{"type":"firestarter.listing","listing":{"id":"lst_4nmuKR6P","product_name":"iBasso PB5 OSPREY Dual Nutube 6P1 Vacuum Balanced Tubes Portable Amplifier","category":null,"description":" \n\nFeatures:-\n>High-End Portable Tube Headphone Amplifier.\n>Dual NuTube 6P1 Vacuum Tubes.\n>Robust Power Supply System With Six Batteries.\n>Highly-Precise 24-Level 4-Section Stepped Volume Adjustment.\n>Tremendously Powerful.\n>Up to 1700mW Per Channel Output at 32Ω Impedance.\n>Two Step Suspension & Cathode Input.\n>Exquisite Components For Exclusive Sound.\nTechnical Specifications:-\n>Output Voltage: 9Vrms(4.4mm), 4.5Vrms(3.5mm).\n>Output Power: 1700mW+1700mW(32Ω).\n>Line-in Voltage: <2.5V.\n>Output Impedance: 0.25Ω(4.4mm), 0Ω(3.5mm).\n>Frequency Response: 20Hz-40kHz.\n>Recommended Headphone Impedance: 8-600Ω.\n>Inputs: 4.4mm.\n>Output: 4.4mm+3.5mm.\n>Gain: +11.5dB(High), +2dB(Low-Gain).\n>Charging Time: 2.5 hours.\n>Battery Life: Up to 10.5 hours.\nExperience the magic with the all-new iBasso PB5 Osprey, a high-end balanced tube portable amplifier for headphones. This stunning amplifier brings a purely analog sound with its dual NuTube 6P1 Vacuum tube design. It offers unprecedented performance with a rich tone and an analog character throughout the frequency band. The amplifier has a 24-position 4-section stepped attenuator volume adjustment that allows you precise adjustment with both channels. iBasso PB5 has a six-battery design with a powerful amp section producing up to 1700mW per channel output at 32Ω of impedance load. iBasso brings you pinnacle of the performance with the outstanding PB5 Tube Headphone Amplifier.\nExperience The Pure Analog Magic:-\niBasso PB5 brings a purely analog sound with its dual hybrid tube design. It brings a charming sound with a rich tone and clear dynamics. The high-end NuTubes add a rich flavor to the sound bringing lovely vocals and a magical tone.\nDual NuTube 6P1 Tubes:-\nDeveloped by KORG and Noritake, the 6th gen NuTube on the iBasso PB5 operates exactly as a conventional triode vacuum tube and creates the same rich and dynamic overtones that are appreciated in a desktop tube amp","images":["https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-pb5-black-392004.jpg?v=1706294525","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-955630.jpg?v=1706294608","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-587635.jpg?v=1706294510","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-959262.jpg?v=1706294710","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-606273.jpg?v=1706294553","https://cdn.shopify.com/s/files/1/0031/0453/8673/files/ibasso-pb5-osprey-dual-nutube-6p1-vacuum-balanced-tubes-portable-amplifier-hifigo-567726.jpg?v=1706294597"],"price":1499,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:30.091Z"},"share_url":"https://firestarter.network/l/lst_4nmuKR6P","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 ","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_4nmuKR6P' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy iBasso PB5 OSPREY Dual Nutube 6P1 Vacuum Balanced Tubes Portable Amplifier' and a budget_max comfortably above $1499.00 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."]}}