Usage Tips:Description Are you looking for a professional, yet reasonable tube preamp? Are you in search of a sturdy, trustworthy accessory that can do multiple jobs at once? If yes, look no further! Our Vacuum Pre-amp must meet your needs, this tube preampis one of the great choices for you. Features -Color:As Shown -Material:PCB, ABS, glass -Size:11.00X7.50X3.20cm/4.32X2.95X1.26in -Size:5.00X1.50X1.50cm/1.97X0.59X0.59in Input: DC 12-16V 1A -This tube preamp utilizes tubes to produce a pure and clean sound that is free from distortion and interference. -With its preamplifier function, this device can enhance the audio effect of any sound system it is connected to. -This Vacuum Pre-amp is fit for diy home theater systems, allowing users to adjust their audio setup to their liking. -The exquisite design of this Stereo Preamp makes it a stylish addition to any modern home decor. -Lightweight, portable, easy to install and use, which can give you a great usage experience. Package list: 1 x preamp 2 x tubes