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TOPPING PROFESSIONAL E1X2 OTG
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Topping E1x2 OTG Audio Interface USB 1 In 2 Out 24bit 192kHz
With the E1x2, Topping offers an excellent audio interface designed for musicians and audio professionals. This great interface offers a very high level of performance for perfectly transparent recording and playback.
Topping E1x2: Direct mobile connection
All you need is a USB OTG cable to connect a smartphone directly for live streaming, with lossless sound transmission.
The interface requires an external power supply when used with an OTG smartphone.
Topping E1x2: Mobile livestream with PC synchronization
You can connect the interface to a PC when you're using it for a live stream via your smartphone. By using a DAW to optimize the voice, you can enhance the sound quality of your live stream.
Topping E1x2 : Livestream mobile double
It's also possible to connect another smartphone to play an accompaniment or audio file while the first smartphone is live-streaming. What's more, you can even use this function to launch two live streams.
Topping E1x2: Ultra-linear microphone preamp module
The E1x2 OTG features a microphone preamplifier module developed by Topping Professional with a noise figure of just -130.5dBu. Even at maximum volume, the E1x2 OTG can maintain a very low level of background noise, ensuring perfectly detailed recording. This architecture ensures that the audio signal is accurately transmitted for transparent sound.
Topping E1x2: Direct connection for condenser microphones
Equipped with 48V phantom power, the E1x2 OTG is perfectly compatible with condenser and dynamic microphones.
Topping E1x2: Low-noise voltage module
Topping's unique LNRD module provides an extremely stable power supply for the AD/DA chip, enabling it to develop its full potential for pure audio transmission.
Topping E1x2: High-performance headphone amplifier
With a noise floor of just 1uVrms and an output impedance of 1 Ohm, the NFCA-LE headphone amplifier module lets you use sensitive headphones without suffering from distortion or noise.
Topping E1x2: Adjustable gain
The E1x2 OTG offers two levels of gain, high gain up to +17dBu and high output power with 2x580mW at 32 Ohm. The combination of this high gain and power allows the E1x2 OTG to easily accompany high-impedance headphones, up to 600 Ohm.
Topping E1x2: Zero-latency hardware monitoring system
The zero-latency design lets you monitor your audio effects in real time, while recording or mixing.
Topping E1x2: Analog volume control
The volume control knobs on the line output and headphone amplifier use an analog potentiometer, allowing more precise volume control.
Topping E1x2: Independent mixers
Equipped with four 12-channel input mixers, the E1x2 OTG allows easy adjustment and control of audio effects. What's more, its 8 DAW channels and 46 LoopBack channels are designed to adapt to different recording, mixing and playback needs.
Topping E1x2 : High audio resolution
The Topping Professional E1x2 OTG adopts an excellent USB XMOS interface, compatible with Windows, Mac, iOS and Android operating systems in particular. It supports high-resolution audio streams for recording and playback, up to PCM 24bit 192kHz.
Topping E1x2: Three USB-C ports
The Topping Professional E1x2 OTG uses USB-C connectivity for data transmission and power supply. We recommend connecting the auxiliary power connector if the E1x2 OTG is used in conjunction with a desktop computer, or if 48V phantom power is required, to avoid interference. An external power supply is also recommended when the sound card is used with a smartphone.
Interface & Connectors
| 1 | Activate / Deactivate direct monitoring |
| 2 | Input gain knob |
| 3 | Input level vumeter |
| 4 | Output levels vumeters |
| 5 | Line out level knob |
| 6 | Mix monitoring level adjustment |
| 7 | Headphone output volume control |
| 8 | instrument / micro / line level device input |
| 9 | Instrument / line in switch |
| 10 | 48V phantom power supply switch |
| 11 | Headphone amplifier gain switch |
| 12 | Headphone output |
| 13 | Power button |
| 14 | 5VDC power connector |
| 15 | USB-C connector (PC) |
| 16 | USB-C OTG connector (mobile) |
