JWD JWM-115:
It's a good device, with a solid construction. The screen looks great, with a good size, brightness and colors. The handling is very stable, but not as gestural as one would like. 32 volume steps. Very low output impedance (under 1 Ohm) and a fairly flat response. Not much power, approximately 30mW at 16 Ohms. Comparatively speaking, it is more powerful than the RUIZU A50 or the AGPTEK IMP. Suitable for IEMS and low impedance earbuds. Very good device for use with Bluetooth headphones.
The sound is comparable to the Tempotec Variations V1-A.
My output voltage measurements:
No-Load 0.679V
32 Ohms 0.674V
100 Ohms 0.677V
240 Ohms 0.678V
320 Ohms 0.679V