By audiophile standard, the best Hi-Fi in the world is a reference sine wave generator. Real audiophiles should listen to nothing but the 2 kHz oscillator Jim Williams built before his death in 2011 for testing a 18-bit ADC. It only plays a single tone, but they can enjoy the sound of that 0.00031% Total Harmonic Distortion! https://www.analog.com/media/en/technical-documentation/technical-articles/ubm_edn_20110811%2018bit%20adcs%20ad%20free.pdf #electronics
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