| 17 | Line out |
Topping E1x2 : Dimensions
Topping E1x2 : Package
Topping Professional audio interface comparison
| E1x2 OTG | E2x2 | E4x4 Pre | |
|---|---|---|---|
| OTG interface | Yes | No | No |
| Power supply | USB-C | USB-C | USB-C |
| Interface type | USB 2.0 | USB 2.0 | USB 2.0 |
| Monitoring | Yes (adjustable mix ratio) | Yes (adjustable mix ratio) | Yes (adjustable mix ratio) |
| Input level indicator | 1 set of LED | 2 set of LED | 4 set of LED |
| Output level indicator | 2 set of LED | 2 set of LED | 4 set of LED |
| Mic preamp module | Ultra-linear | Ultra-linear | Ultra-linear |
| Headphone amp | NFCA-LE | NFCA-LE | NFCA-LE |
| Supported sampling rates | USB-C : PCM up to 24bit 192kHz OTG : PCM up to 24bit 48kHz | PCM up to 24bit 192kHz | PCM up to 24bit 192kHz |
| Control software | Yes | Yes | Yes |
| Supported OS | Mac, Windows, iOS, Android | Mac, Windows, iOS, Android | Mac, Windows, iOS, Android |
| Power button | Yes | Yes | Yes |
| Weight | 415g | 530g | 830g |
| Mix channels | 4 | 3 | 4 |
| DAW channels | 8 | 6 | 8 |
| Loopback channels | 6 | 4 | 6 |
Technical characteristics
| Specifications | |
|---|---|
| Product type | USB audio interface |
| USB protocol | USB 2.0 (HS) OTG USB 2.0 (FS) |
| Mic input | 1x XLR / Jack 6.35mm combo connector |
| Instruments input | 1x XLR / Jack 6.35mm combo connector |
| Line out | 2x Jack 6.35mm |
| Headphone out | 1x Jack 6.35mm |
| Direct zero-latency monitoring | Yes (with mix button) |
| Input vumeter | Yes (1x8 LED indicator) |
| Output vumeter | Yes (1x8 LED indicator) |
| Mic preamp module | Ultra-linear |
| Headphone amp module | NFCA-LE |
| Supported sampling rate | PCM up to 24bit 192kHz OTG : PCM up to 24bit 48kHz |
| Control software | Yes (Topping Professional Control) |
| DAW channels | 8x |
| Supported OS | Mac, Windows, iOS, Android |
| Mic input measurements (@ 24bit 96kHz) | |
|---|---|
| Input noise | -130.5dBu @ A-wt, 150Ω |
| THD+N | -110dB (0.0003%) @ A-wt |
| Dynamic range | 118dB @ A-wt |
| SNR | 118dB |
| Crosstalk | / |
| Frequency response | 20Hz - 40kHz (±0.2dB) |
| Max input level | 8.6dBu |
| Input impedance | 1.5kΩ |
| Available gain | 58dB + 20dB (20db digital gain) |
| Phantom power supply | 48V XLR connector |
| Line input measurements (@ 24bit 96kHz) | |
|---|---|
| THD+N | -107dB (0.00045%) @ A-wt |
| Dynamic range | 118dB @ A-wt |
| SNR | 118dB |
| Crosstalk | / |
| Frequency response | 20Hz - 40kHz (±0.1dB) |
| Max input level | 23.9dBu |
| Input impedance | 9kΩ |
| Available gain | 58dB + 20dB (20db digital gain) |
| Connector | Jack 6.35mm TRS |
| Mesures entrée instruments (@ 24bit 96kHz) | |
|---|---|
| THD+N | -108dB (0.0004%) @ A-wt |
| Dynamic range | 118dB @ A-wt |
| SNR | 118dB |
| Crosstalk | / |
| Frequency response | 20Hz - 40kHz (±0.3dB) |
| Max input level | 14.8dBu |
| Input impedance | 1MΩ |
| Available gain | 58dB + 20dB (20db digital gain) |
| Connector | Jack 6.35mm TS |
| Mesures sorties ligne (@ 24bit 96kHz) | |
|---|---|
| THD+N | -100dB (0.001%) @ A-wt |
| Dynamic range | 115dB @ A-wt |
| Dynamic range analogique | 127dB @ A-wt, -40dB atténuation |
| SNR | 115dB @ A-wt |
| Crosstalk | -128dB @ 1kHz |
| Frequency response | 20Hz - 40kHz (±0.3dB) |
| Max input level | 14dBu |
| Bruit | 1.8uVrms @ A-wt |
| output impedance | 100Ω |
| Connector | Jack 6.35mm TRS balanced |
| Headphone output measurements (@ 24bit 96kHz) | |
|---|---|
| THD+N | -100dB (0.001%) @ A-wt |
| Dynamic range | 115dB @ A-wt |
| Analog dynamic range | 132dB @ A-wt, -40dB atténuation |
| SNR | 115dB @ A-wt |
| Crosstalk | -120dB @ 1kHz |
| Frequency response | 20Hz - 40kHz (±0.3dB) |
| Max input level | 0dBu @ Gain = L 17dBu @ Gain = H |
| Noise | 1uVrms @ A-wt |
| Output impedance | 1Ω |
| Connector | Jack 6.35mm TRS stereo |
| Headphone output power | 2x580W @ 32Ω, THD+N < 1% 2x380W @ 64Ω, THD+N < 1% 2x198W @ 150Ω, THD+N < 1% 2x105W @ 300Ω, THD+N < 1% 2x55W @ 600Ω, THD+N < 1% |
| General | |
|---|---|
| Power supply | 5VDC 0.8A via USB-C |
| Dimensions | 14.5 x 12.9 x 5cm |
| Weight | 415g |
| Color | Black |
| Input | Jack 6.35mm |
| Input | USB |
| Input | XLR |
| Output | Jack 6.35mm |
| Max sampling rate | 192kHz |
| Color | Black |
| Interface chip | XMOS XU308 |
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