Introduction
The AOSHIDA TOPPING RC-22 is a premium remote control designed for use with a wide range of TOPPING DACs (Digital-to-Analog Converters) and headphone amplifiers. Crafted from solid aluminum, this remote offers a durable and tactile user experience. It provides convenient control over your audio device's functions, enhancing your listening setup.
Compatible Models:
- D30 pro, D50S, D70, D70s, D90, D90SE
- DX3, DX3 pro, DX3 pro+, DX7, DX7 pro, DX7s
- E30, E50, EX5, DX5, DM7, D90LE
- E30II, E70, E70V, DX5 L, D70 pro, D70Pro Sabre, E30 II Lite, DX9, D70 pro OCTO, Centaurus
Setup Instructions
1. Battery Installation
The RC-22 remote control requires a CR2032 coin cell battery (not included) for operation. Follow these steps to install the battery:
- Locate the three small screws on the back of the remote control.
- Use the small tool provided in the package to carefully twist and remove these three screws.
- Gently separate the back cover from the remote to reveal the battery compartment.
- Insert one CR2032 battery into the compartment, ensuring the positive (+) side faces upwards.
- Carefully reattach the back cover, aligning it properly.
- Reinsert and tighten the three screws using the provided tool. Do not overtighten.

Figure 1: Exploded view of the RC-22 remote control, illustrating the separate components including the outer casing, button panel, circuit board, and the battery compartment area. This view helps in understanding the battery installation process.

Figure 2: Internal view of the RC-22 remote's casing, highlighting the precise fit for the internal components and the location where the battery is housed. This image provides a clear visual reference for battery placement.
Operating Instructions
The RC-22 remote control features a simplified button layout for intuitive operation. The specific functions of each button will depend on the TOPPING audio device it is paired with. Refer to the user manual of your specific TOPPING DAC or amplifier for detailed information on how each button interacts with your device.
Generally, the remote allows control over common functions such as power on/off, volume adjustment, input selection, and mode changes. The personalized setting of the buttons is designed for clear and easy use.

Figure 3: Top-down view of the RC-22 remote control, showcasing the arrangement and labeling of its buttons. This provides a visual guide to the remote's interface for general operation.
Maintenance
Cleaning
The RC-22 remote control features an all-aluminum alloy shell. To maintain its appearance, wipe the surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these may damage the finish.
Battery Replacement
When the remote control's performance degrades or it stops responding, it may be time to replace the battery. Refer to the Battery Installation section for detailed instructions on how to safely replace the CR2032 battery.
Troubleshooting
Remote Not Responding
- Check Battery: Ensure the CR2032 battery is correctly installed and has sufficient charge. Replace if necessary.
- Line of Sight: Confirm there are no obstructions between the remote control and your TOPPING audio device. The remote requires a clear line of sight to the device's IR receiver.
- Distance: Ensure you are within the effective operating range of the remote control.
Incompatibility
The RC-22 remote control is designed for specific TOPPING models. It is not compatible with the following models:
- TOPPING DX5II
- TOPPING D50III
- TOPPING D90III SABRE
- TOPPING D90III Discrete
These models require a BC15A remote control instead of the RC-22.
Specifications
| Feature | Detail |
|---|---|
| Product Model | TOPPING RC-22 |
| Material | Aluminum Alloy |
| Item Weight | 2.82 ounces (approx. 80 grams) |
| Package Dimensions | 5.04 x 3.15 x 0.31 inches |
| Power Source | 1 x CR2032 Battery (not included) |
| Max Number of Supported Devices | 1 |
| Compatible Devices | Various TOPPING Audio Devices (DACs, Headphone Amps) |
| Color | Gold (as per product listing, actual color may vary) |
Warranty and Support
Specific warranty information for the AOSHIDA TOPPING RC-22 Remote Control is not provided within the product details. For warranty claims, technical support, or further assistance, please contact the retailer from whom you purchased the product or reach out directly to AOSHIDA customer service. Contact details can typically be found on the AOSHIDA official website or through your purchase documentation.