The output level from the HXL is low.
Please check that the volume control on your phone/tablet/computer is up and at a good level; 75% should be a good level. Also try adjusting the volume on the HXL as well.
Support Type: HXL Portable Balanced Headphone Amplifier and DAC Presale|Frequently Asked Questions
My HXL is connected as shown, but there is no music output.
Verify that one of the included cables is completely plugged into the HXL and your source device. Also, verify that the 3.5mm/4.4mm headphone outputs are firmly plugged in. Try disconnecting and reconnecting both the USB-C and 3.5mm/4.4mm cable. You will see an LED light confirming the HXL is getting power and is connected to an […]
Will HXL work with lower impedance headphones such as my Beyerdynamic DT-990 and Hifiman HE500?
HXL can easily drive wired headphones with impedances of 10 ohms or higher.