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Thanks for Clicking through - The Unity Lisson Grove Tube Compressor is a classic piece of outboard gear with that vintage British sound. To purchase this product click here for a list of our dealers or any of the links above for details of our other Unity products.

The Lisson Grove - AR-1 Tube Compressor

Lisson Grove

The Lisson Grove AR-1 is a vintage style tube compressor based on the classic Altec compressor that was used extensively in the '60's.

However, the AR-1 has a few improvements on the original. Some in the circuitry and some functional. The unit is hand built from top to bottom in the UK, with the best quality components to the highest possible standards.

The Lisson Grove AR-1 has been built with a love for the sound of a bygone era. We hope you recognize that very familiar British sound.

AR-1 Features
Attack Time: 15ms to 130ms

Pull pot switch to bypass the compression; it is not a hard bypass, and you retain the the classic tube sound of the unit without the compression.

Release Time: 320mS 500mS 800mS 1.25S 2.3S

O/P Load: This pot adjusts the output impedance of the unit, going from 600 ohms in the far right position, to 200 ohms ( Dark ) in the far left position. We put this on our unit as the original Altec had a fixed output of 200 ohms. But we felt that was too dark for some uses so this control makes it possible to have a variable tone without adding anything to incongruous to the circuit.

The 'Infinity' control: In between each of the 6 release settings is the Infinity position which is, in effect, an extremely long recovery time. There are a variety of uses for this feature, a useful one being the ability to 'prime' the unit before a take. This is done by placing the compressor in a 'Infinity' position ( one click up or down from the desired setting ), having the artist play or sing a note before recording, then switching in the desired release time once things were under way.

Yet another use of 'Infinity' would be to prevent an increase in gain during silent passages. We have also added a quarter inch jack on the back, to enable a footswitch control, for hands free control of infinity operation.

Balance: This provides an easy way to balance the two sides of the gain reduction valve, thus minimizing distortion and feed-through thumps. When you press the push-button, it is a simple matter to adjust a small trim control until the pulsing sound is heard at its lowest level. This is a very practical for balancing out the gain reduction valve.

User Quotes: "I love the Lisson Grove AR-1 . It's rare to find a new compressor that has the bounce and character of a 'classic' vintage unit but also the reliability of a new one. I have found it to be a very musical tool for mixing but also a great creative tool when I'm after something more adventurous.. the perfect thing to turn to for bringing life and edge to sounds. It cooks!" Nigel Godrich - Engineer/Producer. Credits include: Radio Head, Beck, REM, Air, Zero 7, Paul McCartney

"Today I put the AR-1 on the vocal, yesterday I put it on the acoustic and the day before I put it on the bass. If i'm gonna spend good money on a compressor it can't be a one trick pony. There's a few ponies running around in this baby." Michael Brauer - Producer Credits include: Bob Dylan, Rolling Stones, Coldplay, The Vaccines, Shakira, Doves

"I first heard the lisson grove AR-1 at my buddy Gus Seyffert's studio. He bought his years ago directly from Hugo Nicholson. Gus and I worked on a session at his place and I was really impressed with the sound of the unit on a variety of things. I think they really shine on bass and both electric and acoustic guitars. It was recommended to me to buy two units so I could use them across my mix bus and I am glad I listened because although a little goes a long way on the mix bus it really sounds amazing. The impedance control is really handy and last but not least these things distort in a really pleasing way." Patrick Carney, Drummer, The Black Keys

Recommended Retail: $2995. Minimum Advertised Price $2850



AR-1 Lisson Grove Manual







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