J'ai changé le câble RCA vers mini jack entre le DAC et l'ampli par un câble de 0,5 m au lieu de 2 m et cela a très nettement diminué le bruit de fond.
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Class D Amplifier TPA3116 1x50W 8Ω Noir

The Audiophonics TPA-M50 is a compact amplifier with a low price but very good sound performance. The TPA-M50 is based on an amplification chip TI TPA3116D2 capable of delivering 50W of power under 8Ω, while benefiting from a Class D architecture ensuring a high efficiency of 90%. This energy reserve will allow the amplifier to accompany many speaker models or a subwoofer. Its high quality design allows it to provide low distortion, low noise and good dynamics for accurate and lively reproduction.
In addition, the amplifier also acts as a summing device, thanks to the use of a NE5532P AOP and capacitor tracking. This allows the TPA-M50 to receive a stereo signal to mix the two channels and finally output in mono, without losing the left or right channel. This function is particularly useful if the TPA-M50 is used alone and with a single speaker.
| Specifications | |
|---|---|
| Product type | Amplifier |
| Amplification chip | TPA3116D2 |
| Amplification type | Class D |
| Power (Sous 24V) | 1x50W @ 8 Ohm (THD+N 0,1%) |
| Frequency response | 10Hz - 20kHz |
| Input | 1x Jack 3.5mm |
| Output | 1x Speaker terminals |
| Housing material | Aluminium |
| Power supply | 12-26V DC via Jack DC 5.5/2.5mm (power supply sold separately) |
| Dimensions (LxPxH) | 68.5 x 115 x 37mm |
| Color | Black |
| Input | Jack 3.5mm |
| Output | Speaker terminal |
| Color | Black |
| Channel | 1 (Mono) |
| Class | Class D / T |
| Amplifier chip | TPA3116D2 |
| Power (W) | 50.0 |
| Remote Control | No |
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