BRZHIFI M2 Mini Digital Power Amplifier Bluetooth 5.0 Amp Hifi Amp 2x80W + 15V 4A Power Supply

BRZHIFI M2 Mini Digital Power Amplifier Bluetooth 5.0 Amp Hifi Amp 2x80W + 15V 4A Power Supply

Description:
Based on MA12070 solution, BRZHIFI M2 is a high-end digital power amplifier. Based on a fully integrated multi-level high-frequency switch technology scheme, it boasts extremely low consumption and heat generation, and ultra-high conversion efficiency. Fourth-order feedback error control provides better gain, extremely low signal distortion, and excellent audio performance. Even if the power supply is not ideal (noise or ripple), it still guarantees low distortion, high sound quality and stability.

This amplifier uses a multi-stage half-bridge power stage, which is different from the traditional class D amplifier. Each half-bridge power stage of this product has 4 transistors/MOSFETs (traditional class D amplifier only has 2). These half bridges establish multiple PWM output stages through a single power supply (each MOSFET is driven by a separate PWM signal), which brings great flexibility and can configure the amplifier for the best power performance in any application. Capacitor for Cfly located between the top and bottom MOSFETs is continuously powered by an independent circuit, so the voltage potential can be maintained at a fixed level. This capacitor for Cfly basically acts as an additional power rail. In this way, each half-bridge power stage can establish a three-level output signal at the output switching node: 0V, 1/2 PVDD, and PVDD.

The amplifier for MERUS uses a unique power stage topology. Based on this design, each half-bridge can use four MOSFETs (M1-M4) and the capacitor for Cfly located between these MOSFETs as an additional power rail to establish a three-level output signal at the output switching node. In a complete bridge load (BTL) configuration—that is, combining two three-level half-bridges with switching modes, where the switching mode of each half-bridge is phase-shifted by 90° relative to the other—the resulting power level It can provide 5-level modulation mode for differentially connected speaker loads. Multi-level modulation can produce a higher output frequency, and each voltage step is smaller. Compared with the traditional Class D amplifier, the output audio signal is closer to the input waveform.

Distortion control: MA12070 has an intelligent protocol embedded in a digital management solution. The power management algorithm greatly adjusts the switching frequency and modulation to optimize the power loss and EMI within the output power range. Its 4th-order feedback loop ensures low distortion and high PSRR. MA12070 has protection against DC, short circuit, over-temperature and under-voltage conditions Features. The idle power consumption at 26V PVDD is less than 100mW, the efficiency at 1W is greater than 79% (1kHz sine, 8Ω), the efficiency at full power is greater than 92% (1kHzsine, 8Ω), and the DNR is greater than 107dB (Aw, rel.to 1% THD+) N power level), 55μV output integrated noise (Aw), high output level THD+N is 0.003%. The selectable gain is (20dB/26dB), 2x80W peak output power (18V PVDD, RL=4Ω, 10% THD+N level), 2x45W continuous output power (RL=8Ω at26V, PMP4, 10%THD+N level, without heat sink).

Multi-level switching technology: Although the efficiency of the traditional Class D audio amplifier has reached 90% and above, its relatively high power, as well as its demand for LC filters and heat sinks, make it occupy a larger space. The multi-stage Class D amplifier for MERUS breaks these limitations. In addition to inherently improving switching efficiency, due to the reduced ripple current of external components, its total power consumption and power loss are also significantly reduced. Its technological innovation has brought the following advantages:

>No need to output LC filter, smaller size
>Improved common volume efficiency
>Significantly reduce power consumption and reduce heat dissipation
>Thanks to the high-frequency multi-level switch, the details of the sound source are preserved and the sound quality is improved

IC protection: undervoltage lockout, overheat warning/error, short circuit/overload protection, power stage pin to pin short circuit, error report via serial interface (I2C), and DC protection. Low power loss means less heat generation and lower operating temperature. In many cases, the amplifier circuit board itself can provide sufficient heat dissipation, even for high-power applications that usually require the use of dedicated heat sinks. Due to the low operating temperature inside the audio device, it has a larger margin during high output power operation, such as when playing music at high volume. The lower operating temperature reduces thermally accelerated aging, therefore, it also improves the reliability of audio equipment.

Features:
- MA12070. 80W+80W output, THD+N as low as 0.003%, SNR reaches 110dB. Multi-level high-frequency core technology, multi-level high-frequency core technology, long-time work without getting hot, not afraid of power ripple interference
- Compact size. High-end Bluetooth chip QCC3003. Pure copper gold-plated terminals, low voltage safe DC power supply
- Wireless Bluetooth connection, high-definition lossless transmission, an experience that is one level higher than CD sound quality
- Light aviation aluminum housing
- Receive Bluetooth signals from mobile phones, tablets, laptops, etc.
- AUX port supports AUX 3.5mm audio line input
- Recommended 4-8 inch 4-8Ω passive stereo speakers
- MA12070 uses a nano-level process core to achieve ultra-low power consumption and output efficiency ratio. High fidelity, retain more sound details, similar to the live effect. Rich in details and obvious dynamics
- QCC3003 high-definition lossless 5.0 Bluetooth module, using new technology, seamlessly connect to mobile phones for Android and Apple, and easily transfer lossless music
- 3pcs TL072C operational amplifier integrates pre-amplification and tone adjustment
- Its sound is mellow, the sound quality is clear and transparent, the hearing is delicate and soft, and the treble is stretched

Specifications:
- Brand: BRZHIFI
- Model: M2
- Power amplifier chip: MA12070
- Bluetooth chip: QCC3003
- Bluetooth version: HD 5.0
- Support agreement: SBC/AAC
- Wired input: AUX-3.5mm
- Power output: 2*80W 4Ω; 2*40W 8Ω
- Frequency response range: 18~25khz
- Distortion: 0.003%
- Signal to noise ratio: 110dB
- Input voltage: DC12V-24V
- Compatible speakers: 3-8" passive stereo speakers
- Size: 78mm*101mm*30mm
- N.W.: 210g

Package Included:
- 1 x Set of Power Amplifier

Note:
- Optional color: Black, Silver.
- Due to manual measurement, please allow slight error of size.
- Other items pictured are not included in the package, for demonstration purposes only. Thank you for your understanding!