1. Introducció
The Nobsound NS-13G MAX is a high-performance Class D stereo amplifier designed for home audio systems. It integrates a powerful TPA3255 amplifier chip, delivering up to 300W per channel, and offers versatile input options including MM-Phono and stereo RCA. This amplifier is suitable for connecting various audio sources such as turntables, CD/DVD players, computers, and televisions, providing exceptional sound quality with high efficiency and low distortion.
2. Informació de seguretat
- Assegureu-vos el amplifier is placed on a stable, level surface.
- No exposeu la unitat a l'aigua, la humitat ni a temperatures extremes.
- Assegureu-vos una ventilació adequada al voltant amplifier to prevent overheating. Do not block ventilation openings.
- Use only the provided power adapter. Using an incorrect power supply may damage the unit and void the warranty.
- Disconnect the power cord from the outlet before cleaning or if the unit will be unused for an extended period.
- No intenteu obrir ni fer el manteniment de la unitat vosaltres mateixos. Encarregueu totes les tasques de manteniment a personal qualificat.
3. Contingut del paquet
Si us plau, comproveu el paquet per veure si hi ha els elements següents:
- 1x Nobsound NS-13G MAX Ampmés viu
- 1 adaptador de corrent CC de 48 V/5 A

Image: Contents of the Nobsound NS-13G MAX package, showing the amplifier unit and its power adapter.
4. Producte acabatview
4.1 Controls del panell frontal

Image: Detailed diagram illustrating the front panel controls and rear panel connections of the Nobsound NS-13G MAX ampmés viu.
- PHONO/RCA Input Switch: Selects between Phono input (for turntables) and RCA input (for other audio devices).
- Power OFF Switch: Gira el ampmés viu encès o apagat.
- Tone/Bypass Mode Switch: Engages or bypasses the Bass and Treble tone controls. In Bypass mode, audio is unprocessed for pure sound.
- Pom de baix: Ajusta la sortida de baixa freqüència.
- Pom treble: Ajusta la sortida d'alta freqüència.
- Pom de volum: Controla el volum de sortida general.
4.2 Connexions del panell posterior
- RCA IN (Left/Right): Standard stereo RCA inputs for connecting audio sources like CD players, DACs, or streaming devices.
- PHONO IN (Left/Right): Dedicated MM-Phono input for connecting turntables with a Moving Magnet cartridge. Includes a ground terminal.
- AUX OUT (3.5mm): 3.5mm auxiliary output for connecting to another amplifier, active speakers, or a subwoofer.
- SPK OUT (Banana Speaker Terminals): Outputs for connecting passive speakers. Supports banana plugs or bare wire.
- DC IN (24V-48V): Power input for the DC 48V/5A power adapter.
5. Instruccions de configuració
5.1 Connectar altaveus
- Assegureu-vos el ampl'amplificador està apagat i desendollat de la presa de corrent.
- Connecteu els vostres altaveus passius al SPK OUT banana speaker terminals on the rear panel. Ensure correct polarity (red to red, black to black) for each channel (Left and Right).
5.2 Connexió de fonts d'àudio
- For Turntables: Connect your turntable's RCA output cables to the FONO IN (Left/Right) jacks. If your turntable has a ground wire, connect it to the ground terminal next to the PHONO IN.
- For Other Audio Devices (CD Player, PC, TV, etc.): Connect your device's RCA output cables to the RCA IN (Left/Right) jacks.
5.3 Connecting to External Amplifier/Subwoofer (Optional)
- If you wish to connect an additional amplifier, active speakers, or a subwoofer, use a 3.5mm audio cable to connect the SORTIDA AUX jack on the NS-13G MAX to the input of your external device.
5.4 Connexió de potència
- Connect the DC 48V/5A power adapter to the DC IN port on the rear of the ampmés viu.
- Connecteu l'adaptador de corrent a una presa de corrent adequada.

