1. Introducció
The Nobsound NS-05 PRO is a high-fidelity bi-directional audio converter designed to seamlessly transform RCA (unbalanced) signals to XLR (balanced) and XLR signals to RCA. This device facilitates the integration of consumer Hi-Fi equipment with professional audio systems, offering flexibility and compatibility. It features true balanced circuitry for superior noise reduction and independent volume control for each conversion path.

2. Característiques
- Bi-Directional RCA & XLR Conversion: Seamlessly transforms RCA (unbalanced) to XLR (balanced) and XLR to RCA, bridging consumer Hi-Fi gear with professional audio equipment in either direction.
- True Balanced Circuitry for Pristine Sound: Upgrades RCA signals to true balanced XLR, eliminating unwanted electrical hum, buzz, and ground loop noise for a cleaner, more detailed sound with improved signal integrity.
- Dual-Path with Independent Control: Two fully independent conversion paths operate simultaneously without interference. Each path has its own volume knob, acting as a mini-preamp for precise level matching.
- Complete Audio Compatibility: Effortlessly integrates devices such as mixers, audio interfaces, active studio monitors, power amplifiers, and DACs, ensuring stable, high-quality signal transmission for both home stereo setups and advanced audio systems.
- Construcció d'alumini premium: Crafted from a solid, compact aluminum chassis, providing robust shielding against external interference for pure signal transmission.
3. Contingut del paquet
Marqueu la casella per als elements següents:
- 1x Nobsound NS-05P PRO Converter
- 1x cable USB
- 1 x manual d'usuari

4. Producte acabatview
4.1 Controls del panell frontal
- Volume Knob (XLR input → RCA output): Adjusts the output level for the XLR to RCA conversion path.
- Botó d'encesa: Encén o apaga el dispositiu.
- Volume Knob (RCA input → XLR output): Adjusts the output level for the RCA to XLR conversion path.
4.2 Ports del panell posterior
- Sortida XLR: Balanced audio output for the RCA to XLR conversion.
- Entrada RCA: Unbalanced audio input for the RCA to XLR conversion.
- Sortida RCA: Unbalanced audio output for the XLR to RCA conversion.
- Entrada XLR: Balanced audio input for the XLR to RCA conversion.
- DC 5V IN (≥1A): USB Type-C power input.
- Terminal de terra: Ground terminal for connecting to an earth ground or metal chassis to reduce hum.

5. Instruccions de configuració
- Connexió d'alimentació: Connect the provided USB cable to the DC 5V IN (Type-C) port on the rear panel of the NS-05P PRO. Connect the other end to a DC 5V power adapter (minimum 1A, not included). The NS-05P PRO is an active converter and requires power to function.
- Connexió d'entrada d'àudio:
- For RCA to XLR conversion: Connect your RCA source device (e.g., CD player, DAC) to the RCA Input ports on the rear panel.
- For XLR to RCA conversion: Connect your XLR source device (e.g., mixer, audio interface) to the XLR Input ports on the rear panel.
- Connexió de sortida d'àudio:
- For RCA to XLR conversion: Connect your XLR receiving device (e.g., active studio monitors, power amplifier) to the XLR Output ports.
- For XLR to RCA conversion: Connect your RCA receiving device (e.g., Hi-Fi amplifier, receiver) to the RCA Output ports.
- Ground Connection (Optional, for noise reduction): If you experience hum or background noise, connect a wire from the GND terminal on the rear panel of the NS-05P PRO to a real earth ground or to the metal chassis of another audio component in your system.
- Encès: Press the Power Button on the front panel to turn on the device.
Nota important:
- The NS-05P PRO does not support RCA-to-RCA or XLR-to-XLR connections. Ensure your connections match the intended conversion path (RCA IN → XLR OUT or XLR IN → RCA OUT). Incorrect connections will result in no signal output.
- The two conversion paths (RCA to XLR and XLR to RCA) operate simultaneously and independently.

6. Instruccions de funcionament
- Encès/apagat: Use the Power Button on the front panel to switch the device on or off.
- Ajust de volum:
- Use the left volume knob to control the output level of the RCA input → XLR output path.
- Use the right volume knob to control the output level of the XLR input → RCA output path.
Each knob acts as an independent mini-preamp, allowing precise level matching between your connected components.
- Funcionament simultani: Both conversion paths can operate simultaneously without interference. You can use the NS-05P PRO to convert RCA to XLR and XLR to RCA at the same time for different audio signals.
7. Solució De Problemes
- Q: Why is the NS-05P PRO not working?
- A:
- The NS-05P PRO is an active converter and requires a DC 5V (≥1A) power supply. Please ensure the power supply is connected and functioning correctly.
- Verify that the RCA and XLR ports are connected correctly. The left side of the device handles RCA input to XLR output, and the right side handles XLR input to RCA output. The device does not support RCA-to-RCA or XLR-to-XLR connections. Incorrect connections will result in no signal output.
- Q: Why does the output volume of NS-05P PRO differ in RCA-to-XLR and XLR-to-RCA modes?
- A: When the volume knob is turned to maximum, the XLR-to-RCA mode provides a maximum gain of +5dB, resulting in a louder output. In RCA-to-XLR mode, the maximum gain is 0dB.
- Q: What should I do if I hear hum or background noise when using the NS-05P PRO?
- A: Please use a wire to connect the GND terminal on the NS-05P PRO to a real earth ground or to the metal chassis of another piece of equipment in your audio chain. If the issue persists, please contact customer support for further assistance.

8. Especificacions
| Paràmetre | Valor |
|---|---|
| Marca | Nobsound |
| Model | NS-05P PRO |
| Entrada d'àudio | RCA / XLR |
| Sortida d'àudio | XLR/RCA |
| Modes de treball | RCA IN→XLR OUT / XLR IN→RCA OUT |
| Potència requerida | Sí |
| Gain (XLR→RCA) | 5 dB |
| Gain (RCA→XLR) | 0 dB |
| THD+N | 0.008% |
| THD | 0.00007% |
| SNR | ≥89 dB |
| Channel Balance (L/R) | ≤0.01dB |
| Resposta de freqüència | 20Hz-20kHz |
| Impedància d'entrada | 20kΩ |
| Impedància de sortida | 100Ω |
| Nivell de sortida RCA | 2Vms (max) |
| Separate Volume Control | Admet |
| Entrada Voltage | DC5V (≥1A) |
| Interfície d'alimentació | USB tipus C |
| Dimensions (W*D*H) | 155*70*42mm / 6.10*2.76*1.65in |
| Pes net | 420 g / 0.92 lliures |
| Pes del paquet | 600 g / 1.32 lliures |
9. Consells d'usuari
- Font d'alimentació: Always use a stable DC 5V power supply with at least 1A output to ensure optimal performance and prevent unexpected shutdowns.
- Grounding for Noise: If you encounter any hum or buzz, utilize the GND terminal on the back of the unit. Connecting it to a common ground point in your audio system can significantly reduce noise.
- Volume Matching: Avançanttage of the independent volume knobs for each conversion path to precisely match audio levels between different components in your setup, preventing sudden volume changes or clipping.
- Qualitat del cable: Using high-quality RCA and XLR cables can further enhance signal integrity and minimize potential interference.
10. Garantia i Suport
For warranty information, technical support, or any inquiries regarding your Nobsound NS-05 PRO, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.





