QINPU - A1 A-1 Hi-Fi Audio Mini Integrated Amplifier with Headphone Amplifier Vacuum Tube

I received an email from a chap called James a few weeks ago who suggested it might be a good idea for me to review some headphone amps I thought you know ask not a bad idea so I ordered three from the same store in China via eBay they're all tube headphone amps I'll show you how you put one together first of all because it comes in these separate parts inside the box first off I got the power supply you can see it's multi voltage 100 to 240 volts with a 6 volts 2 amp output and a us-style plug the amp itself it's quite a small device you can see we've got an out and an in on the front a volume control which is kind of stepped it's not as clicky ones you can feel it moving around on the back I'm going to power in and an on/off switch and that's pretty much it pretty simple device there's a tiny bit of assembly required because the tubes are packed separately to protect them during shipp