{"product_id":"ibasso-pb5-osprey-portable-headphone-amplifier-1","title":"iBasso PB5 Osprey Portable Headphone Amplifier","description":"iBasso PB5 Osprey Portable Headphone Amplifier – Specifications: Output Wattage: 1700mW + 1700mW @ 32Ω; Amperage: Up to 2A output current. The iBasso PB5 Osprey is a fully balanced portable headphone amplifier powered by dual Korg Nutube 6P1 vacuum tubes. Designed with an advanced power supply using six independent batteries—two powering the tubes and four driving the secondary amplifier—it delivers pure tube warmth free from signal interference. A custom 24-position stepped attenuator ensures precise analog volume control, while a two-step mechanical suspension minimizes microphonic vibration. Built with Texas Instruments OPA827 op-amps, custom film capacitors, and 4.4mm balanced plus 3.5mm single-ended outputs, it delivers genuine desktop-grade analog musicality on the go.\n\nReviews highlight the Osprey's smooth, weighty, and engaging sound, praising the natural tube warmth and expansive soundstage it brings to mobile setups. Critics commend its exceptional driving power, effortlessly driving demanding planar magnetic and high-impedance dynamic headphones while keeping lower-impedance gear well controlled. Users also celebrate its silent background across most pairings, robust battery setup, and refined volume control, noting that it adds an organic, captivating presence to both IEMs and full-sized cans.\n\nAudio enthusiasts seeking rich vacuum tube character and desktop-caliber power without being tied to a fixed listening station will find this amplifier an unbeatable choice. By blending portable convenience with dual-Nutube amplification and clean multi-battery delivery, it elevates your favorite headphones into an immersive, high-end listening experience wherever you go.","brand":"IBasso","offers":[{"title":"Default Title","offer_id":67630145077529,"sku":"100555","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/100555-5.jpg?v=1790981862","url":"https:\/\/tmraudio.com\/products\/ibasso-pb5-osprey-portable-headphone-amplifier-1","provider":"The Music Room","version":"1.0","type":"link"}