Topping E1x2 OTG

Topping E1x2 OTG

• Audio interface for streamers & creators
• Exclusive OTG for dual-device streaming (PC/mobile)
• Hi-Fi ultra-low noise preamp, pure sound
• Powerful headphone amp drives pro headphones
• Zero-latency hardware monitoring for precise recording/streaming

NT$5,900

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Topping E1x2 OTG｜Hi-Fi Grade USB Audio Interface Supporting Dual-Device Livestreaming

Designed for Mobile Livestreaming and Dual-Device Streaming, a Hi-Fi Heritage Recording Core

The Topping E1x2 OTG is a single-channel USB audio interface designed for modern creators. It not only inherits Topping's self-developed ultra-linear microphone preamplifier and NFCA-LE headphone amplifier module but also incorporates innovative OTG functionality, supporting recording resolutions up to 24-bit/192kHz. It perfectly combines Topping's cutting-edge technology in the Hi-Fi audio field with the convenience of mobile livestreaming, offering music producers, streamers, and podcast creators unprecedented pure sound quality and connection flexibility.

Compared to traditional audio interfaces, the Topping E1x2 OTG achieves simultaneous high-quality livestreaming from computers and mobile phones through its dedicated OTG port and built-in LoopBack function, completely simplifying complex cross-platform content creation setups. Its core remains Hi-Fi grade hardware specifications, ensuring zero-latency monitoring and uncolored, reference-grade sound quality for both recording and streaming.

Quick Facts

Brand: Topping
Model: E1x2 OTG
Simultaneous I/O: 1 x 2
A/D Resolution: 24-bit / 192kHz
Mic Preamps: 1 Ultra-Linear Preamplifier (-130.5dBu EIN)
Headphone Output Power: 580mW x 2 @ 32Ω
Applicable Scenarios: Mobile livestreaming, dual-device streaming, home recording, podcast recording, guitar/bass recording

使用者建議分析(點此展開)

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適合誰購買

Content creators who need to connect both a computer and a mobile phone for livestreaming or recording simultaneously.
Hi-Fi audio enthusiasts with extremely high demands for sound quality, hoping to bring audiophile-grade sound into recording and livestreaming.
Music producers who need powerful headphone drive to power high-impedance monitoring headphones (e.g., DT770 Pro).
Podcast or voiceover creators seeking extremely low self-noise and pure, transparent sound.

誰不適合購買

Bands or multi-person podcasts that require more than one input for multi-track simultaneous recording.
Users seeking a large ecosystem of built-in DSP effects and software plugins (this unit focuses on pure hardware performance).
Users with absolutely no need for mobile livestreaming or connecting external digital devices (the standard E1x2 version can be chosen).

Topping E1x2 OTG Core Technologies and Features

Dual-Device OTG Livestreaming: Features OTG functionality designed for mobile devices, allowing simultaneous connection to computers and mobile phones for high-quality synchronized livestreaming and recording, making it a powerful tool for modern content creators.
Ultra-Linear Mic Preamps: Equipped with Topping's self-developed preamplifier circuit, providing an astonishing -130.5dBu EIN noise level, ensuring ultimate purity of the audio source, capturing the most subtle dynamics for both vocals and instruments.
NFCA-LE Headphone Amplifier: Built-in NFCA-LE headphone amplifier module derived from the Hi-Fi domain, featuring ultra-low self-noise of only 0.9uVrms and 1 Ohm output impedance, capable of outputting a powerful 580mW x 2 (@32Ω), easily driving 600Ω high-impedance professional monitoring headphones.
LNRD Low Noise Power Module: Utilizes Topping's exclusive LNRD (Low Noise Reference Driver) module, providing reference-grade stable and pure power to the AD/DA chips, fully unleashing the chip's performance potential and ensuring audio conversion accuracy.
Zero-Latency Hardware Monitoring and Mixing: Built-in powerful hardware DSP mixer, including multiple DAW channels and LoopBack virtual channels, allowing for zero-latency real-time monitoring and precise volume control during recording or livestreaming.
Analog Volume Control: Both Line Out and headphone outputs use analog potentiometers for volume control, offering a more precise and smooth adjustment feel compared to digital volume control, and fully preserving a dynamic range of up to 132dB.

Ultra-Linear Mic Preamps (Ultra-Linear Mic Preamp)

Designed for pure audio amplification, providing industry-leading ultra-low noise performance of -130.5dBu EIN.
Provides +48V Phantom Power, perfectly supporting condenser microphones and traditional dynamic microphones.
Extremely low Total Harmonic Distortion (THD+N <0.0003%), ensuring uncolored and faithful reproduction of the audio signal.

