Hi-fi amplifiers

If you like the warm sounds that only valves can offer, then you'll love this premium integrated amplifier from Unison Research

The Yamaha A-S300 stereo amplifier is a budget star, but you can buy better

The Primare I32 is a beautiful product, with top-quality materials and a lovely feel but does it deliver?

Leema's latest incarnation of its Pulse series is a strong performer, but we're not wild about the looks and the competition is vicious

Packing a traditional valve alongside up-to-the-minute digital technology, this stereo amplifier and dock will suit most digital-based systems

Marantz's Pearl Lite is an amplifier with potential. It's not the last word in sonic ability, but it's affordable, stylish and controlled

Best stereo amplifier up to £500, Awards 2010. Yamaha has produced a new class leader, with a stunningly capable product

If you like your listening full-throttle, then this NAD amplifier is for you, but those who take things easier may find the C356BEE a touch taxing

Best stereo amp £1500+, Awards 2012. It's had a re-design, but Roksan's Caspian M2 is still a formidable amplifier, and we like this latest version

Although this South Korean company isn't as well known as it could be, it's proving more than able, with top notch products like the Ai500