I've had this keyboard for a week and I'm really liking the Fatar TP/400W keybed. I'm using it with an iPad and the AUM app as my audio mixer and Midi router. I have several different piano sound libraries from various sources. I normally route the keyboard's audio output via a Scarlett 2i4 USB audio interface thru my home stereo system. I use a Yamaha RX-V990 stereo amp with two UltraLinear Audio Systems 600W 15" DJ speakers.
My minor issue occurred when I tried to use the keyboard's headphone jack with my Sony MDR-7506 headphones. There was a minor random clicking noise while playing and then I noticed that multiple random keys were virtually getting stuck in the piano VST but not physically sticking. I was playing Stage D in the Numa Player via AUM when I first noticed this. I went back to playing thru the Scarlett 2i4 and this issue wasn't there. It only occurs when I use the keyboard's headphone jack.
The only thing that I can think that could cause this type of issue would be that the keyboard is powered only thru the USB port and perhaps the headphones are causing a power draw and interfering with the keyboard's power. Everything is being powered from a USB hub and the original iPad 5V 3A power adapter. Oddly enough, the Scarlett 2i4 USB audio interface is powered only thru USB and doesn't have this issue.
My minor issue occurred when I tried to use the keyboard's headphone jack with my Sony MDR-7506 headphones. There was a minor random clicking noise while playing and then I noticed that multiple random keys were virtually getting stuck in the piano VST but not physically sticking. I was playing Stage D in the Numa Player via AUM when I first noticed this. I went back to playing thru the Scarlett 2i4 and this issue wasn't there. It only occurs when I use the keyboard's headphone jack.
The only thing that I can think that could cause this type of issue would be that the keyboard is powered only thru the USB port and perhaps the headphones are causing a power draw and interfering with the keyboard's power. Everything is being powered from a USB hub and the original iPad 5V 3A power adapter. Oddly enough, the Scarlett 2i4 USB audio interface is powered only thru USB and doesn't have this issue.