Review on 🎧 Hifi Portable Headphone Amplifier with 3.5mm Stereo Audio Out, Switch and Dual-Output - Powered by Lithium Battery and 2-Level Boost by Todd Stovall

As another reviewer said, don't be fooled by the packaging - a plain white box that says "Enjoy HD shock !" (Obviously the same box is used for HDMI Audio Extractor, HDMI 1x2 Splitter, HDMI 1x3 Splitter, HDMI 3x1 Splitter, etc. But inside you'll soon find a polished, matte black aluminum body with lots of bells and whistles. The connectors include the more typical ones Microphone input and speaker output (6-300 ohms), solid full-range volume control with on/off switch and red LED, second LED to indicate USB input power, which lights up red/blue (charging/fully charged) on the back together with the USB -Charging port (no, they make it clear that USB is for power only, not for computer input/output signals.) And they've thought through too There's a high/low 6dB gain switch, a decent length cable, a short jack built-in cable with 90 degree bends, and even another long TRS cable with a straight end. The questions asked are also surprisingly comprehensive, even including the specs: 350 mW, 32 Ω load, 0.0003 percent, less than 120 dB signal-to-noise ratio, 20-20 kHz frequency response +/- 3 dB, 2000 mAh lithium Battery, 3, 7B) . And yes, if you're picky about Chinese products, I acknowledge (and relish) this quote below their warnings: There is a battery in the product, do not open it privately. lol. Regardless, the headphone amp works great!