TOPPING Professional manufactures high-fidelity USB audio interfaces and studio equipment, bringing ultra-low distortion and professional performance to musicians and creators.
TOPPING Professional is the pro-audio division of the renowned high-fidelity audio manufacturer TOPPING. Building on years of expertise in referencing-grade audio decoding and amplification, TOPPING Professional is dedicated to designing high-performance tools for recording, mixing, and content creation. Their product lineup includes advanced USB audio interfaces like the E1x2, E2x2, and E4x4 series, as well as portable solutions like the M62 and TPP series.
Distinguished by their use of ultra-linear microphone preamplifiers and proprietary NFCA (Nested Feedback Composite Amplifier) headphone technology, TOPPING Professional devices offer pristine signal clarity, exceptional dynamic range, and ultra-low latency. Whether for home studios, live streaming, or mobile recording, TOPPING Professional aims to provide accurate, transparent sound capture and monitoring solutions compatible with major DAWs across Windows, Mac, iOS, and Android platforms.
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Check your speaker connections and volume settings. Ensure the interface is selected as the output device in your operating system and DAW. Also, verify that the 'Monitor' knob is turned up.
This is often caused by buffer size issues. Increase the buffer size (latency) in your audio driver settings or DAW preferences. If on Windows, ensure you are using the official TOPPING Professional ASIO driver.
A flashing power indicator typically signifies the device is in standby mode. This happens if the automatic standby function is enabled and no signal is detected for a period of time. It will wake automatically when a signal is detected.
Press and hold the specific 48V button (refer to your manual, commonly IN1) while powering on the device to enter setup mode, then press it again to toggle between PC and Mobile modes before powering off to save.
Try a different USB port and ensure you are using the provided USB cable. If using a USB hub, try connecting directly to the computer. For mobile devices, ensure OTG support is enabled on the phone.