The single op-amp differential amplifier shown in Figure 1 is often used as an audio balanced line receiver. Obtaining high common-mode rejection is a critical requirement that requires four ...

Back in my college days when PortaPaks were all the rage, one of the most helpful and practical resources I relied on was the "The Spaghetti City Video Manual: A Guide to Use, Repair and Maintenance," ...

Hardcore audiophiles are generally immune to sticker shock for high-end audio gear like $50,000 speaker-based rigs. But now you can get the same level of sound for a lot less if you build a sound ...