Pre/Power Amplifiers

Balanced Audio Technology, otherwise known as BAT, doesn’t beat about the bush when it comes to its audio philosophy. The main page on the US manufacturer’s website lists core principles, all of which have an engineering bent: ‘balanced is best’, ‘dual-mono construction maximises performance’, and ‘zero global feedback achieves natural sound’. All three of these are at play in the company’s VK-90 preamp.

Are you the hands-on type who finds most power amps a bit boring because all they have is an on/off switch? Manley Laboratories’ Neo-Classic SE/PP 300B monoblock (£13,699 per pair) is the opposite: it lets you fine-tune the sound by fine-tuning the applied feedback.

As the EISA Awards jury noted this year [HFN Oct ’24], AV furniture is ‘often overlooked… but has a crucial part to play’. Monitor Audio would agree, and having acquired Blok in 2019, it has launched a redesigned Stax 2G system this summer. Retaining its predecessor’s wooden box-like supports and full-width shelves, the improved modular form-factor promises to be easier to configure and assemble.

Debuted at the UK Hi-Fi Show Live 24, Audio Research’s new flagship monoblocks are not quite its most powerful ever, but are the first to feature the mighty KT170 output tubes

The latest arrival from US high-end brand Audio Research Corp., the Reference 330M monoblock amplifier (£92,000 per pair) may not quite be the most powerful amp the company has ever built, but by any standards a rated output of 330W – into 4ohm or 8ohm speaker loads – is going some for an amplifier using tube technology. Indeed, it will come as something of an eye-opener for those still subscribing to the belief that for the purity of the valve sound – or whatever else you consider to be the sonic traits of the genre – you must settle for low output power, and start looking for speakers of appropriately high sensitivity.

Long anticipated, Constellation’s series two amplifiers witness the transition from huge linear supplies to custom switchmode PSUs. Weight is slashed, and performance boosted

Californian amplifier specialist Constellation Audio isn’t one to regularly refresh its product catalogue, so when – after years of maintaining the same models – it begins a complete overhaul of its entire range, audiophile ears prick up. First to hit the market are the new Inspiration 2 and Revelation 2 series, with the latter’s stereo pre/power system being debuted at the UK Hi-Fi Show Live 2024. These will be followed by the Performance 2 and Reference 2, with the lineup then topped off by the flagship Statement amps first ‘teased’ in 2023 at the Munich High End show.

The mini/micro system craze was one of the Japanese electronics industry’s last great flourishes of the 1970s. Aiwa joined with Technics, Toshiba (Aurex) and Mitsubishi in producing tiny equipment with the same (or better) performance than many full-sized units, the contention being that improved component miniaturisation meant large boxes were no longer needed.

Based in Berlin, German company MBL is perhaps still best known for its omni-directional Radialstrahler loudspeakers [HFN Jun ’21], spreading their output over 360o in the cause of creating sound that fills a room. The idea isn’t new – the design was first launched at IFA in Berlin in 1979, in the times when audio was a major focus of that show – but it has been developed and refined over almost five decades, and is still a mainstay of the company’s lineup.