NFCA-LE High-Performance Headphone Amplifier

Output power up to 580mW x 2 @ 32Ω, providing powerful driving capability.
Features two-stage Gain adjustment, with a maximum output of +17dBu, easily meeting the needs of various headphones on the market, from high-sensitivity IEMs to high-impedance monitoring headphones.
Self-noise floor of only 0.9uVrms, ensuring no hiss even with high-sensitivity headphones.

Zero-Latency Hardware Monitoring and Mix Control

Built-in DSP provides true hardware real-time monitoring, with no annoying latency during recording.
Provides independent mix control software for precise adjustment of volume balance across input, DAW, and LoopBack channels.
The LoopBack function can mix internal computer audio with microphone sound, making it ideal for livestreaming, online teaching, and gaming.

Triple USB-C Connector Design (with OTG)

PC/Data Connector: For connecting to a computer for data transfer and primary power supply.
OTG Connector: Designed specifically for connecting mobile phones or tablets, enabling high-quality mobile livestreaming and recording.
Power Connector: Provides additional auxiliary power when connecting mobile phones or underpowered devices, ensuring stable operation.

Technical Specifications (Tech Specs)

Form Factor	Desktop
Simultaneous I/O	1 x 2
A/D Resolution	Up to 24-bit / 192kHz
Mic Preamps	1 Topping Ultra-Linear Preamplifier
Phantom Power	+48V
Analog Inputs	1 x XLR-1/4" TRS Combo (Mic/Instrument/Line)
Analog Outputs	2 x 1/4" TRS (Balanced)
Headphone Output	1 x 1/4" TRS (NFCA-LE Module)
Computer Connection	1 x USB-C
Other Connectors	1 x USB-C (OTG), 1 x USB-C (Power Only)
Operating System (PC)	Windows 10 / 11 (ASIO driver required)
Operating System (Mac)	macOS 10.15 or later (Plug and Play)
Mobile App Compatibility	iOS and Android devices with OTG functionality
Power Source	USB Bus Powered / 5V DC External Power

Pros & Notes (Click to expand)

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Pros

Hi-Fi Grade Sound Quality: Inherits Topping's audiophile-grade ultra-linear preamplifier and NFCA-LE headphone amplifier technology.
Powerful Mobile Livestreaming Functionality: Dedicated OTG connector and LoopBack simplify dual-device streaming setup.
Top-tier Headphone Driving Power: Powerful 580mW x 2 output, easily driving high-impedance professional monitoring headphones.
Extremely Pure Signal Path: LNRD low-noise power module ensures AD/DA conversion accuracy.

Notes to Know

Only provides a single input channel, not suitable for multi-instrument or multi-vocal simultaneous recording.
Requires an external 5V power supply to stably drive mobile phone OTG functionality.
Focuses on pure sound quality, no built-in DSP effects (e.g., Reverb, EQ).

Topping E1x2 OTG FAQ

Q：What is the difference between Topping E1x2 OTG and the standard E1x2?

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A：The main difference is that the E1x2 OTG version adds a dedicated OTG port for connecting to mobile phones, making it more suitable for users who need to record on a computer and livestream on a mobile phone simultaneously.

Q：Is the headphone output power of the E1x2 OTG really better than other audio interfaces?

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A：Yes. Its built-in NFCA-LE headphone amplifier module is derived from Topping's Hi-Fi headphone amplifier technology, providing a powerful 580mW x 2 output, which can easily drive most high-impedance professional monitoring headphones on the market.

Q：Is the E1x2 OTG suitable for guitar or bass recording?

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A：Yes. The E1x2 OTG's Combo Jack input supports Line/Instrument level switching, allowing direct connection of high-impedance electric guitars or basses for recording without the need for an additional DI Box.

Q：I am a streamer, is the Topping E1x2 OTG worth buying?

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A：Absolutely. If you need to simultaneously play background music from your computer and livestream with high quality using your mobile phone, the E1x2 OTG's dual-device connectivity will greatly simplify your setup and significantly improve audio quality.

THINK2 Warranty & Support

Service Highlights

Fast Shipping: In-stock items will be shipped within 24 business hours.
Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.

※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.

Warranty & Return Policy

With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.

THINK2 — Authorized Audio Gear Dealer in Taiwan