🔹 Bluetooth 5.0 Connectivity – Fast and stable wireless audio streaming
🔹 Stereo Dual Channel Output – Clear left and right channel sound
🔹 Wide Voltage Input – Supports DC 8V to 24V
🔹 Volume Control Knob – Easy sound adjustment and play/pause function
🔹 Multiple Speaker Support – Compatible with 4Ω to 16Ω speakers
🔹 Clear Audio Performance – Low distortion sound quality
🔹 Reverse Connection Protection – Prevents wrong wiring damage
🔹 Short Circuit Protection – Improved safety during use
🔹 Thermal Self-Recovery – Automatically protects from overheating
🔹 Compact Shell Design – Durable and easy to install

• 🔊 70W High-Power Output: Delivers a powerful mono signal, specifically designed for driving heavy-duty speakers.

• 🏗️ D1047 Transistor Core: Utilizes premium high-current transistors for consistent professional performance.

• 📉 Class AB Efficiency: Combines the high-fidelity sound of Class A with the efficiency of Class B for over 80% power efficiency.

• 📏 Optimized for 10-Inch Drivers: Specifically tuned to provide the best response for 10-inch speakers and 8-inch cabinets.

• ⚡ Stable A.C. Input System: Designed for 25V+25V 6A AC power supplies to ensure a steady and hum-free audio experience.

• 🎸 Full Frequency Range: Covers everything from 20Hz to 2000Hz, delivering deep, punchy bass and rich mids.

• ❄️ Heavy-Duty Cooling: Features a large, high-surface-area aluminum finned heatsink to prevent thermal throttling.

• 🔗 Easy Integrated Connections: Clearly labeled board for Speaker Ground, Audio Input, and A.C. Power for fast wiring.

• 🛡️ Wide Impedance Range: Supports a variety of speaker configurations from 4$\Omega$ to 8$\Omega$ with ease.

• 🛠️ DIY Enthusiast Friendly: The ideal core component for building Subwoofers, Home Audio Upgrades, or Portable PA Systems.

• Color: Blue
• Material: metal
• The on-board TDA7297 audio power amplifier chip. double channel 15W+15W.
• speaker for European 4-8 10-50W use
• Main pin has led chip. convenient external control device. the onboard
• 5.08 (mm) distance between two p terminal 2 road. around a track connection
• output respectively
• The on-board dial potentiometer. output size can adjust the volume
• Support DC. terminal blocks. row needles 3 power input mode. the default
• Power input mode is DC 5.5 * 2.5 seat
• Working voltage: 6-18V
• Board size: 45 (mm) x33 (mm)

• 🎵 2.1 Channel Output – Stereo (18W+18W) + Subwoofer (18W)

• 🔧 High-Quality Chipset – TDA2030 for output stage, JRC4558 for bass filtering

• ⚡ Input Supply – Operates on 12-0-12V AC (Requires at least 4A transformer)

• 🔊 Powerful Bass Output – Low-pass filter enhances subwoofer performance

• 🧲 Speaker Compatibility –

  • Subwoofer: 4-6″, 4-6Ω, 20W

  • Left/Right: 3-4″, 4-8Ω, 10-25W

• 🔁 High Efficiency – Over 90% power efficiency

• 📦 Compact Size – 11 × 6.5 × 4 cm, fits easily in enclosures

• 📈 Frequency Response –

  • Full-range: 20Hz – 2kHz

  • Subwoofer: 20Hz – 250Hz

🔊 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

• 🔊 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)