Sysolution Smart Adjustable Digital Power Amplifier R56B

The R56B is a high-performance intelligent digital power amplifier board. It features a dual-chip architecture combining an efficient Class-D stereo amplifier chip with a ground-isolated noise reduction chip, integrating stereo power amplification, intelligent power-on/off control, volume adjustment, and active noise reduction. The product is suitable for applications such as audio DIY projects, smart speakers, automotive audio systems, embedded audio devices, and more.

This product offers a wide voltage input range, high efficiency output, multiple protection mechanisms, and intelligent control functions, enabling high-quality audio playback and system-level integrated control.

Typical Application Scenarios

• DIY smart speakers
• Automotive audio system upgrades
• Desktop speakers / soundbars
• Embedded audio playback devices
• Audio modules for self-service kiosks

Features:

• High-performance amplifier core: Class-D amplifier chip delivering up to 2 × 50 W stereo output (at 4 Ω load) with efficiency > 90%.
• Active ground-isolated noise reduction: Integrated ground-isolated amplifier effectively eliminates common-ground noise and ground loop interference, with a typical CMRR of 57 dB (@ 1 kHz).
• Smart power-on/off control: Volume potentiometer integrated with power switch function; soft-start on power-up prevents pop-noise.
• Select-able stereo/mono modes: Supports switching between stereo BTL mode and mono PBTL mode to suit different application requirements.
• Multiple protection mechanisms: Built-in short-circuit protection, over-temperature protection, over-voltage/under-voltage protection, and DC protection ensure safe and reliable system operation.
• Wide voltage operating range: Supports DC 5 V–12 V input, accommodating various power supply options.
• Flexible audio input: Provides an AUX IN line-level audio input interface, compatible with a wide range of audio source devices.

Parameter Value Unit Overall Dimensions (L×W×H) 85.8*80*26.5 mm Mounting Hole Diameter 3.2 mm Mounting Hole Spacing 18 mm Weight 166 g