In this paper, the concept and design of the terahertz (THz) vacuum electronic amplifier (VEA) integrated on a chip is proposed. The THz VEA is driven by chip-scale cold cathodes and a cascade ...

More worryingly for WiiM, the Stereo 70s contrasts the AMP Ultra as sounding thinner and tonally greyer when playing Was (Not Was)’s “Wheel Me Out”; and the Marantz soounds less strident in the upper ...

The MTI100 Sun Records Limited Edition turntable comes with a Sumiko Olympia Moving Magnet cartridge and two vacuum tubes.

McIntosh’s MTI100 isn’t your average turntable — it’s better, more beautiful, more versatile and definitely more expensive. Released in early 2019, the MTI100 is unique because it’s integrated with a ...

Integrated tube amp promises a warmer, more inviting sound Hybrid ANC, LDAC and USB-C for higher-res audio $799 (about £652 / AU$1,303) We've seen small vacuum tubes in headphone amps with the ...

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. When it comes to listening on the best ...

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.

A new class of compact and lightweight S-band 1 kW traveling-wave tube (TWT) is being developed for a microwave power module (MPM) that will be used for phased antenna array radar applications. The ...

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 current.