Little Bear B4-X: Portable tube amplifier

The Little Bear B4-X is a portable tube amplifier designed with dual mono design.

Features of Little Bear B4-X:

• Mini size and unique design: Built-in tube allows you to use a tube amplifier that can be held with one hand, convenient to carry and enjoy HiFi music everywhere.
• Built-in battery protection circuit: The battery allows you to listen to music without time limits. It cannot be turned on while charging and will automatically turn off once fully charged and the charger LED indicator will turn green.
• Full, Delicate and Soft Sound: Warmer than transistors, independent op-amp and power supply increase SNR and separation, reduce interference and improve sound quality.
• High quality materials and craft: using gold-plated socket, original nichicon electrolytic capacitor, original DALE resistors and precision ring resistance.

Characteristics of Little Bear B4-X:

• Tube: USA RAYTHEON JAN5784×2
• OU: NE5532*2 (can be upgraded)
• Lithium battery: 12V, 1000mA
• Charging time: 2-2.5 hours
• Working time: 4-4.5 hours
• Output power: 450 mW
• SNR: 105 dB
• Load resistance: 16-300Ω
• Output: 2.5 balanced jack x 1, 3.5 mm jack x 1
• Size: 115 x 69 x 23 mm (not including handle)

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