DIY KIT Laboratory Power Supply M178.1 Kit Power regulator 3kW AC-220V K216.2-3 Kit (1 terminal block) Voltage stabilizer adjustable 5-27 VDC/20A K212.2 Kit Light effect “Heart – running fire” K203.1 Kit Light effect “Pulsating Heart” K204.1 Kit LED VU meter audio level indicator K138 KIT Stereo equalizer 5-band K266 Kit Headphone amplifier on NE5532 K275 KIT HiFi audio amplifier 1×14 W - TDA2030 K151 Kit