Features: - Bluetooth tube preamplifier - Support AUX wired and wireless Bluetooth input. Support operations via buttons and remote control - Stable Bluetooth 5.0 reception: 44khz/16bit CD-level standard - Support U disk and SD card to play music: Supports audio files in lossless formats including WAV, FLAC, APE, etc. Supports U disk/SD card with a maximum memory of 128GB - Treble, Mid, and Bass knobs to adjust freely as you like - Two audiophile tubes: Soft and warm tube tones that are transparent, powerful and more endearing.Tubes can be replaced by other tubes, such as 6K4, 6J1, 5654, etc. With 3.5mm headphone jack, it can be used as a headphone amp. Dual RCA output ports and 3.5mm headphone jack for simultaneous output - Chip management and high-end power supply: CCC/UL/FCC certification ensure quality.
Anti-shock surge and 90-264V wide design; stable output and abundant kinetic energy. Multiple protections including over-current protection, power protection, over-temperature protection, magnetic field protection, electrostatic protection, low-voltage protection, short-circuit protection and over-voltage protection Specifications: - Working voltage: DC12V - Frequency Response Range: 20Hz-20kHz (±3db) - Audio input: Bluetooth 5.0/RCA/U disk/SD card - Audio output: RCA/3.5mm headphone jack - Signal-to-noise ratio: =110db - Distortion: 0.05%a - U disk/SD card supported formats: MP3/WMA/APE/FLAC/WAV, etc. Headphone impedance: 16-64O - Headphone maximum output power: 100mW (32O load) - Output sensitivity: 0.775V - RCA output level: 1.4Vrms - Gain (for Treble, Mid, and Bass): ±6db - Product size: 11712635mm - Product net weight: 0.42kg Package Included: - 1 x Main Unit - 1 x Power Adapter - 1 x Remote Control Note: - Other items pictured are not included, for demonstration purposes only. Thank you for your understanding! Usually it costs about 30USD-50USD.If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "supmotor" and is located in this country: CN. This item can be shipped worldwide.