Tube preamp & Audio Switcher & Headphone Amp: 4 groups of RCA inputs, 2 groups of RCA and 3.5mm headphone jack outputs, both as audio selector and splitter, no need to plug in and out cables repeatedly; compatible with many audio devices such as computers, phones, and CD players etc., greatly improve the sound quality for your sound system. Mysterious built-in tube design: pluggable Soviet Union 6H3N tubes filter all digital feelings, the sound is warm and mellow, clear and delicate, all details will be shown vividly to provide a live listening experience; classical NE5532 op-amp, can drive most headphones easily. Independent tone knob and input selector: with separate control of treble and bass, the specific proportion components in high and low frequency can be adjusted to present music.
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