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Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version

Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version

Q: Why mine which is brand new stopped working and makes a loud hissing/banging noise?

Charge it. It’s just outta power

Q: Does this B4-X works while charging? without any limiter like "for safety reason"

Hello. Sorry B4-X still has the limitation.

Product ID: 745269328

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Details

Brand
Little Bear
Power Source
Battery
Special Feature
Portable
Item Weight
245 Grams
Lithium battery Weight
32.6 g

⚡0.45W high-fidelity power output

🎧Dual-mono vacuum tube output

🔋12V rechargeable lithium battery

Description

🎧 Elevate your sound game with vintage warmth in a sleek, portable package

SLEEK MINIMAL - Ultra-thin 0.1cm profile fits effortlessly into any setup or bag
TUBE DRIVEN WARMTH - Authentic vacuum tube sound elevates your headphone experience
PORTABLE POWERHOUSE - Compact 245g design for on-the-go audiophiles
BALANCED AUDIO BLISS - Dual-mono configuration delivers pristine, immersive soundstage
LONG LASTING RECHARGEABLE - 12V lithium battery keeps your music flowing without interruption

The Little Bear B4-X is a portable, battery-powered dual-mono vacuum tube headphone amplifier featuring a 12V rechargeable lithium battery, delivering 0.45W of high-fidelity output in an ultra-compact 245g, 0.1cm thin chassis—perfect for discerning listeners seeking warm, balanced audio anywhere.

Specifications

Brand	Little Bear
Power Source	Battery Powered
Special Feature	Portable
Item Weight	245 Grams
Lithium battery Weight	32.6 g
Rechargeable Battery Included	Yes
Lithium Battery Voltage	12 Volts
Output Wattage	0.45 Watts
Model number	7545884688
Item Weight	245 g
Product Dimensions	11.43 x 6.86 x 0.1 cm; 245 g
Item model number	7545884688
Item Height	0.1 Centimeters
Item Width	2.7 Inches
Are batteries included?	No

Have a Question? See What Others Asked

Why mine which is brand new stopped working and makes a loud hissing/banging noise?

Does this B4-X works while charging? without any limiter like "for safety reason"

best place to buy op amps

Mine stopped holding a charge, can the batteries be replaced?

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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1 month ago

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