LS1v2

A good monitor combines a high degree of accuracy with untrammeled musicality. There aren’t many of those around – common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.

By integrating top quality digital signal processing, converters and amplifiers in one of the speakers’ legs, we were able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.

“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”

True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.

Looking at the design, the box is much wider than it is deep, the small (14 litres) sealed box is designed to provide an effective baffle down to around 250Hz. It is suspended between two half cylinders that combat diffractions and function as an integral two-legged floor stand. An 8” magnesium woofer and a 1” dome tweeter divide the work between them. Smart use of DSP via a Computer Aided Calibration process during production linearizes the frequency response  and allows for a controlled bass response down to 35 Hz.
 
Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA, the same clock circuit as our CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.

I won't get my monitoring better than this. Mastering party all day, every day!

Frederik DeJongh, Jerboa Mastering, Gent (LS1)

Grimm Audio Loudspeakers

2014-03-05T16:04:12+00:00

Frederik DeJongh, Jerboa Mastering, Gent (LS1)

I won't get my monitoring better than this. Mastering party all day, every day!

https://www.grimmaudio.com/testimonials/frederik-dejongh-jerboa-mastering-gent-ls1/

These dmf subs are insane! It took me 30 seconds to decide I had to buy them. Authoritative, open, tight, life-like, in one word: wow!

Wessel Oltheten, Spoor 14, Boxtel (LS1s-dmf)

Grimm Audio Loudspeakers

2018-11-29T16:04:28+00:00

Wessel Oltheten, Spoor 14, Boxtel (LS1s-dmf)

These dmf subs are insane! It took me 30 seconds to decide I had to buy them. Authoritative, open, tight, life-like, in one word: wow!

https://www.grimmaudio.com/testimonials/wessel-oltheten-spoor-14-boxtel-ls1s-dmf/

I've played everything from Rammstein to chamber music on these speakers, and they eat everything raw.

Roy Ervin Solstad, Stereo+, Oslo (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:04:41+00:00

Roy Ervin Solstad, Stereo+, Oslo (LS1)

I've played everything from Rammstein to chamber music on these speakers, and they eat everything raw.

https://www.grimmaudio.com/testimonials/roy-ervin-solstad-stereo-oslo-ls1/

You must hear that! Absolutely!

Fritz Fey, Studio Magazin, Oberhausen (LS1be)

Grimm Audio Loudspeakers

2018-11-29T16:04:54+00:00

Fritz Fey, Studio Magazin, Oberhausen (LS1be)

You must hear that! Absolutely!

https://www.grimmaudio.com/testimonials/fritz-fey-studio-magazin-oberhausen-ls1be/

Total peace of mind

Henk & Marja, 6Moons (LS1be)

Grimm Audio Loudspeakers

2018-11-29T16:05:05+00:00

Henk & Marja, 6Moons (LS1be)

Total peace of mind

https://www.grimmaudio.com/testimonials/marja-vanderloo-henk-boot-6moons-ls1be/

A second Grammy: your technology helped me get there...

Al Pryor, Mack Avenue Records, New York (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:05:16+00:00

Al Pryor, Mack Avenue Records, New York (LS1)

A second Grammy: your technology helped me get there...

https://www.grimmaudio.com/testimonials/al-pryor-mack-avenue-records-new-york-ls1/

Just recorded Mahler 1 with Filharmonie and Edo de Waart. We had the Grimm LS1's on trial. Never heard so much in a recording, really impressive.

Steven Maes, Motor Music, Mechelen (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:05:28+00:00

Steven Maes, Motor Music, Mechelen (LS1)

Just recorded Mahler 1 with Filharmonie and Edo de Waart. We had the Grimm LS1's on trial. Never heard so much in a recording, really impressive.

https://www.grimmaudio.com/testimonials/steven-maes-motor-music-mechelen-ls1/

This is probably the most 'correct' loudspeaker I've ever laid ears on. The combined honesty, neutrality and pleasing musicality is at a level that I haven't come across before.

Christian Rechenbach, EinsNull magazin, Duisburg (LS1)

Grimm Audio Loudspeakers

2011-12-24T16:05:42+00:00

Christian Rechenbach, EinsNull magazin, Duisburg (LS1)

This is probably the most 'correct' loudspeaker I've ever laid ears on. The combined honesty, neutrality and pleasing musicality is at a level that I haven't come across before.

https://www.grimmaudio.com/testimonials/christian-rechenbach-einsnull-magazin-duisburg-ls1/

I want to congratulate you for making the best sounding, most phase linear, transient accurate, and all around beautiful speaker system on the planet

Thaddeus Moore, Liquid Mastering, Eugene (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:05:56+00:00

Thaddeus Moore, Liquid Mastering, Eugene (LS1)

I want to congratulate you for making the best sounding, most phase linear, transient accurate, and all around beautiful speaker system on the planet

https://www.grimmaudio.com/testimonials/thaddeus-moore-liquid-mastering-eugene-ls1/

I have already made better, faster decisions in my mixes, and have had more confidence in delivering my masters.

