This is an audio A/B selector with gain control. The project uses op-amps and resistors to smoothly switch between microphone and line inputs.

Abstract: This paper describes the design of a front-end circuit consisting of an integrated preamplifier with a Sallen-Key Butterworth filter for very-high-frequency ultrasonic transducers and a ...

Most interestingly, the Coda W is KEF’s first active speaker system to feature a built-in phono preamplifier (compatible with ...

Now the legendary British audio manufacturer is continuing its hot streak by revealing a new flagship range of hi-fi ...

Made from cutting-edge composites, these flagship full-range speakers encapsulate all that has made Wilson Audio the go-to ...

The Qutest uses the same DAC architecture, software and frequency-shaping filters as the Award-winning Hugo 2 but ditches the headphone amplifier and rechargeable battery.

Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...

The Elvis Turntable features a CNC-machined plinth integrated with red LEDs that spell out the singer’s name in all caps.

If you are trying to set up the best possible home theater system, you may come across many new terms that you have never heard of. One such term is Preamplifier (preamp). First in the list is this ...

Many hi-fi enthusiasts agree that vinyl offers a unique sound that stands apart from digital audio sources. In a popular Elektor article in 2016, we presented a high-end phono preamplifier that ...

Looking to buy a great record player to listen to vinyl? I've tested the best turntables from Rega, Audio-Technica, Pro-Ject and more.