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Very reliable for its price. The sound is clear and I was impressed with the channel separation. Of course, no comparison should be made with expensive amplifiers.
This review has been posted for LJM GC LM3886TF Stereo Amplifier Class AB 2x68W 
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LJM GC LM3886TF Stereo Amplifier Class AB 2x68W
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Reference : 9965
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This LJM small amplifier Class AB will surprise you by its accuracy its dynamics and its excellent resistance of the low frequencies.
It has a rectifier filter capacitor including a speaker protection circuit.
Finally, it incorporates a start delay circuit and protection against overload and overheating.
Easy to implement and small format, it will prove an excellent choice for any DIY amplifier project.
Characteristics :
- Amplifier LM3886TF Gainclone
- Output power: 2x 68W under 8 Ohms
- THD + N: 0.03% (20Hz - 20kHz)
- Input Sensitivity: 1.57V
- Power supply: 2x 24V AC (24-0-24) ex: 5649
- Audio input and output via screw terminals
- Dimensions: 132x40mm
- Hole spacing: 126x35mm
- Requires heat sink / radiator
| Input | Screw terminals |
| Output | Screw terminals |
| Channel | 2 (Stereo) |
| Class | Class A / AB |
| Amplifier chip | LM3886 |
| Power (W) | 68.0 |
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Average votes 3.5 / 5 4 reviews | Why write products reviews ? You can share your feelings about products and help other people by sharing your experience |
Note :
5/5
Date :
2023-01-13
Nikolaos R.
Note :
3/5
Date :
2020-10-02
Pavel Z.
Requires modifications
Power decoupling in this amplifier is poor: it is only bulk capacitors and two 0,1 uF film capacitors. The film capacitors are far from chip terminals so they don't really decouple anything and at the same time are close to the bulk capacitors that are low-ESR, this results in a strong antiresonance effect. You'll need at least to remove the film capacitors and then add something like SMD ceramics at chip terminals on the board back side and also add small electrolytic capacitors. See neurochrome SPICE model for an example - although I cannot recommend using solid polymer capacitors, they sounded weird here.
Also consider shorting the capacitors in feedback loop.
This review has been posted for LJM GC LM3886TF Stereo Amplifier Class AB 2x68W Power decoupling in this amplifier is poor: it is only bulk capacitors and two 0,1 uF film capacitors. The film capacitors are far from chip terminals so they don't really decouple anything and at the same time are close to the bulk capacitors that are low-ESR, this results in a strong antiresonance effect. You'll need at least to remove the film capacitors and then add something like SMD ceramics at chip terminals on the board back side and also add small electrolytic capacitors. See neurochrome SPICE model for an example - although I cannot recommend using solid polymer capacitors, they sounded weird here.
Also consider shorting the capacitors in feedback loop.
Note :
1/5
Date :
2019-09-27
Sébastien S.
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