Thaddeus Moore, Liquid Mastering, Eugene (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:06:16+00:00

Thaddeus Moore, Liquid Mastering, Eugene (LS1)

I have already made better, faster decisions in my mixes, and have had more confidence in delivering my masters.

https://www.grimmaudio.com/testimonials/thaddeus-moore-liquid-mastering-eugene-ls1-2/

Truly a remarkable system, the equal or better of anything I've ever heard.

Dave Collins, Dave Collins Mastering, Los Angeles (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:06:42+00:00

Dave Collins, Dave Collins Mastering, Los Angeles (LS1)

Truly a remarkable system, the equal or better of anything I've ever heard.

https://www.grimmaudio.com/testimonials/dave-collins-dave-collins-mastering-los-angeles-ls1/

You have to work hard on the LS1's to get a good sounding mix, but once you have it, you can be sure it really is a good mix.

Wessel Oltheten, Pro Audio & Video magazine, Buren (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:07:03+00:00

Wessel Oltheten, Pro Audio & Video magazine, Buren (LS1)

You have to work hard on the LS1's to get a good sounding mix, but once you have it, you can be sure it really is a good mix.

https://www.grimmaudio.com/testimonials/wessel-oltheten-pro-audio-video-magazine-buren-ls1/

The LS1's frequency response is unusually flat - indeed the flattest we've ever measured.

Keith Howard, Hi-Fi News, Croydon (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:07:17+00:00

Keith Howard, Hi-Fi News, Croydon (LS1)

The LS1's frequency response is unusually flat - indeed the flattest we've ever measured.

https://www.grimmaudio.com/testimonials/keith-howard-hi-fi-news-croydon-ls1/

After all these years I finally have a standard on which I can rely.

Al Pryor, Mack Avenue records, Hempstead (LS1)

Grimm Audio Loudspeakers

2011-12-16T16:07:41+00:00

Al Pryor, Mack Avenue records, Hempstead (LS1)

After all these years I finally have a standard on which I can rely.

https://www.grimmaudio.com/testimonials/al-pryor-mack-avenue-records-hempstead-ls1/

This is the most exciting, strange, beautiful, ridiculously convenient piece of non-audiophile audiophile gear I have seen or heard. These things are a bit science fiction really.

Bogdan Roscic, President Sony Classical, Berlin (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:07:57+00:00

Bogdan Roscic, President Sony Classical, Berlin (LS1)

This is the most exciting, strange, beautiful, ridiculously convenient piece of non-audiophile audiophile gear I have seen or heard. These things are a bit science fiction really.

https://www.grimmaudio.com/testimonials/bogdan-roscic-president-sony-classical-berlin-ls1/

My audition of the LS1 was a transformative experience.

George Massenburg, McGill University, Montreal (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:08:10+00:00

George Massenburg, McGill University, Montreal (LS1)

My audition of the LS1 was a transformative experience.

https://www.grimmaudio.com/testimonials/george-massenburg-mcgill-university-montreal-ls1/

What impressed me the most is the purity of the sound and the sound field in general. (...) You can work so fast now to get the sound right!

Stefan Riel, Echo Beach, Kuala Lumpur (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:08:22+00:00

Stefan Riel, Echo Beach, Kuala Lumpur (LS1)

What impressed me the most is the purity of the sound and the sound field in general. (...) You can work so fast now to get the sound right!

https://www.grimmaudio.com/testimonials/stefan-riel-echo-beach-kuala-lumpur-ls1/

One for all and everything.

Fritz Fey, Studio Magazin, Oberhausen (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:08:37+00:00

Fritz Fey, Studio Magazin, Oberhausen (LS1)

One for all and everything.

https://www.grimmaudio.com/testimonials/fritz-fey-studio-magazin-oberhausen-ls1/

Not something good, but something already exquisite has further been improved.

Fritz Fey, Studio Magazin, Oberhausen (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:09:01+00:00

Fritz Fey, Studio Magazin, Oberhausen (LS1)

Not something good, but something already exquisite has further been improved.

https://www.grimmaudio.com/testimonials/fritz-fey-studio-magazin-oberhausen-ls1-2/

I could not be more impressed.

George Massenburg, McGill University, Montreal (LS1)

Grimm Audio Loudspeakers

2012-10-17T16:09:14+00:00

George Massenburg, McGill University, Montreal (LS1)

I could not be more impressed.

https://www.grimmaudio.com/testimonials/george-massenburg-mcgill-university-montreal-ls1-2/

I heard the LS1 in NYC at the AES Convention... man, I was really impressed. Although it was at the booth, I could identify my mix immediately. So far the best speakers I've heard.

