Topping DX7 Pro Headphone Amplifier and DAC User Manual

1. Introduction

The Topping DX7 Pro is a high-performance digital-to-analog converter (DAC) and headphone amplifier designed for exceptional audio fidelity. It features an ES9038PRO DAC chip, supports high-resolution audio up to DSD1024 and 32bit/768kHz, and includes Bluetooth 5.0 with LDAC for high-quality wireless streaming. This manual provides essential information for setting up, operating, and maintaining your DX7 Pro.

2. Package Contents

Please verify that all items listed below are included in your package:

Contents included with the Topping DX7 Pro: unit, cables, remote, antenna, and documentation.

The package contents for the Topping DX7 Pro include the main unit, a 6.35mm to 3.5mm connector, a Bluetooth antenna, a remote control, a USB cable, an AC power cable, a user manual, and a warranty card.

Topping DX7 Pro Unit
6.35mm to 3.5mm Connector
Bluetooth Antenna
Remote Control
USB Cable
AC Power Cable
User Manual
Warranty Card

3. Product Overview

3.1 Front Panel

Front panel of the Topping DX7 Pro showing headphone outputs, OLED screen, and control knob.

The front panel of the Topping DX7 Pro features a 6.35mm single-ended headphone output, a 4-pin XLR balanced headphone output, an OLED screen displaying current settings, and a multi-function control knob.

Single-end 6.35mm Output: Standard headphone jack.
4 Pin XLR Balanced Output: For balanced headphones.
OLED Screen: Displays input source, sample rate, volume level, and menu options.
Knob: Multi-function control for volume adjustment, menu navigation, and input selection.
Remote Control Receiver: For infrared remote control commands.

3.2 Rear Panel

Rear panel of the Topping DX7 Pro showing various input and output ports.

The rear panel of the Topping DX7 Pro includes left and right channel analog XLR outputs, left and right channel analog RCA outputs, IIS input, Bluetooth antenna connector, optical input, USB input, coaxial input, AES input, power input, and a power switch with fuse.

Left/Right Channel Analog XLR Output: Balanced audio output for external amplifiers or active speakers.
Left/Right Channel Analog RCA Output: Unbalanced audio output for external amplifiers or active speakers.
IIS Input: For connecting IIS-LVDS compatible sources.
Bluetooth Antenna Connector: For attaching the included Bluetooth antenna.
Optical Input: Digital audio input.
USB Input: For connecting to a computer or other USB audio source.
COAX Input: Coaxial digital audio input.
AES Input: AES/EBU digital audio input.
Power Input: AC power connection.
Power Switch: Main power toggle.
Fuse: Replaceable fuse for power protection.

4. Setup

4.1 Power Connection

Before connecting the power cable, ensure the voltage selector switch on the underside of the unit is set to your local voltage (110V or 220V). Connect the supplied AC power cable to the power input on the rear panel and then to a wall outlet. Use the power switch on the rear panel to turn the unit on or off.

4.2 Input Connections

Connect your audio sources to the appropriate digital inputs on the rear panel (USB, Optical, Coaxial, AES, IIS). For Bluetooth connectivity, screw the provided Bluetooth antenna onto its connector on the rear panel.

4.3 Output Connections

Connect your headphones to either the 6.35mm single-ended or 4-pin XLR balanced output on the front panel. For connecting to external amplifiers or active speakers, use the XLR or RCA analog outputs on the rear panel.

5. Operating Instructions

5.1 Power On/Off

Toggle the power switch on the rear panel to turn the DX7 Pro on or off.

5.2 Input Selection

Rotate the front panel knob to cycle through available input sources (USB, Optical, Coaxial, AES, IIS, Bluetooth). The selected input will be displayed on the OLED screen.

5.3 Volume Control

Rotate the front panel knob to adjust the volume level. The current volume will be shown on the OLED screen. Press the knob to mute/unmute the output.

5.4 Menu Navigation

Press and hold the front panel knob to enter the menu. Rotate the knob to navigate through menu options and press to select. Refer to the detailed user manual for specific menu settings.

5.5 Bluetooth Pairing

Select Bluetooth as the input source. The DX7 Pro will automatically enter pairing mode. On your device (phone, tablet, computer), search for "Topping DX7 Pro" in the Bluetooth settings and select it to pair. The OLED screen will indicate a successful connection.

6. Key Features

6.1 High-Fidelity DAC Performance

Topping DX7 Pro connected to headphones, illustrating its high-fidelity DAC capabilities.

The Topping DX7 Pro is shown connected to headphones, demonstrating its function as a high-fidelity desktop DAC. It utilizes the ESS DAC ES9038PRO chip to accurately restore audio scenes with low distortion.

The DX7 Pro incorporates the ESS ES9038PRO DAC chip, known for its high performance. Through careful design and tuning, it achieves a distortion level of less than 0.00010%, a Dynamic Range (DNR) greater than 126dB, and a Signal-to-Noise Ratio (SNR) greater than 126dB, ensuring accurate and detailed audio reproduction.

