iBasso PB6 Macaw – Portable Balanced Tube Headphone Amplifier with Desktop Power The iBasso PB6 Macaw is a flagship portable balanced headphone amplifier that combines vintage tube character with modern audiophile performance. Featuring four military-grade Raytheon JAN6418 vacuum tubes in a fully balanced 4-channel architecture, the PB6 delivers lush, organic sound in Tube mode, while also offering a Class AB solid-state mode for clean, accurate audio. With a fully powered anode supply of 22.5V, all tubes are carefully matched by engineers to ensure precise channel balance and outstanding sonic performance. The amplifier is equipped with an 8.4V high-voltage battery pack for purer power, low ripple, and extended dynamic range, outperforming conventional battery-based designs. For even more output, the PB6 supports 12V DC external power, unlocking up to 2300mW 2300mW @ 32Ω, capable of driving demanding full-size headphones with ease. The PB6 features dual output modes – select Tube mode for warmth, delicacy, and natural tonal body, or switch to Class AB mode for fast transients, clear resolution, and wide dynamics. With selectable high/low bandwidth modes, the sound signature can be tailored to your preferences: high bandwidth for speed and clarity, low bandwidth for smooth, laid-back listening. Precision control is at the heart of the PB6. The NJW1195A 4-channel volume control chip allows fine adjustments in 0.5dB steps, minimizing channel imbalance and background noise. Internally, PORON damping suspends the tubes to reduce microphonic effects, and shielding protects from electromagnetic interference. Connectivity includes 3.5mm single-ended and 4.4mm balanced inputs and outputs, allowing full compatibility with a wide range of sources. You can use a 3.5mm source and still benefit from 4.4mm balanced amplification. With its unique design, desktop-grade power, tube richness, and compact footprint, the iBasso PB6 Macaw is the ideal choice for audiophiles who demand both sonic excellence and portability.
