1. Introduktion
The Topping PA3S is a high-performance Class D power amplifier designed for audio enthusiasts. It features a fully balanced design with dual MA12070 amplifier chips, offering both balanced (TRS) and single-ended (RCA) inputs. This manual provides detailed instructions for setting up, operating, and maintaining your PA3S amplifier for at sikre optimal ydeevne og lang levetid.
2. Nøglefunktioner
- Dual MA12070 Fully Balanced Class D Amplivligere: Each channel utilizes a dedicated MA12070 chip for improved performance, reduced crosstalk, and enhanced reliability.
- Høj udgangseffekt: Delivers 80W x 2 at 4Ω (10% THD+N) or 65W x 2 at 4Ω (1% THD+N), sufficient to drive various bookshelf and floor-standing speakers.
- Balanced and Single-Ended Inputs: Equipped with TRS balanced inputs to eliminate ground loop issues and RCA single-ended inputs for versatile connectivity.
- Optimized Distortion Performance: Achieves lowest THD+N in the 10-20W output range, ideal for typical listening volumes.
- Udvidelig funktionalitet: Can be paired with a Digital-to-Analog Converter (DAC) or DAC+Headphone Amplifier (HPA) for broader digital input options and comprehensive audio setups.

Image: Summary of key features including power output, THD+N, amplifier type, and input options.
3. Pakkens indhold
Tjek venligst pakken for følgende varer:
- Topping PA3S Power Amplifier enhed
- Strømadapter
- Brugermanual
Hvis der mangler eller er beskadigede varer, bedes du kontakte din forhandler.
4. Produktet er slutview
4.1 For- og bagpaneler

Image: Front panel showing power/select button and volume knob, and rear panel with input and output connections.
Frontpanel:
- Power / Select Button: Press to power on/off. Short press to cycle between SE (Single-Ended) and BAL (Balanced) inputs.
- Input Indicators (SE/BAL): LEDs indicate the currently selected input.
- Lydstyrkeknap: Rotates to adjust the output volume.
Bagside:
- TRS Balanced Input (L/R): For connecting audio sources with balanced outputs.
- RCA Single-Ended Input (L/R): For connecting audio sources with single-ended RCA outputs.
- Højttalerudgange (V/H): Connect to passive speakers. Ensure correct polarity.
- DC 26V strømindgang: Tilslut den medfølgende strømadapter.
4.2 Indvendigt design

Billede: Intern view highlighting the dual MA12070 Class D amplifier chips with heat sinks.
The PA3S employs two MA12070 Class D power amplifier chips, with one chip dedicated to each channel. This design optimizes layout, reduces crosstalk between channels, and distributes the power load, enhancing reliability and extending the product's lifespan.
4.3 Dimensioner

