Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone

Performance parameters: Frequency response range: 0-100K-0.1dB Gold-plated input / output socket NE5532 OP chip (you can upgrade it to a other better brand OP chip. Like BB or Muse) Original nichicon electrolytic capacitor TOP HiFi Original DALE resistors. Precision rings resistance. Battery: Lithium batteries, voltage: 12V, 1000mA Charging time: 2-2.5 hours to charging full the battery Working time: 4-4.5 hours Output power: 450mW SNR: 99dB Suggest load impedance: 16-400Ω Size: 115 * 69 * 23 mm1 (Length XWidth X Depth) (The measurement does not include the knob

Sale Price:$69.99

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