1. Introduction
The Topping E30 II is a high-performance Digital-to-Analog Converter (DAC) and preamplifier designed for superior audio reproduction. Featuring dual AK4493S DAC chips, XMOS XU208 USB interface, and versatile input options, it delivers exceptional sound quality for various audio setups. This manual provides detailed instructions for setting up, operating, and maintaining your E30 II to ensure optimal performance.

Figure 1: Topping E30 II DAC Preamp Audio Decoder with its remote control.
2. Package Contents
Before proceeding with the setup, please verify that all items are present in the package:
- E30 II Unit (x1)
- DC Cable (x1)
- USB Cable (x1)
- Remote Control (x1)
- User Manual (x1)
- Warranty Card (x1)

Figure 2: Detailed view of the package contents, including the E30 II unit, cables, remote, and documentation.
Video 1: Unboxing the Topping E30 II DAC, showing the contents and initial setup.
3. Setup
3.1 Power Supply
The E30 II operates on a DC 5V power supply. It can be powered via a PC's USB port, a mobile phone charger, or a power bank. A built-in protection circuit safeguards the unit from incorrect power connections.

Figure 3: The E30 II powered by a standard 5V USB power adapter, highlighting its versatile power options.
3.2 Connecting Audio Sources
The E30 II offers multiple input options for connecting various audio sources:
- USB Input: Connect your PC, MAC, Linux, iOS, or Android device using the provided USB cable. Windows 10/11 users may not require additional driver installation.
- Coaxial Input: Supports up to 24bit/192kHz audio, suitable for digital turntables, disk players, set-top boxes, and game consoles.
- Optical (TOSLINK) Input: Also supports up to 24bit/192kHz audio, ideal for similar digital audio sources.

Figure 4: Rear panel connections of the E30 II, detailing the coaxial, optical, and USB input ports.
3.3 Connecting Audio Output
Connect the E30 II to your amplifier or active speakers using the RCA outputs.

Figure 5: A diagram illustrating the rear panel connections, including the RCA outputs (R ch, L ch) for audio output.
4. Operating Instructions
4.1 Power On/Off and Input Selection
The E30 II can be powered on by pressing the power button on the front panel or using the remote control. Use the 'SEL' button on the unit or the input selection buttons on the remote to switch between USB, Coaxial, and Optical inputs.
Video 2: Demonstrating the power-on sequence and how to switch input channels on the E30 II.
4.2 Pure DAC & DAC+Preamp Application
The E30 II can function as a pure DAC, fixing its output to the maximum level for direct connection to an amplifier. Alternatively, it can operate as a DAC+Preamp, allowing volume control from -99dB to 0dB via the remote control, enabling direct connection to power amplifiers or active speakers.

Figure 6: Illustration of the E30 II's versatility, showing its use as a pure DAC and as a DAC with preamplifier functionality.
4.3 DAC Filter Modes
The E30 II offers 6 filter modes for PCM decoding and 2 filter modes for DSD decoding, allowing subtle adjustments to the sound characteristics. These can be accessed and changed via the setup menu.

Figure 7: The display showing DAC filter mode settings, which can be adjusted for different audio preferences.
4.4 Automatic On/Off Function
The E30 II features an auto on/off function. It will automatically turn on when a valid signal is detected. If no valid signal is received for 1 minute, the E30 II will automatically turn off.
5. Maintenance
To ensure the longevity and optimal performance of your Topping E30 II, follow these maintenance guidelines:
- Keep the unit clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or aerosols.
- Ensure proper ventilation around the unit to prevent overheating.
- Avoid exposing the unit to extreme temperatures, humidity, or direct sunlight.
- Disconnect the power supply before cleaning or if the unit will be unused for an extended period.
6. Troubleshooting
This section addresses common issues you might encounter with your Topping E30 II. For more detailed troubleshooting, refer to the official user manual PDF or contact customer support.
| Phenomenon | Solution |
|---|---|
| Noisy playback |
|
| One channel with noise/no output |
|
| Channel imbalance |
|
| The connected USB device does not recognize this unit |
|
| Remote control not responding |
|
Video 3: A guide to troubleshooting common issues with the Topping E30 II DAC.
7. Specifications
Below are the detailed technical specifications for the Topping E30 II DAC Preamp Audio Decoder:
| Parameter | Value |
|---|---|
| DAC Chip | 2x AK4493S |
| USB Input (PCM) | 44.1kHz-768kHz / 16bit-32bit |
| USB Input (DSD Native) | DSD64-DSD512 |
| USB Input (DSD DoP) | DSD64-DSD256 |
| Coaxial/Optical Input | 44.1kHz-192kHz / 16bit-24bit |
| THD+N @ 1kHz (A-wt) | <0.00015% |
| THD @ 90kBw (No-wt) | <0.00060% @ 20-20kHz |
| SNR @A-wt | 123dB @ 1kHz |
| Dynamic Range @A-wt | 123dB @ 1kHz |
| Frequency Response | 20Hz-20kHz (±0.3dB), 20Hz-40kHz (±0.8dB) |
| Output Level | 2.1Vrms @0dBFS |
| Noise @A-wt | <1.5uVrms |
| Channel Crosstalk @1kHz | -132dB |
| Channel Balance | <0.3dB |
| Output Impedance | 20Ω |
Note: The above data is the result of tests conducted in TOPPING laboratory.

Figure 8: A comparison of key specifications between the E30 II and its predecessor, the E30, highlighting improvements.

Figure 9: The XMOS XU208 chip, responsible for USB audio processing, and its broad compatibility with various operating systems.
8. Warranty and Support
Topping products typically come with a manufacturer's warranty. Please refer to the included Warranty Card for specific terms and conditions regarding your E30 II. For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact HIFI College, the seller, directly.
- Seller: HIFI College
- Warranty Period: More than 1 year (as per seller information)
- Support: 24/7 availability for questions.
You can also find additional resources and support on the official Topping website or through authorized distributors.
For the official user manual in PDF format, you can refer to: Topping E30 II User Manual PDF