6.2 Bluetooth 5.0 with LDAC Support

Topping DX7 Pro displaying Bluetooth input, emphasizing its Bluetooth 5.0 with LDAC feature.

This image shows the Topping DX7 Pro operating in Bluetooth mode, highlighting its Bluetooth 5.0 connectivity with LDAC support for high-definition wireless audio. It uses a CSR8675 chipset for stable and high-quality transmission.

Equipped with a CSR8675 chipset, the DX7 Pro supports Bluetooth 5.0 and various high-quality codecs including LDAC, AAC, SBC, aptX, aptX LL, and aptX HD. This enables high-definition wireless audio transmission up to 24bit/96kHz, providing a convenient and high-quality listening experience. The Bluetooth input can be disabled via the menu if not required.

6.3 Advanced Internal Design

Internal circuit board of the Topping DX7 Pro, highlighting key audio components.

An internal view of the Topping DX7 Pro's circuit board, showcasing components such as 3 ACCUSILICON femtosecond clocks, ES9311+ES9038PRO DAC chip, LME49720 op-amps, Nichicon FW series HiFi capacitance, and TPS7A33/TPS7A47 ultra-low noise linear regulators.

The internal architecture of the DX7 Pro features three ACCUSILICON femtosecond clocks for precise timing, an ES9311+ES9038PRO DAC chip, LME49720 op-amps for low-pass filtering and headphone amplification, Nichicon FW series HiFi capacitors, and TPS7A33/TPS7A47 ultra-low noise linear regulators, all contributing to its audio performance.

7. Specifications

Model Number: DX7 Pro
Product Dimensions: 9.45 x 3.54 x 14.57 inches
Item Weight: 5.33 pounds
Manufacturer: TOPPING
DAC Chip: ESS ES9038PRO
Bluetooth Version: 5.0
Bluetooth Codecs: LDAC, AAC, SBC, aptX, aptX LL, aptX HD
Max Sample Rate (USB): 32bit/768kHz, DSD1024

8. Troubleshooting

No Power: Ensure the AC power cable is securely connected and the rear panel power switch is in the 'On' position. Check the voltage selector switch on the underside of the unit matches your local power supply. Verify the fuse is intact.
No Sound: Check all audio cable connections. Confirm the correct input source is selected on the DX7 Pro. Ensure the volume level is not set to minimum or muted. Verify headphones or external speakers are properly connected and functioning.
Bluetooth Connection Issues: Ensure the Bluetooth antenna is securely attached. Confirm Bluetooth is enabled on your source device and the DX7 Pro is in pairing mode or already paired. Try unpairing and re-pairing the device. Reduce the distance between the DX7 Pro and your Bluetooth device, and remove any obstructions.
Distorted Sound: Check cable integrity and connections. Ensure the sample rate and bit depth settings on your source device are compatible with the DX7 Pro. Try a different audio source or cable to isolate the issue.

9. Maintenance

To ensure the longevity and optimal performance of your Topping DX7 Pro, follow these maintenance guidelines:

Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
Ventilation: Ensure the unit has adequate ventilation. Do not block any ventilation openings.
Environment: Operate the DX7 Pro in a clean, dry environment, away from direct sunlight, excessive heat, moisture, and dust.
Storage: If storing the unit for an extended period, disconnect it from power and store it in a cool, dry place.

10. Official Product Video

This video provides a visual overview of the Topping DX7 Pro, showcasing its front and rear panels, highlighting the various input and output connections, and demonstrating its compact design.

11. Warranty and Support

For detailed warranty information and customer support, please refer to the warranty card included in your package. You may also visit the official Topping website or contact your authorized dealer for assistance.

	Topping D90LE HiFi DAC User Manual Comprehensive user manual for the Topping D90LE HiFi DAC, detailing its features, specifications, operation, and connectivity options for high-fidelity audio.
	TOPPING D90SE Desktop Full Balanced DAC User Manual User manual for the TOPPING D90SE Desktop Full Balanced DAC, detailing its features, specifications, operation, and settings. Includes information on MQA technology and FCC compliance.
	Topping D90LE: High-Fidelity Balanced HiFi DAC with Bluetooth 5.0 Explore the Topping D90LE, a fully balanced HiFi DAC featuring ES9038PRO, Bluetooth 5.0 LDAC, DSD512/PCM768kHz support, and versatile connectivity for superior audio performance.
	TOPPING DX5 DAC Amplifier User Manual Comprehensive user manual for the TOPPING DX5 Balanced DAC and Headphone Amplifier, detailing its features, operation, specifications, and setup.
	Topping DX7 Pro+ User Manual and Specifications Comprehensive user manual and technical specifications for the Topping DX7 Pro+ high-performance balanced DAC and headphone amplifier. Learn about its features, inputs, outputs, and audio capabilities.
	Topping U90 High-Performance USB Audio Bridge User Manual User manual for the Topping U90, a high-performance USB audio bridge with coaxial, optical, AES, and IIS outputs. Learn about its features, connections, and specifications.

Topping DX7 Pro