Description:Power input to increase the rectifier bridge, AC and DC can be used, the input DC is not divided into positive and negative, the use of more convenient.Performance is more stableUsing NE5532 op amp chip, the use of round hole 8 pin IC socket, easy to upgrade the op amp chip.Board size: Approx. 50mm * 33mm / 1.97x1.3inchOperating voltage: DC 9V-24V; AC: 8V-16VSpecification:Material: PCBColor: MultiPackage Includes:1 Piece of Pre-Amplifier Board + Signal Shielding Wire
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