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Description The preamplifier version uses NE5532 op amp as the core, with high-quality capacitor high-precision five-color ring metal film resistance production, magnification at 5 times, for some low-sensitivity audio source.They have common preamplifier with the following features: 1 DC single power supply, the power range of 12-35V wide, and it is easy to use 2 Double panel 3 It is easy to replace their own better op amp IC with gold-plated carrier 4 board size 40X50MM up to 16MM small size and it is easy to put in any small size of the machine.
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