5pcs 2SD1047 D1047 2SB817 B817 audio amplifier the tube original authentic
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All-i n-One DAC Amp: A DAC, amplifier, preamplifier, and headphone amplifier are all integrated into the Fosi Audio MC331. Compact Yet Powerful: The MC331 only takes up minimal desktop space but boasts a maximum power output of 105W x2@4Ω, effectively driving your bookshelf speakers.
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Multiple inputs and outputs: support Bluetooth / Coaxial / Optical / USB(PC-USB/U-disk) / 2 groups of Stereo RCA inputs, compatible with phone, computer, TV, CD player, MP3, etc., can greatly improve the sound quality for them. U-disk input supports lossless formats such as APE, FLAC, WAV etc., Besides the speaker output, the 6.5mm headphone jack can easily drive 16-300Ω headphones, easy to enjoy HiFi music. High power output: Rated 35W+35W output, easily drives most home passive speakers, and reproduces the details of the sound well. Specially designed with a low-frequency output to connect an active subwoofer to build a 2.1-channel audio system, providing high-quality music for audiophiles.
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It sounds quite warm and full with excellent low frequency extension & energy. This is designed for easy to drive/sensitive speakers, it only outputs a few Watts (my guess would be around 5W maximum).
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With 5 kinds of analog and digital audio input (Bluetooth 5.0 / USB / Coaxial / Optical / 2 groups of RCA), compatible with almost all audio devices such as MP3, phone, tablet, computer, CD players etc. to meet different needs of home audio systems. U-disk input supports lossless formats such as APE, FLAC, WAV etc., easy to enjoy HiFi music. Besides speaker output (4/6/8Ω), a low frequency output is specially designed to connect active subwoofer to build 2.1 channel audio systems, which can strengthen bass sound effects to bring more shocking experience just like in the cinema. With treble and bass control to bring more delicate sound according to your own listening style. Integrated design of vacuum tubes and transistors, using 6U1/6A2/WY-3P tube for pre-amplificatoin, WY2P tube for recti.
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Don’t let its size fool you. Whether you’re streaming wirelessly or plugging in directly, the HTA20 has you covered. Listen your way. The HTA20 is the ultimate choice for audiophiles who want to impress, indulge, and enjoy.
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Unique and amazing combination: integrated ST-01/ST-01 PRO amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, dynamically decorates the audio system space. HiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise. Also with treble and bass knobs to adjust one's own preferable sound styles, presents HiFi music with rousing highs and deep lows.
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As an integrated amplifier, this device is designed to work seamlessly with your existing audio setup, providing a powerful and nuanced sound that is sure to impress even the most discerning audiophiles.
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1x GE made in USA 5670 2C51 Black plate Square Getter tube. I don't know it's power output but I would guess around 10-20W, I found it a great pairing with the HiFiMan Susvara. I will make a note of the serial number for security purposes.
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