1. Introducció
Gràcies per la compraasing the TOPPING A70 Pro Headphone Amplifier i Preamp. This device is engineered to deliver exceptional audio performance with its advanced T'ang-ku-la Module, ultra-low noise circuit, and precise R2R volume control. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your A70 Pro to ensure optimal performance and longevity.
Si us plau, llegiu aquest manual detingudament abans d'utilitzar el producte i guardeu-lo per a futures consultes.
Imatge: Frontal view of the TOPPING A70 Pro Headphone Amp & Preamp, espectacleasing its sleek black design, display screen, and front panel connectors.
2. Informació de seguretat
- No desmunteu ni modifiqueu el dispositiu. Les modificacions no autoritzades poden anul·lar la garantia i plantejar riscos per a la seguretat.
- Mantingueu el dispositiu allunyat de l'aigua, la humitat i les altes temperatures.
- Assegureu-vos una ventilació adequada al voltant del dispositiu per evitar el sobreescalfament.
- Use only the provided power cable and accessories.
- Eviteu col·locar objectes pesats a sobre del dispositiu.
- Desconnecteu el cable d'alimentació durant tempestes amb llamps o quan no l'utilitzeu durant períodes prolongats.
3. Contingut del paquet
En obrir el paquet, comproveu que tots els elements hi siguin presents i que estiguin en bon estat:
- TOPPING A70 Pro Unit
- Control remot
- Cable d'alimentació de CA.
- 6.35 mm to 3.5 mm Adaptor
- Guia d'inici ràpid
- Targeta de garantia
Image: A visual representation of the TOPPING A70 Pro package contents, including the main unit, remote control, AC cable, 6.35mm to 3.5mm adapter, and warranty card.
4. Producte acabatview
4.1 Tauler frontal
The front panel features the display screen, touch buttons for navigation, headphone outputs, and the volume knob.
- Pantalla de visualització: Full-color screen displaying playback information, FFT, VU meter, and settings.
- Botons tàctils: Three capacitive touch buttons for menu navigation and selection.
- Sortides d'auriculars: Balanced XLR 4-pin, 4.4mm balanced, and 6.35mm single-ended outputs.
- Pom de volum: Precise R2R relay volume control.
Imatge: Una imatge detallada view of the TOPPING A70 Pro's front panel, highlighting the display, headphone jacks, and volume control knob.
4.2 Panell posterior
The rear panel houses the power input, audio inputs, and the GND/LIFT switch.
- Entrada d'alimentació: AC power connector.
- Entrades d'àudio: Balanced XLR and single-ended RCA inputs.
- Interruptor GND/LIFT: For eliminating ground loop noise.
- Disparador de 12 V: Input and output for synchronized power control with other devices.
Image: A close-up of the TOPPING A70 Pro's rear panel, illustrating the power input, audio input connectors, and the GND/LIFT switch.
5. Configuració
5.1 Connexió de potència
- Ensure the A70 Pro is turned off.
- Connect the provided AC power cable to the power input on the rear panel of the A70 Pro.
- Connecteu l'altre extrem del cable d'alimentació a una presa de corrent adequada.
5.2 Connexió de fonts d'àudio
The A70 Pro supports both balanced XLR and single-ended RCA inputs. For optimal performance, use balanced connections when possible.
- Entrada XLR: Connect your balanced audio source (e.g., DAC) to the XLR input ports on the rear panel.
- Entrada RCA: Connect your single-ended audio source to the RCA input ports on the rear panel.
The A70 Pro can be expanded with the Ext90 input expansion module (sold separately) to provide a total of four balanced XLR and two single-ended RCA inputs.
Image: A diagram illustrating how the TOPPING A70 Pro's inputs can be expanded using the optional Ext90 module, showing multiple XLR and RCA connections.
5.3 Connecting Headphones/Preamps
- Auriculars: Connect your headphones to the appropriate output jack on the front panel (XLR 4-pin, 4.4mm balanced, or 6.35mm single-ended). Use the 6.35 mm to 3.5 mm adaptor if your headphones have a 3.5mm plug.
- PreampSortida de lifier: The A70 Pro can also function as a preamplifier. Connect its output to a power amplifier or active speakers using balanced XLR or single-ended RCA cables from the rear panel.
