Topping E4x4 Pre Audio Interface

TOPPING E4X4 Pre - Professional USB Audio Interface | 4-Channel Ultra-Linear Preamp & Flagship Headphone Amp Recording Interface

The TOPPING E4X4 Pre is a Professional USB Audio Interface designed specifically for music producers, recording engineers, and content creators seeking the ultimate in sound quality. This device embodies TOPPING's years of technical expertise in the audio field, featuring four self-developed Ultra-Linear Microphone Preamps. It provides an Equivalent Input Noise (EIN) as low as -130.5dBu, ensuring that the purest, uncolored sound details are captured when recording vocals or instruments. Whether using dynamic microphones or condenser microphones requiring 48V phantom power, the E4X4 Pre provides ample and clean gain to meet the high standards of professional recording studios.

Beyond its exceptional recording input capabilities, the E4X4 Pre features a built-in powerful NFCA-LE High-Power Headphone Amplifier Module. This technology breaks through the bottleneck of insufficient headphone output power found in traditional recording interfaces, providing up to 580mW x 2 (32Ω) of output power. It features two-stage gain adjustment with a maximum gain of +17dBu. This means it can easily drive professional monitoring headphones with impedances up to 600 ohms, while maintaining an ultra-low noise floor of just 0.9uVrms and an ultra-low output impedance of 1 ohm. This ensures you hear the most precise, distortion-free sound feedback during Zero-Latency Monitoring and mixing tasks.

To adapt to modern, diverse creative environments, the TOPPING E4X4 Pre utilizes advanced LNRD (Low Noise Reference Driver) circuit design to effectively filter USB power noise, ensuring stable high performance whether connected to PC, Mac, iOS, or Android devices. Paired with its dedicated control software, users can flexibly manage 12 input channels, 8 DAW channels, and 6 Loopback channels. It perfectly supports High-Resolution Recording and live streaming applications, serving as the central hub of your professional audio system.

Core Advantages & Application Scenarios

Self-Developed Ultra-Linear Microphone Preamp
The E4X4 Pre is equipped with four high-performance Ultra-Linear Microphone Preamp modules. Their circuit design has been precisely optimized to achieve an astounding -130.5dBu Equivalent Input Noise (EIN). Even when gain is turned to the maximum, background noise remains virtually inaudible. This extreme signal-to-noise ratio makes it particularly suitable for recording vocals, acoustic guitars, or orchestral instruments with wide dynamic ranges, ensuring recording material is clean and transparent, leaving maximum room for post-production processing.

NFCA-LE Flagship Headphone Amplifier Engine
Adopting the NFCA-LE module derived from TOPPING's high-end headphone amplifiers, it features 0.9uVrms Ultra-Low Noise and 1Ω Ultra-Low Output Impedance. Whether using highly sensitive In-Ear Monitors (IEMs) or high-impedance open-back headphones, the E4X4 Pre provides ample driving power and perfect control, completely eliminating issues with insufficient volume or background hiss.

LNRD Low Noise Reference Driver Power Technology
USB power is often accompanied by power supply noise, affecting sound purity. The E4X4 Pre uses exclusive LNRD circuitry to deeply filter and stabilize the USB 5V power, providing a battery-like pure reference voltage for the internal ADC/DAC chips. This allows the unit to achieve a Dynamic Range (DNR) of 115dB, significantly reducing Total Harmonic Distortion and delivering sound quality that surpasses products in its class.

Professional Mixing Control & Loopback Function
Through the dedicated Control Center software, users can intuitively manage complex signal routing. The system provides up to 12 mixing input channels and 6 Loopback channels. This is crucial for game streaming, podcast production, or online teaching, allowing you to easily mix background music from the computer with microphone vocals for output, without relying on cumbersome third-party software settings.

Full Platform High-Resolution Compatibility
Supports mainstream operating systems including Windows, Mac, iOS, and Android, featuring a dual USB Type-C interface design (separate data transmission/auxiliary power). It supports high-resolution recording and playback up to 192kHz/24bit. Whether connecting to a workstation in the studio or a tablet for mobile creation on the go, the E4X4 Pre offers plug-and-play convenience and a stable, professional audio processing solution.

Detailed Features & Included Software

Technical Specifications (Tech Specs)

• Product Model: TOPPING E4X4 Pre Professional USB Audio Interface
• Number of Preamps: 4 (Ultra-Linear Microphone Preamp Modules)
• Equivalent Input Noise (EIN): -130.5dBu (A-weighted)
• Frequency Response: 20Hz - 20kHz (±0.1dB)
• Supported Sample Rates: 44.1kHz / 48kHz / 88.2kHz / 96kHz / 176.4kHz / 192kHz (24bit)
• ADC / DAC Dynamic Range: 115dB (Typical)
• Headphone Output Power: 580mW x 2 @ 32Ω / 380mW x 2 @ 64Ω / 195mW x 2 @ 150Ω / 105mW x 2 @ 300Ω / 55mW x 2 @ 600Ω
• Headphone Output Impedance: 1Ω
• Headphone Output Noise: < 0.9uVrms (Low Gain), < 2.4uVrms (High Gain)
• Max Gain Setting: High Gain up to +17dBu
• Input Interfaces: 4 x XLR/TRS Combo Jacks (Supports Mic/Line/Instrument)
• Output Interfaces: 4 x 6.35mm TRS Balanced Outputs, 2 x 6.35mm Headphone Outputs
• USB Interfaces: 1 x USB Type-C (Data/Power), 1 x USB Type-C (Aux Power)
• Software Channels: 12 Input Mix Channels, 8 DAW Channels, 6 Loopback Channels
• Compatible Systems: Windows 10/11, macOS, iOS, Android
• Power Requirements: USB Power (Auxiliary power recommended when using 48V or connecting mobile devices)