audio

This article introduces how to identify the malfunctioning part of a failed amplifier and how to repair it, and reports on the actual repair! A DENON PMA-390II, which is said to be a masterpiece, was sold at a junk store at a low price because one of the sound was not coming out, so I immediately bought it and repaired it.

Introducing a self-made digital amplifier using Tripath's TA2020-20 IC. Introduction of examples including circuit diagrams, sound quality of capacitors such as Black Gate, and examples of modifications to prevent pop noise.

Explanations of how to open a capsule and replace a dead battery. Genuine brand battery is ICR17280, but I used FUJITSU CR2C battery. It worked!

A HiFi DAC is easily obtained using a Raspberry Pi. There are a lot of Raspberry Pi DACs. So I report the result of my research on Raspberry Pi DACs.

HiFi audio for Raspberry Pi Zero W. I will introduce my review of MINIBOSS I2S DAC and modification methods for high sound quality.