Exquisite FR4 double-sided glass fiber board, high-quality PCB board (77×37mm), board thickness 2mm, and arc wiring is grounded at one point. Imported high-quality RC components are assembled. Japan KOA 1/4W high-precision five-color ring metal film resistor, Nissan's famous electrolytic, gold-plated IC socket (convenient to upgrade), 2 US-made NE5532 dual op amps, connect to ±5V~±15V stable voltage to work.
Working mode: This circuit board is used for the balanced XLR signal output of the CD player and converted to the single-ended RCA output to the next stage (pre-stage or power amplifier) through this circuit.
Input balanced signal and output unbalanced signal. It is suitable for sound system with balanced output of sound source and unbalanced input only for subsequent equipment.
Especially for those who use professional equipment as their homes, the professional audio source is XLR balanced output. This board can convert your signal source to the single-ended RCA signal required by a general power amplifier.
This circuit board can be replaced with a better operational amplifier, such as AD826, AD827, OPA2134, OPA2604, OPA2111 and other high-end operational amplifiers, the effect will be better.
Note:
When using, pay special attention to the power supply voltage not exceeding ±18V, and the three wires of the balanced XLR signal cannot be connected incorrectly. The NE5532 integrated block on the circuit board is a genuine second-hand disassembled machine. Because the components on the board are different due to different assembly batches, the brands, models, and specifications of some capacitors will be slightly different. The components and parameters on the received board shall prevail!