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 ...

In a balanced op-amp circuit, the op-amp inputs see equal impedances looking into the circuit. Balanced circuits provide better performance by cancelling some input errors and have a simple R F /R I ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Back in my college days when PortaPaks were all the rage, one of the most helpful and practical ...

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 ...