semi_guy

He doesn't know what he is talking about! He complains that MacBook Pro has a poor performing DAC that converts all those digital bits into an analog signal. No audio producer is going to directly plug in a recording system, mixing board, or mic input to the analog audio output of any computer. These under $2 DACs are 100-110 dB SNR. They are not bad, but they are not great, just good enough. First, computers have a lot of inherent noise with those chargers banging away, then processors running at hight speed with a lot of ground noise, added with LCD displays, etc. In summary, Laptops are inherently noisy. Second, an audio expert, would keep its music digital and connect to a pro-audio interface for final analog recording. But who converts their digital audio into an analog recording these days? This digital audio is transcoded into different sample rates and bit widths at the end product to maintain the most resolution of the audio signal. Third, at his age and exposure to loud noises from his many concerts, his hearing has the high probability of being damaged. Some people claim he wears a hearing aid. By the way, today's best hearing aids only operate for speech, (bandwidth of 4KHz), not the full audio spectrum. It is hard to amplify frequencies that are so damaged you can't hear them at any volume.

Best calculator for engineers. I have used it on my Mac and iPhones for decades, My favorite features are its large library of constants, doing unit conversions, hex calculations,  ability to move buttons to my need, and RPN support.