Image: The Nobsound NS-13G MAX amplifier set up with a turntable and passive speakers, demonstrating typical connections.
6. Instruccions de funcionament
6.1 Encès/Apagat
- Després de fer totes les connexions, gireu el Apagat switch to the 'ON' position to power on the amplificador. L'indicador lluminós d'engegada s'il·luminarà.
- To power off, flip the Apagat switch to the 'OFF' position.
6.2 Selecció d'entrada
- Utilitza el PHONO/RCA Input Switch on the front panel to select the desired audio source. Set it to 'PHONO' for turntables or 'RCA' for other devices.
6.3 Control de volum
- Gira el Pom de volum clockwise to increase the volume and counter-clockwise to decrease it. Start with a low volume setting and gradually increase it to a comfortable listening level.
Control de 6.4 tons

Image: Close-up of the Nobsound NS-13G MAX front panel, highlighting the Tone/Bypass switch and Bass/Treble controls for flexible audio customization.
- El Tone/Bypass Mode Switch allows you to engage or bypass the tone controls.
- In 'TONE' mode, you can adjust the sound using the Pom de baix i Maneta d'aguts per adaptar-se a les seves preferències.
- In 'BYPASS' mode, the Bass and Treble controls are deactivated, providing a direct, unprocessed audio signal for maximum clarity and detail.
7. Manteniment
7.1 Neteja
- Netegeu l'exterior de la amplifier with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Eviteu ruixar solucions de neteja directament sobre la unitat.
7.2 Dissipació de calor

Image: Diagram illustrating the innovative heat dissipation design of the Nobsound NS-13G MAX, with air flowing through side and bottom vents.
- The NS-13G MAX features strategically placed side and bottom vents for effective heat dissipation. Ensure these vents are not obstructed to maintain optimal operating temperature and prolong the device's lifespan.
- Col·loca el amplifier in an area with adequate airflow.
7.3 Op-Amp Substitució
- The integrated NE5532P operational amplifier is designed to be pluggable, allowing for replacement with other compatible dual op-amps such as OPA2604, OPA2134, or MUSE02 for audio customization.
- Only attempt op-amp replacement if you are familiar with electronic components and static discharge precautions. Disconnect power before attempting any internal modifications.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense sortida de so |
|
|
| So distorsionat |
|
|
| La unitat se sent càlida |
|
|
| Soroll de brunzit o brunzit |
|
|
9. Especificacions
- Model: NS-13G MAX
- AmpXip lificador: TPA3255
- Op-Amp: NE5532P (pluggable)
- Entrades: MM-Phono, Stereo RCA
- Sortides: Banana Speaker Terminals, 3.5mm AUX Output
- Font d'alimentació: DC 48V/5A (included)
- Dimensions (L x A x A): Approximately 130mm x 102mm x 38mm (5.12in x 4.02in x 1.50in)
- Pes net: 513 g (1.13 lliures)
- Pes del paquet: 1.30kg (2.87 lliures)
9.1 Output Power Table

Image: Table detailing the power output of the NS-13G MAX amplifier at various power supply voltages and speaker impedances.
| Model | Font d'alimentació | Impedància de l'altaveu | Potència de sortida |
|---|---|---|---|
| NS-13G MAX | 32 V / 5 A | 4 Ω | 78W+78W |
| 6 Ω | 71W+71W | ||
| 8 Ω | 65W+65W | ||
| 36 V / 6 A | 4 Ω | 107W+107W | |
| 6 Ω | 100W+100W | ||
| 8 Ω | 94W+94W | ||
| 48 V / 5 A | 4 Ω | 120W+120W | |
| 6 Ω | 110W+110W | ||
| 8 Ω | 102W+102W | ||
| 48 V / 10 A | 4 Ω | 250W+250W | |
| 6 Ω | 210W+210W | ||
| 8 Ω | 185W+185W |
10. Informació de la garantia
Warranty information for this product is not explicitly provided in the available documentation. Please refer to the retailer or manufacturer's official weblloc web per obtenir més informació sobre la cobertura i els termes de la garantia.
11. Atenció al client
For technical assistance, troubleshooting beyond this manual, or inquiries regarding your Nobsound NS-13G MAX amplifier, please contact Nobsound customer support through their official weblloc web o el distribuïdor on vau comprar el producte.
Manufacturer: Nobsound
Weblloc: www.doukaudio.com





