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| Price /Unit | $71.10 | $69.65 | $67.47 | $64.57 | Contact US |
BDM8 TPA3255 2x300W Bluetooth5.3 Power Amplifier Board Stereo High Power Audio Amplifier Board Support PC DSP Tuning
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Finished Board TDA7293 Stereo Power Amplifier Board 100Wx2 OP07 DC Servo 5534 Independent Operational Amplifier
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Unassembled TDA7293 Stereo Power Amplifier Board DIY Kit 100Wx2 OP07 DC Servo 5534 Independent Operational Amplifier
$39.04
Hi-End Audio Power Amplifier Board OPA445BM Operational Amplifier 120W Output Replacement for MBL8006
Advantages:
- The circuit is equipped with a high-frequency compensation capacitor (excluding the 471P input to ground, which only limits the entry of ultra-high frequency interference harmonics into the circuit), so the sound quality is very clear and delicate.
- Using OPA445BM operational amplifier as the voltage amplification stage, the sound quality is neutral. OPA445BM can provide a neutral and balanced sound base under high voltage power supply, with outstanding high-frequency resolution and no harshness. The mid and low frequency performance has a sense of solidity, and the overall sound quality is natural and accurate. As a high-voltage FET input operational amplifier, OPA445BM can adapt to a ±40V power supply scheme, suitable for driving power transistors or complex loads, and has better stability than some discrete component schemes.
- Using suspended dynamic power supply, the dynamics are more intense and the sound field is more outstanding.
Specification:
- PCB size: 195 x 71mm for each board
- Power supply voltage: AC18x2 - AC38x2
- Output power: 120W at 8ohms
- Load range: 4 - 8ohms
- Frequency response: 10Hz - 30kHz
Package Included:
- 1 x Pair of Amplifier Board
Note:
- The heat dissipation sheet is not included.
- It is tested and ready to use.
- Because the gold seal OPA445BM has been discontinued, the OPA445BM on the board is a secondhand disassembled part, while the rest components are new parts.
- Support startup delay and output protection. The original machine used a relatively inexpensive transistor as a constant current source, but this board has improved this area by replacing it with an expensive constant current diode to improve stability. It has also removed multiple complex components.
