The TPA3118 class D amplifier IC is a leap in terms of audio quality....
Extruder Fan for Creality 3D Ender-3.
Thermistor/sensor for the nozzle on Ender-3
Creality 3D T-nut for Z axis threaded rod.
The Wanhao Duplicator D9 MK I is the perfect entry level, large 3D Printer. With an impressive print surface of 300x300x400 mm you have a printer that can manage large prints. The D6 has a heated build plate which makes larger prints much safer and easier, it also helps more demanding materials stick to the build plate.