Amplifiers

The famous 845 power triode began life as a radio transmitting vacuum tube, with a physically huge anode dissipation of 75 watts and an anode voltage of 1,250V. Because the thoriated tungsten filament – which shined like a lightbulb – was powered at 10 Volts and 3.25 Amps, any transmitter running a large number of […]

This would have been great if NAD had built a tube amplifier. It shared a lot of DNA with the ubiquitous 3020, having been designed by Peter Bath (who worked for Dolby, AR, and even NAD), and built by IEEE in Taipei (who used to build Cambridge Audio, Luxman, Proton, and NAD devices). While the

Despite being the company’s best-selling and possibly most-loved legacy product, few audiophiles in the United Kingdom paid attention to the launch of the Audio Research SP9 in 1987. It was a powerful – and technically creative – preamplifier that appealed to a British audience that was enamored with other trends at the time. If we’re

Creek has long been the king of low-cost British integrated amplifiers. The CAS4040, for example, is a delightful listen and one of the nicest things any wannabe audiophile could afford back in the day. It featured a rich, gripping sound that was detailed and melodic, and it delivered a lot of bang for your buck.

This monstrous integrated amplifier, which cost £3,499 when it was first released a decade ago, was a Sugden A21a on steroids. The IA-4 set out to provide that crystalline Class A sound to a larger audience, with significantly increased power and additional features. The biggest difference between it and its smaller A21a S2 sibling was

Sony CEO Akio Morita travelled to the United States in the early 1960s in an attempt to persuade Americans to listen to little transistor radios, as he relates in his brilliant autobiography Made In Japan. The consumer electronics business in the United States was initially skeptical that anyone would want to listen to something smaller

This Tellurium Q power amplifier, another example of a great British hi-fi ‘what-if,’ debuted on the scene in 2012, promising so much. This newish British startup isn’t prone to exaggeration; rather, the excitement sprang from the fact that it was designed by Colin Wonfor, formerly of Inca Tech and one of the industry’s many eccentric

Quad’s Vena features a totally new, high-quality Class AB amplifier with a strong 45W RMS per channel on the inside (quoted). It features a Cirrus Logic CS4398 DAC, which is also used in Quad’s Platinum series CD players, as well as aptX Bluetooth connectivity, making it ideal for users who have music stored on their

Rogers was one of the most well-known hi-fi brands in the United Kingdom in the 1970s. Originally created in 1947 by Jim Rogers to produce speakers such as the Theatrical Horn Loudspeaker, the company later gained the license to manufacture BBC monitors and sold tens of thousands of LS3/5as, LS 5/1s, and L 5/9s, the

We’ve seen a quiet revolution in stereo amplifier design over the last few years, as we’ve seen a shift from one style of creating power amplifiers to another. In the grand scale of things, the delayed transition from Class AB to Class D functioning is noteworthy for a variety of reasons – probably on par