📡 Bluetooth 4.2 Connectivity – Fast, stable, and widely compatible
🔊 5W+5W Stereo Output – Clear and powerful dual-channel sound
🎧 Auto Pairing Function – Connects automatically to saved devices
📶 15m Wireless Range – Strong signal in open space
💎 Good Sound Quality – Enhanced audio performance (8002 level)
🔌 USB Sound Card Support – Plug & play, no drivers needed
🔋 Charging Port Built-In – Supports lithium battery charging
⚡ Efficient Power Use – Works best with 5V 2A supply
🛠️ DIY Friendly Design – Perfect for custom speaker builds
📦 Compact Module – Easy to install in small enclosures

🔊 70W Powerful Bass Output – Deep and punchy low frequencies
🎚️ Low Pass Filter (20Hz–200Hz) – Dedicated bass performance
💎 Class AB Design – Balanced efficiency and sound quality
⚡ High Efficiency (>90%) – Better power utilization
🛠️ Quality Components – LM324 + D1047/B688 transistor design
📢 4Ω–8Ω Speaker Support – Flexible compatibility
🔥 Strong & Clean Bass – No distortion, smooth output
🔧 DIY Friendly Board – Ideal for custom audio builds
📏 Compact Size – Easy to fit in enclosures
💼 Professional Performance – Great for home and car audio systems

🎵 Dual-channel 15W+15W stereo output
💡 LED indicators for easy monitoring and control
🔧 Onboard potentiometer for adjustable volume
⚡ Works with 9V–15V DC power supply
🛠️ Supports 4–8Ω speakers, 10–50W
📏 Compact 55×55mm size, easy to install
🔌 Flexible input: DC, terminal, or 3-pin mode
🎚️ Clear and stable audio amplification
✅ High-quality TDA7297 chip for reliable performance
🌍 Ideal for DIY audio systems, mini speakers, and portable electronics

• 🎤 Dual Microphone Support: Features two dedicated mic ports for group performances and professional duets.

• ✨ Legendary PT2399 Echo: Powered by the original processing chip for the standard echo effect found in professional DVD players.

• 🎛️ 5-Knob Precision Control: Take full command with individual knobs for Mic Volume, Echo, Bass, Tone, and Aux Music Volume.

• ⚡ High-Fidelity Pre-Amp: Equipped with JRC4558 dual op-amps for clean, powerful signal processing and minimal noise.

• 🎶 Independent Mixing: Seamlessly blend your vocals with background music using the Independent Aux Volume control.

• 🔄 Customizable Reverb: The onboard Echo CTRL knob allows you to fine-tune the delay time for a custom acoustic feel.

• 📱 Universal Aux Input: Easily connect your Phone, PC, or CD player as a music source via the standard input pads.

• 🏗️ Sammar Electronics Build: Precision-manufactured (Model SK177) with high-grade components for industrial-level durability.

• 🛡️ Low Noise Floor: Engineered with advanced filtering to ensure a pure signal path free from background hum.

• 📦 DIY Karaoke Ready: The perfect core module for building Custom Karaoke Machines, PA Systems, and Home Theaters.

• 🚀 TRUE 2.1 CHANNEL SOUND: Delivers dedicated power to Left and Right speakers (6W each) plus a robust 10W Subwoofer output.

• 🧠 ADVANCED TEA2025B CHIP: Utilizes the high-efficiency TEA2025B amplifier chip for reliable, high-quality audio performance.

• 🔌 DUAL POWER INPUTS: Highly flexible power options; supports either AC 6V or DC 6V–9V input.

• 🎛️ DUAL ON-BOARD CONTROLS: Comes equipped with high-quality potentiometers to independently adjust Woofer Volume and Main Amplifier Volume.

• 🏗️ STURDY COMPONENT BUILD: Features large aluminum heat sinks to ensure the amplifier stays cool during peak performance.

• 🔊 WIDE SPEAKER COMPATIBILITY: Perfectly matched for 4–8 Ohm speakers and subwoofers ranging from 3 to 5 inches.

• 🚨 BUILT-IN POWER INDICATOR: Includes a vibrant red LED to show at a glance when the system is powered on and ready to play.

• 🛠️ USER-FRIENDLY CONNECTIONS: Features a clearly labeled PCB for “Audio Input,” “Speakers Output,” and “Woofer Output,” making DIY installation a breeze.

• 🔊 MASSIVE 140W STEREO OUTPUT – Delivers a powerful 70W + 70W across two channels, providing enough energy to fill large rooms with immersive sound.

• 🎼 CLASS AB FIDELITY – Combines the efficiency of Class B with the low distortion of Class A, ensuring a smooth, natural audio response.

• ⚡ HIGH-EFFICIENCY POWER – Operates at over 80% power efficiency, meaning more energy goes to your music and less is wasted as heat.

• 🏗️ ROBUST THERMAL DESIGN – Equipped with four individual aluminum heat sinks to keep the high-power transistors cool during extended use.

• 📉 WIDE FREQUENCY RANGE – Supports a broad response from 20Hz to 2000Hz, capturing everything from deep sub-bass to clear mid-tones.

• 🔌 DUAL AC POWER INPUT – Optimized for high-performance transformers with a recommended supply voltage of 25V + 25V AC.

• 📻 VERSATILE IMPEDANCE – Perfectly compatible with speakers ranging from 4Ω to 8Ω, giving you the flexibility to use a variety of cabinet types.

• 🛠️ EASY CONNECTIONS GUIDE – Features clearly labeled onboard points for Audio Input, Speaker Output, and AC Power, making DIY installation a breeze.

• Frequency response: 20Hz to 2000Hz
• Speakers size: 8 to 10 inches (10 inches recommended)