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 ...

As a result of my most recent Touchstone Semiconductor blog post last month and exchanges with the “Guru of Grounding” (a.k.a, Bill Whitlock of Jensen Transformers – thank you, Bill), it got me ...

Priced at $950, the two-channel Parasound Halo P 5 isn't your average preamplifier, in that it has a feature set beyond a handful of analog inputs. Nice aesthetic, good price; is it for you? Input ...

Monoprice’s Desktop Headphone Amplifier delivers high performance, rich features, and high value for the demanding audio enthusiast. It might be disappearing from smartphones, but plenty of home and ...

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 ...

Danish manufacturer Copland has released a top-of-the-range integrated amplifier in its latest CSA series. The new CSA 150 is a hybrid design, using a double triode gain stage (6922) with MOS-FET ...

Pro-Ject Audio Systems has expanded its home audio line with the high-end X8 turntable and two new phono stages, the Phono Box SB3 and the Phono Box DS3B. Both Phono Box models have electronics that ...