2025 TV Buyer’s Shortlist: The 10 Models That Stand Out This Year
Discover the top 10 must-see TVs of 2025, showcasing exceptional features and stunning designs that elevate your viewing...
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Little Bear B4-X Portable Dual- Mono Vacuum Tube Headphone Amplifier$119.99
The difference between B4 and B4-X: 1 B4-X is a dual-mono balanced version. Its left and right channel are amplified by independent components, and power supply, tubes, and op amp are all independent and symmetric. So the degree of sound separation is higher than B4.
2 B4-X adopts ...The difference between B4 and B4-X: 1 B4-X is a dual-mono balanced version. Its left and right channel are amplified by independent components, and power supply, tubes, and op amp are all independent and symmetric. So the degree of sound separation is higher than B4.
2 B4-X adopts 2 groups of independent power supply(+12V and -12V) for 2 op amps, less mutual effects and can drive 300Ω headphones. 3 The circuit adopts dual op amp parallel output, with higher output power. 4 B4-X has 3.5mm and 2.5mm 2 kinds of output interface, suitable for most of balanced and standard headphones.
Mini size and unique design: built-in tube makes you have a tube amplifier which can be held by one hand, convenient to carry and can enjoy HiFi music everywhere. Full, delicate and soft sound: warmer than transistors, independent op amp and power supply inhance the SNR and degree of separation, less interplay and higher sound quality. With built-in battery protection circuit
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