TOPPING Professional E1x2 OTG Professional SB Audio Interface User Manual

TOPPING Professional E1x2 OTG Professional SB Audio Interface

Contents list

Contents list

• E1x2 OTG X 1
• Type A to Type C cable X 1
• Type C to Type C cable X 1
• 6.35 mm to 3.5 mm adaptor X 1
• Quick Start Guide X 1

Attribute

Parts and names

Front panel

1. IN
   For connecting microphone, instrument (e.g., guitar) or line-level device. It can be used with both XLR and 6.35mm (balanced or unbalanced) phone plugs. Microphone will normally be connected using XLR plug. Instrument should be connected via 6.35mm TS plug, and line-level device should be connected via 6.35mm TRS plug.

2. INST
   Instrument/Line input switch for analog in which alter gain and input impedance to suit either instrument or line level signals. Line in when the button light is off; instrument in when the button light is on.

3. 48V
   48V phantom power switch for mic inputs. When light is on, E1x2 OTG enables 48V phantom power at XLR socket.
   CAUTION:

   • Phantom power is only required for condenser microphones and may damage the connected equipment that does not require it. Therefore, turn phantom power off when it is not required. Make sure if your microphone needs the 48V phantom power before turning it on.
   • Set all volume levels to minimum before turning phantom power on or off.

4. Input gain knob
   Adjust the gain level of microphone, instrument or line input. Rotate counterclockwise to reduce the gain level and clockwise to increase the gain level. Watch the input meter while adjusting gain and reduce the gain level when CLIP light is on.

5. MON
   Press and light up the MON button to enable direct monitoring, which routes the channel’s input signal directly to the left and right channels of the headphone output, so that you can monitor your input signals without any latency.

6. LED Meters
   IN1 is the input meter and OUT1&2 side are the output meters.
   If your signal is hitting CLIP (top red LED), which means it is clipping, reduce the signal level.

7. Power indicator

   • Solid light: Working state
   • Light off: Power off status
   • Breathing light: Standby state
   • When the automatic standby function is on, if power signal is detected while no USB signal, OTG signal and Analog signal are present, the power indicator will flash and E1x2 OTG will enter standby state after one minute. Once having detected valid USB signal, it will automatically return to working state.
     *Automatic standby setting is in the of TOPPING Professional Control Center.

8. OTG indicator

   • Solid light: OTG port has connected device.
   • Light off: No device is connected to the OTG port.

9. Input monitor mix
   After pressing and lighting up the MON button, use this to adjust the balance between the live input signals and playback streams from your computer. Rotating counterclockwise will increase the level of the input signal relative to the playback stream; Rotating clockwise will increase the level of playback stream relative to the input signal.
   This knob does not affect the recording level of input signals.

10. Headphone volume control
    For adjusting headphone volume level. Rotate counterclockwise to decrease the volume and clockwise to increase the volume.

11. 6.35mm headphone output jack
    Connect your headphone here.

12. GAIN
    Headphone amp gain setting. Low gain when the button light is off; high gain when the button light is on.

13. MONITOR
    This knob affects the level sent out of LINE OUT to your monitors. Rotate counterclockwise to decrease the volume and clockwise to increase the volume .

14. LINE OUT
    6.35mm TRS balanced jacks. For connecting to active speakers or amplifier.

15. 0TG
    Connect a mobile device here. For recording audio from your mobile device onto your computer or sending the audio to your mobile device.

16. USB-C
    Connect the E1x2 OTG to a computer via the provided USB cable. This connection also powers the E1x2 OTG depending on the power supply of your USB port.

17. POWER
    Connect to a DC5V power supply if your USB port can’t provide enough power, especially when you connect a mobile phone/a tablet. Then, the USB-C port beside it is no longer used for power input, only for data transmission.

18. Power switch

Factory reset
Press and hold the MON button at the top left corner while powering on the device until all meter indicators light up, and the factory settings can be restored.

Connection

Make sure to set all volume levels to minimum before connecting or disconnecting the external device. Otherwise, high-volume output may damage your hearing or equipment.

USB mode setting
You could connect PC or mobile device to USB-C port. Please set to PC mode/Mobile mode based on the connected device.
Press and hold the 48V button on the front panel while powering on the device to enter the setup.
Press 48V button again to switch modes. 8 lights on is PC mode; 4 lights on is mobile mode. Power off and reboot to save setting.

TOPPING Professional Control Center

Please download the reference guide of TOPPING Professional Control Center from https://www.topping.pro/downloads/TOPPING Professional Control Reference Guide.pd/.

Audio Set-up in your DAW
E1x2 OTG is compatible with any DAWs that supports Core Audio on Mac or ASIO on Windows.
You need to ensure that E1x2 OTG is selected as the ASIO driver (Windows) or Core Audio driver (Mac) in the DAW’s preferences/playback settings. If you are not sure where these options can be found, please refer to your DAW’s user guide.

Trouble shooting

No power

1. Check if the rear panel power switch is in the ON position.
2. It may be caused by insufficient power supply, please try to connect DCSV power supply to the power input.
3. Confirm if the USB cable is broken or damaged, replace the USB cable with a new one. Use a USB cable no longer than 2 meters.
4. Try with other USB ports of your computer.
5. Check if the problem is on the computer. Try with another one.

Playback sound cannot be heard

1. Check the speaker connections and the volume settings on the speakers.
2. Adjust the E1x2 OTG Line output and headphone amp output volume.
3. Check the settings on the ToppingPro.
4. Connect E1x2 OTG and your computer directly without using a USB hub.
5. Remove the USB devices which are connected with your computer and not in use, and then confirm the sound.
6. Quit all applications you are not using then confirm the sound.

Recorded audio is too loud, too quiet or silent

1. Adjust the E1x2 OTG input gain level.
2. When using the condenser mic which needs 48V phantom power, turn phantom power on.
3. Check the settings on the ToppingPro.

Sound breaks up

1. Set the buffer size (latency) in the audio application that you are using or in Topping Pro to a larger value (Windows only).
2. Check if the problem is on the computer. Try with another one.

The sound of the device connected to the input jack is distorted
Watch the input meter and reduce the input gain level if clipping indicator is on.

Cannot play or record

1. Confirm that E1x2 OTG is set for input and output in the software that you are using.
2. Confirm that the E1x2 OTG is connected to the computer correctly.
3. Quit all the software that is using the E1x2 OTG, and unplug and re-plug the USB cable connected to the E1x2 OTG.

The mobile phone dose not recognize this unit

1. Some phones require OTG function to be enabled first.
2. The USB cable needs to support OTG function.
3. It may be caused by insufficient power supply, please try to connect DC5V power supply to POWER port.
4. IF the phone is connected to USB-C port, set the unit to mobile mode.

Precautions

1. Do not keep the unit in a hot, humid environment or hit the unit strongly.
2. Opening the case instantly voids the warranty!
3. Indoor use only.
4. Topping accepts no liability for any loss or damage arising directly or indirectly from the failure of E1x2 OTG.
5. For improvement purpose, specifications subject to changes without prior notice.

Specifications (@24bits/96kHz)

Microphone Input

Line Input

Instrument Input

Line Output

Headphone Output

OTG Output (@OTG 24bits/48kHz <-> TypeC 24bits/44.1 kHz-192kHz)

*Note: The above data is the result of the test in TOPPING laboratory.

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