1. Introduction
The TOPPING E70 Velvet is a high-performance Digital-to-Analog Converter (DAC) designed to deliver exceptional audio fidelity. Featuring the AK4499EX DAC chip, Bluetooth 5.1 with LDAC support, and versatile input/output options, the E70 Velvet provides a pristine listening experience for audiophiles and music enthusiasts. This manual provides detailed instructions for setting up, operating, and maintaining your E70 Velvet DAC.
2. Safety Information
- Do not disassemble or modify the device. Unauthorized modifications may void the warranty and pose safety risks.
- Keep the device away from water, moisture, and extreme temperatures.
- Ensure proper ventilation around the device to prevent overheating.
- Use only the specified power adapter and cables.
- Avoid placing heavy objects on top of the device.
- Disconnect the power cable during lightning storms or when unused for long periods.
3. Package Contents
Please check the package carefully to ensure all items are present and in good condition:
Image: The package contents of the TOPPING E70 Velvet. This includes the E70 Velvet DAC unit, a remote control, a USB cable, a power cable, a Bluetooth antenna, a user manual, and a warranty card.
- TOPPING E70 Velvet DAC Unit
- Remote Control
- USB Cable
- Power Cable
- Bluetooth Antenna
- User Manual (Quick Start Guide)
- Warranty Card
4. Product Overview
4.1 Front Panel
Image: Front view of the TOPPING E70 Velvet DAC, showing the display screen, power/select button, and a large rotary knob on the right.
- Display Screen: Shows current input, sampling rate, and output level.
- Power/Select Button: Press to power on/off, short press to cycle through inputs.
- Rotary Knob: Adjusts volume in preamplifier mode, navigates menus.
4.2 Rear Panel
Image: Rear view of the TOPPING E70 Velvet DAC, displaying various input and output ports including XLR, RCA, Coaxial, Optical, USB, Bluetooth antenna connector, 12V Trigger, and power input.
- XLR Outputs (L/R): Balanced audio output.
- RCA Outputs (L/R): Single-ended audio output.
- Coaxial Input: Digital audio input.
- Optical (TOSLINK) Input: Digital audio input.
- USB Input: For connecting to computers or mobile devices.
- BT (Bluetooth) Antenna Connector: For Bluetooth signal reception.
- 12V Trigger (IN/OUT): For synchronized power control with other compatible devices.
- Power Input: 100-240V AC 50-60Hz.
5. Setup
5.1 Power Connection
- Connect the provided power cable to the power input on the rear panel of the E70 Velvet.
- Plug the other end of the power cable into a suitable AC power outlet.
5.2 Audio Input Connections
Choose the appropriate input based on your source device:
- USB: Connect a USB cable from your computer (Windows, Mac, Linux), iOS, or Android device to the USB input on the E70 Velvet. For Windows, a driver may be required (see section 5.4).
- Coaxial/Optical: Connect a coaxial or optical cable from your digital audio source (e.g., CD player, streamer) to the corresponding input on the E70 Velvet.
- Bluetooth: Screw the provided Bluetooth antenna onto the BT connector on the rear panel.
5.3 Audio Output Connections
Connect the E70 Velvet to your amplifier or active speakers:
Image: A detailed view of the balanced XLR (left) and single-ended RCA (right) output ports on the rear of the E70 Velvet DAC.
- Balanced Output (XLR): For optimal performance, connect XLR cables from the E70 Velvet's XLR outputs to the balanced inputs of your amplifier.
- Single-Ended Output (RCA): Connect RCA cables from the E70 Velvet's RCA outputs to the single-ended inputs of your amplifier.
- Both XLR and RCA outputs can be used simultaneously.
5.4 Driver Installation (Windows Only)
For Windows operating systems, a specific driver is required for optimal USB audio performance (ASIO applications). Mac, Linux, iOS, and Android systems are driver-free.
- Download the latest driver from the official TOPPING website (www.topping.audio).
- Run the installer and follow the on-screen instructions.
- After installation, restart your computer if prompted.
Image: A screenshot illustrating the Windows sound settings interface, showing options for selecting audio playback devices and their properties, relevant for driver installation and configuration.
5.5 12V Trigger Connection
The 12V Trigger interface allows the E70 Velvet to synchronize power on/off with other compatible devices, such as the TOPPING L70 amplifier.
- Connect a 3.5mm trigger cable from the 12V Trigger OUT of the E70 Velvet to the 12V Trigger IN of your other device.
- When the E70 Velvet powers on/off, the connected device will follow suit.
6. Operating Instructions
6.1 Power On/Off
- Press the power/select button on the front panel or the power button on the remote control to turn the device on or off.
- The E70 Velvet also features an Auto On/Off function, which automatically powers the unit on when a valid signal is detected and off after a period of inactivity.
6.2 Input Selection
- Short press the power/select button on the front panel to cycle through available inputs (USB, Coaxial, Optical, Bluetooth).
- Alternatively, use the input selection buttons on the remote control.
