NAMM 2025: It's been 50 years since the Roland JC-120 Jazz Chorus guitar amp was released and won an army of fans thanks to its legendary clean tone. So what better time for Roland to unleash a ...

[Vasily Ivanenko] has been designing a power supply for a clean jazz guitar amplifier, and has helpfully documented the process. For a guitar amplifier which prides itself on clean tones ...