The BK5555HL is a wireless VHF microphone system by BNK.
It’s a multi-microphone system including 2 handheld microphones and 2 headset/body-pack microphones, offering flexibility for handheld or hands-free use.
It is suitable for karaoke, stage performances, conferences, teaching/presentations, worship events, and public speaking.
🔧 Technical Specifications
| Feature | Detail |
|---|---|
| Frequency range (carrier) | 220 – 270 MHz |
| Modulation / Type | FM, VHF wireless system |
| Channels | 1, 2, or 4 channel configuration |
| Audio frequency response | 60 Hz – 16 kHz |
| Signal-to-Noise Ratio (SNR) | > 100 dB |
| Total Harmonic Distortion (THD) | < 1.2% |
| Working / Transmission range | ~50–60 meters |
| Transmitters | 2 handheld + 2 body-pack/headset |
| Receiver / Build | Metal housing with display (frequency, signal, battery status) |
| Transmitter power / battery | ~20 mW, powered by 2 × AA batteries |
| Output options | Balanced XLR + unbalanced ¼″ (TRS) |
| Polar pattern | Cardioid |
| Noise-cancellation / interference handling | Noise-cancelling design, stable frequency, good RF sensitivity and stability |
✅ Strengths & Ideal Use Cases
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Flexibility: Includes handheld and headset types for singing, speeches, or multiple users.
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Wireless mobility: 50–60 m range allows free movement for stage performances or events.
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Good audio fidelity: Covers essential vocal range; high SNR and low THD ensure clear sound.
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Multi-channel & multi-mic capability: Supports multiple users simultaneously.
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Build & reliability: Metal-bodied components, stable VHF design, and standard XLR/TRS outputs.
⚠️ Considerations
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Max effective range ~50–60 m; test for very large venues.
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Audio response top-end 16 kHz; suitable for voice but limited for very high-fidelity music recording.
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Handheld transmitters use AA batteries; rechargeable or spare batteries recommended for long events.
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Frequency interference may occur if many wireless devices are nearby; ensure proper coordination.
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