Image: Diagram illustrating the physical dimensions of the Topping PA3S amplifier (12.0cm width, 16.8cm depth, 4.0cm height).
5. Opsætningsvejledning
Follow these steps to set up your Topping PA3S amplivligere:
- Placering: Place the PA3S on a stable, flat surface with adequate ventilation. Avoid placing it near heat sources or in direct sunlight.
- Tilslut højttalere: Connect your passive speakers to the speaker output terminals on the rear panel. Ensure correct polarity (+ to + and - to -) for both left and right channels. Use high-quality speaker cables.
- Tilslut lydkilde:
- For Balanced Input: Connect your audio source (e.g., DAC with balanced output) to the TRS Balanced Input (L/R) using TRS cables.
- For Single-Ended Input: Connect your audio source (e.g., DAC, CD player) to the RCA Single-Ended Input (L/R) using RCA cables.
- Tilslut strøm: Connect the provided DC 26V power adapter to the power input on the rear panel, then plug the adapter into a wall outlet.
- Indledende lydstyrkeindstilling: Before powering on, turn the volume knob to its minimum (Min) position to prevent sudden loud sounds.
6. Betjeningsvejledning
- Tænd: Press the Power / Select button on the front panel. The corresponding input indicator (SE or BAL) will light up.
- Vælg input: Short press the Power / Select button to cycle between the SE (Single-Ended) and BAL (Balanced) inputs. The active input will be indicated by its illuminated LED.
- Juster lydstyrken: Slowly rotate the volume knob clockwise to increase the volume to your desired listening level. Rotate counter-clockwise to decrease.
- Sluk: Press and hold the Power / Select button for a few seconds until the unit powers off.
7. Vedligeholdelse
- Rensning: Brug en blød, tør klud til at rengøre ydersiden af ampBrug ikke flydende rengøringsmidler eller slibende materialer.
- Ventilation: Ensure that the ventilation holes are not blocked to prevent overheating.
- Opbevaring: When not in use for extended periods, disconnect the power adapter and store the unit in a cool, dry place.
- Undgå væsker: Udsæt ikke amplifier to water or other liquids.
8. Fejlfinding
If you encounter issues with your PA3S, refer to the following common problems and solutions:
- Ingen lyd:
- Check if the power adapter is securely connected and the unit is powered on.
- Verify that the correct input (SE or BAL) is selected.
- Ensure speaker cables are correctly connected and not loose.
- Check the volume level; it might be set too low.
- Confirm the audio source is functioning correctly and outputting sound.
- Forvrænget lyd:
- Reducer lydstyrken.
- Check if the audio source output is too high, causing clipping.
- Sørg for, at alle kabler er korrekt tilsluttet og ikke er beskadigede.
- Kontroller, at højttalerimpedansen stemmer overens amplifier's recommended range (4-8Ω).
- Summende eller summende støj:
- If using RCA inputs, try switching to TRS balanced inputs if your source supports it, as balanced connections are less susceptible to ground loops.
- Sørg for, at alle forbindelser er tætte.
- Prøv at tilslutte amplifier and source into different power outlets or a different circuit.
- Flyt ampFjern fjernbetjeningen fra andre elektroniske enheder, der kan forårsage interferens.
Hvis problemet fortsætter, bedes du kontakte kundesupport.
9. Specifikationer
9.1 Generelle specifikationer
- Mærke: Fanmusic (Topping)
- Model: PA3S
- Antal kanaler: 2
- Monteringstype: Overflademontering
- Voltage: 48 Volts (Input to power adapter)
- Fabrikant: TOPPNING
9.2 Detailed Performance Specifications

Image: Detailed table of PA3S specifications for Single-Ended (SE IN) and Balanced (BAL IN) inputs.
| Parameter | SE IN | BAL IN |
|---|---|---|
| THD+N @1kHz (A-wt) | <0.0050% @4Ω 5W <0.0040% @8Ω 5W | <0.0045% @4Ω 5W <0.0040% @8Ω 5W |
| THD @20-10kHz (20kBW) | <0.0080% @4Ω 5W <0.0070% @8Ω 5W | <0.0070% @4Ω 5W <0.0060% @8Ω 5W |
| SNR @MAX OUT 1kHz (A-wt) | 107dB | 112dB |
| Dynamisk rækkevidde | 107dB | 112dB |
| Frekvensrespons | 20Hz-40kHz (±0.1dB) | 20Hz-40kHz (±0.1dB) |
| Udgangsniveau | 46Vpp @4Ω 48Vpp @8Ω | 46Vpp @4Ω 48Vpp @8Ω |
| Støj (A-wt) | <70uVrms | <70uVrms |
| Kanal Crosstalk @1kHz | -96dB | -100dB |
| Indgangsfølsomhed | 0.92Vrms | 1.75Vrms |
| Gevinst | 25.2dB | 19.5dB |
| Kanalbalance | 0.5 dB | 0.5 dB |
| Udgangseffekt | 80W x 2 @4Ω THD+N<10% 45W x 2 @8Ω THD+N<10% 65W x 2 @4Ω THD+N<1% 37W x 2 @8Ω THD+N<1% | |
| Adapter impedans | 4-8Ω | |
10. Sikkerhedsoplysninger
- Do not disassemble or modify the unit. This may void the warranty and pose a safety risk.
- Use only the provided power adapter. Using an incorrect adapter may damage the unit or cause fire.
- Hold enheden væk fra vand, fugt og miljøer med høj luftfugtighed.
- Ensure proper ventilation to prevent overheating. Do not cover the unit.
- Undgå at placere tunge genstande på enheden.
- In case of smoke, unusual odors, or abnormal operation, immediately disconnect the power adapter and contact support.
11. Garanti og support
The Topping PA3S amplifier comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package or contact your retailer for specific warranty terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact the retailer where you purchased the product or visit the official Topping webwebsted for kontaktoplysninger.