DIY Kit Treble & Bass Two-Way Audio Frequency Adjustable HiFi Speakers for Car & Home Audio Filter: Amazon.com: Industrial & Scientific
TDA2030A Audio Amplifier Board Module DIY Kit for Arduino Components OCL 18W x 2 BTL 36W|kit for arduino|kit diykit kits - AliExpress
Project | Homebuilt Hi-Fi - A user submitted image showcase of high quality home built hi-fi components. | Diy audio projects, Speaker box design, Diy speakers
Looking for a VOX 80 DIY Components Pack? - SoundImports