for": null, "who_should_skip": null, "fit_notes": null, "watchouts": null, "verification_questions": null }, "retrieval": { "summary": null, "agent_summary": null, "intent_terms": null, "use_cases": ["practice","live-performance"], "skill_level": "beginner" }, "trust": { "has_verified_retail_listing": false, "source_count": 0, "source_tier_mix": null, "evidence_flags": null, "spec_provenance": {"specifications":{"source_url":"https:\/\/www.jimdunlop.com\/mxr-blue-box-fuzz\/","method":"gear_universe_read_model","fetched":"2026-07-30"}} }, "related": { "similar_item_ids": null, "comparison_reasons": null } }