Kingrex Headquarters Headphone Amp Plus line out pre-amp.

I bought this amp new and have used it on my desk top for a few years. It sounds smooth and articulate. I have really enjoyed. It has been reviewed extensively and there is lots of info about Kingrex and the Kingrex HQ on the internet. I have replaced it with a Centrance Dacmini which is why I am selling it. The Kingrex sounds as good or better than the Dacmini. This unit has some scratches on the top and the face plate that are to small to show on the photos. For this reason I have priced it lower then normal. It will ship in the original box. It has been well cared for. It sounds great. I pay the shipping and the paypal fees. Specifications: Input Impendence: 15k Ohm Output Impendence: 1.8 Ohm Gain : 18.5dB Frequency Response: 20Hz(-0.7dB) ~ 80KHz(+0.1dB) Output power (@1% THD+N) 100mW at 300ohm 170mw at 150 ohm 360mW at 60ohm 570m W at 30 ohm THD + N : 0.005% at 2Vrms Output Dynamic Range: 110dB Channel Separation : >92dB at 1Khz >76dB at 10Khz Signal to Noise Ratio: 115dB Construction is excellent. All screws unscrew/rescrew in nicely, all panels slide back in place easily, and there are no burs or dings on any edge or surface. The two units are of good weight, the control unit being about 2lbs and the power supply unit about double. Both units have foam feet on the bottom. The volume control knob is smooth and heavy. The resistant is just enough that you’d have to give a lot of power to your twist to turn it up to ear bleeding levels on accident. The power switch in the back is solid.