HA400 Headphone Amplifier -4 Channel Metal Stereo Audio Amplifier, Mini Earphone Audio Amplifier with 12V 1A Power Adapter, 1/4 TRS Headphones Output and TRS Audio Input for PC Guitar Studio Stage

The HA400 Headphone Amplifier has received a generally positive reception from users, who appreciate its ability to deliver clear and powerful audio across multiple headphone outputs. Reviewers have highlighted its effectiveness for both casual listening and professional audio applications, identifying it as particularly beneficial for musicians, content creators, and anyone who requires high-quality sound. The amplifier's ability to connect up to four headphones simultaneously allows for shared listening experiences, making it a great addition for home studios and group settings. The sound quality has impressed many users, with reports of clear, distortion-free audio even in challenging environments. The independent volume controls for each channel have been noted for their functionality, allowing adjustment to suit various headphone types. While the HA400 excels in performance, there are some downsides worth mentioning. The device is not portable, as it requires a Constant power source, which can limit its use in certain scenarios. Additionally, several users noted a loud thump when plugging in headphones, which could be irritating for some; thus, it is recommended to follow a specific procedure for plugging in the device to avoid this issue. Lastly, the power cord length has garnered some criticism, with users suggesting that it be extended for better usability in studio environments. Overall, if you're looking for a reliable headphone amplifier that can cater to multiple users at once without sacrificing audio quality, the HA400 is a commendable choice. **