Features: new and high quality Using professional VU driver, contains root dynamic compression circuit, logarithmic output characteristics, the pointers does not move to avoid the small signal, large signal when the pointers bottoming phenomenon. Has a mute function, in an instants boot, mute function feet will get a low level, so to avoid the energizing moment, the pointers about bottoming phenomenon. To complys with the power of habits, the pointers will be a small swing to swing. The circuit of the power supply AC12V, rather than TA7318 the minimum DC20V power above, it will be very easy to use. The use of double-sided circuit boards, in order to ensure pressure line terminal firmly, not many times after wiring terminal pads may have loose. The driving board is designed with beautiful and reasonable layout, without any interference and self-excitation phenomenon. Specifications: Material:PCB Size:Approx. 55x66mm/2.16x2.59inch Voltage: AC12V Distance of locating hole: 50x56mm Diameter of locating hole: 3mm Package Includes: 1x Driver Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.