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Lexicon is one of those brand names that’s synonymous with quality. While we’re still seeing new companies entering the digital reverb market, Lexicon have been right at the heart of it since the 1970s, and the company are justly proud of the fact that 80% of platinum records used their digital processing somewhere in the production process.

Lexicon released their first USB audio interface, the Omega, in 2004, and the new Lambda is very similar, though it offers less connectivity. It follows a design blueprint that is now very familiar - an upright box connected via USB - and on the front panel you’ll find mic and line input level controls, an output level control, an instrument input, a headphone output, level/peak ladder LEDs and a simple mix balance control for monitoring the direct sound.

On the back panel there are two balanced line inputs on TRS 1/4¨ jack sockets and two balanced microphone inputs on XLR sockets. Unlike with some interfaces, the inputs don’t use XLR combo jacks and they aren’t switched - you can leave both mic and line sources plugged in at the same time and use the front panel to choose between or even mix them.

You also get a pair of TRS 1/4¨ jacks that function as insert points for the mic signals. These will be useful if you’ve got an analogue compressor that you can’t bear to replace, for example, but many computer musicians probably won’t need them. There are two line outputs on 1/4¨jacks and MIDI I/O is onboard too.

Lambda connects to your computer over USB and is designed to work just as well in a studio environment as it is ‘on the road’ with a laptop. It’s bigger than Digidesign’s Mbox and fatter than Focusrite’s Saffire, but it’s certainly lightweight enough to carry in a rucksack along with your laptop. The only slight problem is that it’s a bit awkward from a shape and size point of view.

Lambda gets all the juice it needs from the USB connection. While it’s true that laptop battery life is always a concern during location recording, the fact that it’s at least possible to record mains-free in remote places is reassuring. More importantly, it means that you have one less power adapter to carry around (or, more importantly, to remember to pack).

Microphone

Even without a PSU, Lambda can still provide 48V phantom power, so you can plug whatever type of microphone you want into it. Microphone gain, however, is extremely disappointing – when Lexicon’s engineers discovered that you have to shout into a microphone with the gain on full in order to make the peak lamps light up, didn’t they realise that these mic amps are nowhere near powerful enough?

Fortunately, the biggest surprise with Lambda is a pleasant one. We’re referring to its sound quality, which is not just a little better than other audio interfaces but substantially better. In fact, the sound is so good that when you first plug Lambda into your monitor speakers, it grabs your attention and makes you do an aural double-take.