Intense homemade audio setup! Visited one my dad's lifelong friend's house. He's a retired electrical engineer who built this custom listening environment in his basement. As an aspiring electrical engineer, this was
Amazon.com: K1 Live Sound Card HiFi Homemade Sound Effect Audio Mixer Board for Live Streaming Music Recording Singing Bluetooth Wireless Accompaniment Sound Card : Electronics
Audio Infuser 4700 - How to build an handmade hifi system
Mezzo Galactica_copy.pdf - Humble Homemade Hifi
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Amazon.com: K1 Live Sound Card HiFi Homemade Sound Effect Audio Mixer Board for Live Streaming Music Recording Singing Bluetooth Wireless Accompaniment Sound Card : Electronics