Amazon has shut down live audio service Amp about 18 months after it launched in beta. After live audio gained traction as a digital category during Covid, led by Clubhouse and imitators launched by ...

I am contemplating replacing the JRC 4558 op-amps inside. These things must be cheap as hell because I have 4 amplifiers, all with JRC 4558's.<BR><BR>I was looking at replacing the JRC's with TL072's ...

Towards the end of 2009, my roommate and I purchased a stereo audio amplifier that was originally built in the 1970’s. Several months after the purchase, however, the amplifier stopped working. Using ...