6.3 DAC Mode vs. Preamplifier Mode
The E70 Velvet can operate in two modes:
- DAC Mode: Provides a fixed output level, ideal when connecting to an amplifier with its own volume control.
- Preamplifier Mode: Allows you to adjust the output volume from -99dB to 0dB using the front panel rotary knob or the remote control. This is useful when connecting directly to power amplifiers or active speakers.
Switching between modes is typically done via the device's menu settings, accessible through the rotary knob or remote.
Image: The TOPPING E70 Velvet DAC positioned between two white active speakers, with its remote control in the foreground, demonstrating a typical setup for preamplifier mode.
6.4 Bluetooth Pairing
- Ensure the Bluetooth antenna is connected.
- Select Bluetooth as the input source on the E70 Velvet.
- On your mobile device or computer, search for Bluetooth devices and select "TOPPING E70 Velvet" to pair.
- Once paired, audio from your device will be streamed to the E70 Velvet.
7. Key Features and Technologies
7.1 AK4499EX DAC Chipset
The E70 Velvet utilizes the flagship AK4499EX DAC chip, known for its exceptional sound quality and low noise performance. This, combined with a low-noise voltage reference power supply, ensures ultra-clear audio reproduction.
Image: A close-up internal view of the TOPPING E70 Velvet's circuit board, highlighting the AK4499EX DAC chip and associated low-noise voltage reference power supply components.
7.2 Ultra-Low THD+N
The E70 Velvet boasts an incredibly low Total Harmonic Distortion + Noise (THD+N) of less than 0.00006% (A-weighted). This ensures that the audio signal is reproduced with extreme accuracy and minimal distortion, preserving every detail of the music.
Image: A technical graph displaying the THD+N and SINAD measurements of the TOPPING E70 Velvet, demonstrating its ultra-low distortion and noise performance.
7.3 XMOS XU316 USB Interface
Equipped with the advanced XMOS XU316 USB input, the E70 Velvet supports high-resolution audio formats including DSD512 and PCM up to 768kHz. This ensures wide compatibility with various operating systems and high-fidelity audio playback.
Image: A close-up photograph of the XMOS XU316 chip, a key component for USB audio processing, mounted on the circuit board of the E70 Velvet.
7.4 Bluetooth 5.1 with LDAC
The E70 Velvet features Bluetooth 5.1 connectivity with support for high-resolution codecs like LDAC, AAC, SBC, and aptX. The signal is digitally transmitted to the AK4499EX DAC for optimal wireless sound quality, certified by Hi-Res Audio Wireless.
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use for extended periods, store the device in a cool, dry place, away from direct sunlight and dust.
- Ventilation: Ensure the ventilation holes are not blocked to prevent overheating.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output | Incorrect input selected; cables loose; amplifier off; E70 Velvet in DAC mode with no volume control. | Verify input selection; check all cable connections; ensure amplifier is on and set to correct input; switch E70 Velvet to preamplifier mode or adjust volume on amplifier. |
| Device not powering on | Power cable not connected; power outlet issue. | Check power cable connection; try a different power outlet. |
| Bluetooth connection unstable or not pairing | Antenna not connected; interference; device too far; E70 Velvet not in Bluetooth input mode. | Ensure Bluetooth antenna is securely attached; reduce distance between devices; remove obstacles; select Bluetooth input on E70 Velvet. |
| Error code "PNH" on display | Internal system error. | Disconnect power, wait 30 seconds, then reconnect. If the error persists, contact TOPPING support. |
| No sound from USB input (Windows) | Driver not installed or incorrectly installed. | Install or reinstall the correct USB driver from the TOPPING website. Ensure the E70 Velvet is selected as the default playback device in Windows sound settings. |
10. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 7.87 x 5.43 x 1.73 inches |
| Weight | 3.52 Pounds |
| Manufacturer | TOPPING |
| ASIN | B0DNJL3VWQ |
| DAC Chip | AK4499EX |
| USB Interface | XMOS XU316 |
| USB PCM Support | Up to 768kHz/32bit |
| USB DSD Support | Up to DSD512 Native |
| Coaxial/Optical Support | Up to 192kHz/24bit |
| Bluetooth Version | 5.1 |
| Bluetooth Codecs | LDAC, AAC, SBC, aptX, aptX HD |
| THD+N | <0.00006% (A-weighted) |
| Noise Level | As low as 1.3uVrms |
| Output Options | Balanced XLR, Single-ended RCA (simultaneous) |
| Preamplifier Function | Adjustable volume -99dB to 0dB |
| Auto On/Off | Yes, signal detection based |
| 12V Trigger | Yes (IN/OUT) |
11. Warranty and Support
The TOPPING E70 Velvet comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including warranty duration and coverage details.
For technical support, troubleshooting assistance, or warranty claims, please contact TOPPING customer service through their official website or the retailer from whom you purchased the product. You can find more information and contact details on the official TOPPING website: www.topping.audio.
