For sale is a Niimbus US4+ headphone amplifier, there are some comestic imperfections but the sound is absolutely amazing. In fact, I found this to be the best sounding unit out of quite a few Niimbus amps I’ve owned in the past, including a US5 Pro, which supposedly has the same internal circuitry. The scratches on the rear place are due to me trying to connect a spade ground cable to the screw. Comes with all original packaging and accessories, price includes shipping

Thanks for looking!