








🎶 Elevate your sound game with tube-powered precision and portable luxury!
The Little Bear B4-X is a portable dual-mono vacuum tube headphone amplifier featuring independent left and right channel amplification with separate power supplies and op amps. It delivers 450mW output power, supports headphones from 16 to 300Ω, and offers both 3.5mm and 2.5mm balanced outputs. Compact and crafted with premium components, it provides warm, high-fidelity sound with up to 4.5 hours of battery life, perfect for audiophiles on the go.
| Material | Gold-plated |
| Lithium Battery Weight | 32.6 Grams |
| Item Dimensions L x W | 4.5"L x 2.7"W |
| Color | Upgrade Version Black |
| Includes Rechargeable Battery | Yes |
| Lithium Battery Voltage | 12 Volts |
| Battery Cell Composition | Lithium |
| Battery Description | Lithium |
| Power Source | Battery Powered |
| Special Features | Portable |
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