Little Dot MK III Vacuum Tube headphone Amplifier - Class A Has upgraded upgraded OTK1 tubes that sound fantastic. Will also come with original GE tubes as well. The person I originally got this from said they upgraded the internals some how. They are an electrician and headphone fanatic so I did not question them. I assume the missing screw is from when they upgraded it, but obviously this doesnt affect performance at all. From my usage with several different headphones this amp is great sounding! Nice and wide soundstage with a mostly neutral to warm leaning tone. Very easy to get lost in the music. The OTK1 tubes also sound much clearer and wider to me than the original GE ones. The OTK1 tubes are almost brand new, Ive only put around 30 hours on them. Overall in good cosmetic condition aside from the one faceplate screw. This is a great and affordable way to get into the headphone amplifier space! This thing will blow you away if its your first amp, for sure! Will require a DAC for use.

Little Dot MK III Tube headphone amp / pre-amp in great used condition. No performance or cosmetic flaws. This is a Class A Single-Ended Push-Pull (SEPP) amp which the previous owner upgraded with NOS Soviet driver tubes. It can be used as a headphone amp or as a pre-amp. Comes complete with power cord, user manual, and a Pangea (Audio Advisor) 1/8” headphone male to RCA male Y cable that can be used to connect your mobile device to the Little Dot. The Little Dot MK III is a powerful headphone amp that performs well above its price point. A used Little Dot MK III is one of the few home audio bargains out there today. I’m selling it because I don’t use it very often and would like to pass it on to a fellow enthusiast.