The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi enthusiasts today.

Zappa put two distinct setups to the test to see if listeners could truly tell the difference between tube amps and their digital counterparts ...

Tech Audio Quad's beautiful amp looks like it's straight out of a 70s sci-fi movie The Quad 3 blends retro looks and cutting-edge audio tech to beautiful effect Comments (0) ...

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I’ve you ever gone to bed drifting off wishing you had an analogue-ready portable amp for some of the best wired headphones, your sweatiest sound dreams have come true.

Headphone brand Écoute has launched a pair of headphones with a vacuum tube and amplification built-in. The headphones are £652 / $799 / AU$1,303.

Battery life does seem to have taken a hit thanks to the vacuum tube, with an AirPods Max like 20 hours of staying power. You can listen wired over a USB-C cable for high-res 32bit/384kHz audio.

What you’ll learn: The K2-W vacuum-tube op amp has an LTspice-simulated open loop gain of 27,000. The modeled K2-W input impedance is >100 MΩ. The LTspice modeled result shows 1.00 nA of input ...