5.4 Ground Loop Noise Elimination
If you experience humming or buzzing noise due to ground loops when connecting multiple devices, use the GND/LIFT switch on the rear panel.
- GND (terra): Default setting, connects the chassis ground to the audio ground.
- LIFT (Ground Lift): Disconnects the chassis ground from the audio ground, which can eliminate ground loop noise. Toggle this switch if noise is present.
5.5 12V Trigger Connection
The 12V Trigger allows the A70 Pro to be turned on/off in sync with other compatible audio equipment.
- 12V Trigger IN: Connect a 12V trigger output from another device to this input. The A70 Pro will power on/off with that device.
- 12V Trigger OUT: Connect this output to the 12V trigger input of another device. The A70 Pro will control the power of that device.
6. Instruccions de funcionament
6.1 Encès/Apagat
Press the power button on the front panel or use the remote control to turn the A70 Pro on or off.
6.2 Control de volum
The A70 Pro features a precise R2R relay volume control module for accurate adjustments.
- Rotate the volume knob on the front panel to adjust the output volume.
- Use the volume up/down buttons on the remote control for remote adjustment.
- The A70 Pro remembers 8 independent volume settings for various outputs, automatically reverting to the last used volume upon selection.
Image: A visual demonstrating the volume memory feature and the included remote control for the TOPPING A70 Pro.
6.3 Selecció d'entrada
Use the touch buttons on the front panel or the remote control to cycle through available audio inputs (XLR, RCA).
6.4 Configuració del guany
The A70 Pro offers multiple gain settings to accommodate various headphones and listening preferences. Adjust the gain via the menu system on the display.
6.5 Aurora U/I and Display Options
The full-color display provides a user-friendly interface with customizable options:
- Playback Info: Displays current volume, input, and output mode.
- FFT (Transformada Ràpida de Fourier): Visualizes the frequency spectrum of the audio.
- VU Meter: Analog-style volume unit meter for visual feedback.
- Personalització: Adjust display brightness, screen timeout, and other preferences through the settings menu.
7. Manteniment
- Neteja: Use a soft, dry cloth to wipe the exterior of the device. Do not use liquid cleaners or abrasive materials.
- Ventilació: Ensure the ventilation holes are clear of dust and obstructions to prevent overheating.
- Emmagatzematge: Quan no l'utilitzeu durant períodes prolongats, guardeu el dispositiu en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | Cable d'alimentació no connectat; Problema amb la presa de corrent | Comproveu la connexió del cable d'alimentació; proveu una presa de corrent diferent |
| Sense sortida de so | Incorrect input selected; Volume too low; Headphone/speaker connection issue | Verify input selection; Increase volume; Check headphone/speaker cables |
| Soroll de brunzit/brunzit | Interferència del bucle de terra | Toggle the GND/LIFT switch on the rear panel |
| El comandament a distància no funciona | Batteries low/dead; Obstruction between remote and unit | Replace batteries; Ensure clear line of sight to the unit's IR receiver |
9. Especificacions
| Característica | Detall |
|---|---|
| Model | A70Pro-Black |
| Potència de sortida | 17000 mW x 2 |
| Interval dinàmic | 147 dB |
| Control de volum | Precise R2R Relay Volume Control |
| Volume Memories | 8 independent settings |
| Mostra | Full Color Aurora U/I (Playback info, FFT, VU) |
| Rendiment de soroll | Ultra-low noise circuit, <0.2uVrms @G=L, <0.8uVrms @G=H |
| Impedància d'entrada | 20kΩ |
| Eliminació del bucle de terra | GND/LIFT switch |
| Dimensions | 22.2 cm (A) x 17.6 cm (F) x 4.8 cm (Al) |
| Pes de l'article | 4.8 lliures |
10. Garantia i Suport
The TOPPING A70 Pro comes with a warranty as detailed on the included Warranty Card. Please refer to the card for specific terms and conditions.
For technical support, product inquiries, or warranty claims, please contact TOPPING customer service through the official TOPPING website or your authorized dealer. The Quick Start Guide also contains initial support information.
You can visit the official TOPPING store for more information: TOPPING Store on Amazon
