The HI-POWER PAD-50 Amplifier is a multi-functional audio power amplifier designed to deliver clear, robust sound for a variety of applications. This compact unit serves as a versatile central hub for your audio needs, enabling the amplification of diverse sound sources to drive passive speakers effectively. It typically combines modern wireless connectivity with traditional wired inputs, along with a flexible power supply, making it ideal for both indoor and outdoor use.
Technical Specification
Audio Performance:
- Power Output (RMS):
- 25W + 25W (50W total) @ 4Ω or 8Ω (Stereo Mode)
- Note: Peak power/PMPO ratings may be significantly higher (e.g., 500W-1000W PMPO), but RMS is the true continuous power output.
- Frequency Response: 20Hz – 20kHz (±2dB)
- Signal-to-Noise Ratio (S/N): ≥ 85dB
- Total Harmonic Distortion (THD): < 0.5% (at 1kHz, 1W)
- Input Sensitivity (Aux): 200mV (±20mV)
- Speaker Impedance: 4Ω – 16Ω (compatible with most passive speakers)
Inputs & Outputs:
- Audio Inputs:
- Bluetooth: Version 4.0 / 5.0 (typical range: up to 10 meters)
- USB: Type A port (for USB flash drives, supports FAT32 format)
- SD Card Slot: (Supports SD/MMC cards, typically up to 32GB)
- AUX Input: 1-2 sets of RCA stereo inputs
- Microphone Inputs: 2-3 x 6.35mm (1/4″) TS unbalanced microphone jacks
- Audio Outputs:
- Speaker Terminals: Spring clip or screw terminals (for passive speakers)
- Stereo Left/Right (L/R)
- Optional: Constant Voltage (CV) Outputs (e.g., 70V / 100V for PA systems)
- Antenna: FM Radio antenna connection (coaxial or wire terminal)
Controls & Features:
- Master Volume Control
- Microphone Volume Controls: Independent for each microphone input
- Echo Control: For microphone effects
- Treble Control: ±10dB to ±12dB
- Bass Control: ±10dB to ±12dB
- Input Selector: (Bluetooth / USB / SD / FM / AUX)
- Mode/Function Buttons: Play/Pause, Next/Previous Track, FM Scan, etc.
- Display: LED or LCD segment display
- Remote Control: Infrared (IR) remote control included
Power Supply:
- AC Mains Power: 220V – 240V AC, 50/60Hz (Regional variations may exist, e.g., 110V AC)
- DC Power Input: 12V DC (5A – 10A recommended, depending on output power) via terminal block or DC jack.
- Power Consumption:
- Operating: 60W – 100W (at rated output)
- Standby: < 5W
Protection:
- Short Circuit Protection
- Overload Protection
- Over-temperature Protection
Physical & Environmental:
- Chassis Material: Metal and/or plastic housing
- Dimensions (Approximate):
- Width: 160mm – 250mm
- Depth: 120mm – 200mm
- Height: 50mm – 80mm
- Weight (Approximate): 1.0 kg – 2.5 kg
- Cooling: Passive (heatsink) or small internal fan
- Operating Temperature: 0°C to +40°C
- Humidity: 10% to 90% non-condensing
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