Christian Klotzbücher, Kunstuniversität Graz, Graz (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:09:27+00:00

Christian Klotzbücher, Kunstuniversität Graz, Graz (LS1)

I heard the LS1 in NYC at the AES Convention... man, I was really impressed. Although it was at the booth, I could identify my mix immediately. So far the best speakers I've heard.

https://www.grimmaudio.com/testimonials/christian-klotzbucher-kunstuniversitat-graz-graz-ls1/

I had that feeling of an open window into sound, across a wide range of music styles.

Nigel Palmer, Audio Media, London (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:09:39+00:00

Nigel Palmer, Audio Media, London (LS1)

I had that feeling of an open window into sound, across a wide range of music styles.

https://www.grimmaudio.com/testimonials/nigel-palmer-audio-media-london-ls1/

I've listened to so much music and films and heard space and details I have never heard before.

Bart Jilesen, Studio Bart Jilesen, Utrecht (LS1)

Grimm Audio Loudspeakers

2018-11-29T16:09:52+00:00

Bart Jilesen, Studio Bart Jilesen, Utrecht (LS1)

I've listened to so much music and films and heard space and details I have never heard before.

https://www.grimmaudio.com/testimonials/bart-jilesen-studio-bart-jilesen-utrecht-ls1/

These are the most immersive, dynamic, detail-rich, nuanced, elegant, engaging, emotional, and yes, musical speakers I have ever heard. By far.

Timothy Roth, Positive Feedback, Happy Valley (LS1)

Grimm Audio Loudspeakers

2014-10-18T16:10:04+00:00

Timothy Roth, Positive Feedback, Happy Valley (LS1)

These are the most immersive, dynamic, detail-rich, nuanced, elegant, engaging, emotional, and yes, musical speakers I have ever heard. By far.

https://www.grimmaudio.com/testimonials/timothy-roth-positive-feedback-ls1/

Phenomenal!

Jan de Jeu, Music Emotion magazine, Amsterdam (LS1a)

Grimm Audio Loudspeakers

2018-07-01T12:43:01+00:00

Jan de Jeu, Music Emotion magazine, Amsterdam (LS1a)

Phenomenal!

https://www.grimmaudio.com/testimonials/jan-de-jeu-music-emotion-magazine-amsterdam-ls1a/

The Grimm LS1be offers a much higher absolute audio quality than all of the overpriced astronomical speakers on today's premium audio market.

Zhong Yi, HiFi Review, Hong Kong (LS1be)

Grimm Audio Loudspeakers

2018-06-15T12:45:13+00:00

Zhong Yi, HiFi Review, Hong Kong (LS1be)

The Grimm LS1be offers a much higher absolute audio quality than all of the overpriced astronomical speakers on today's premium audio market.

https://www.grimmaudio.com/testimonials/zhong-yi-hifi-review-hong-kong-ls1be/

The low-frequency temporal resolution is high, and the rendering of tonal pitch in the extremely low-frequency range is very precise.

Sam Ho, HiFi Review, Hong Kong (LS1be)

Grimm Audio Loudspeakers

2018-06-15T12:46:41+00:00

Sam Ho, HiFi Review, Hong Kong (LS1be)

The low-frequency temporal resolution is high, and the rendering of tonal pitch in the extremely low-frequency range is very precise.

https://www.grimmaudio.com/testimonials/sam-ho-hifi-review-hong-kong-ls1be/

It will be almost impossible to achieve the same sound quality when spending the same price on separate hifi components.

Archimedes Chan, HiFi Review, Hong Kong (LS1be)

Grimm Audio Loudspeakers

2018-06-15T12:48:17+00:00

Archimedes Chan, HiFi Review, Hong Kong (LS1be)

It will be almost impossible to achieve the same sound quality when spending the same price on separate hifi components.

https://www.grimmaudio.com/testimonials/archimedes-chan-hifi-review-hong-kong-ls1be/

If you like a fast, solid and accurate music reproduction for all kinds of music, this system will surprise you!

River Chan, HiFi Review, Hong Kong (LS1be)

Grimm Audio Loudspeakers

2018-06-15T12:50:05+00:00

River Chan, HiFi Review, Hong Kong (LS1be)

If you like a fast, solid and accurate music reproduction for all kinds of music, this system will surprise you!

https://www.grimmaudio.com/testimonials/river-chan-hifi-review-hong-kong-ls1be/

Those subwoofers are pretty darned impressive. Thanks!

Aaron Garrett, hifi enthusiast, Cambridge (LS1s-DMF)

Grimm Audio Loudspeakers

2017-11-23T12:52:49+00:00

Aaron Garrett, hifi enthusiast, Cambridge (LS1s-DMF)

Those subwoofers are pretty darned impressive. Thanks!

https://www.grimmaudio.com/testimonials/aaron-garrett-hifi-enthusiast-cambridge-ls1s-dmf/

With the Grimm LS1 unexpected details appear in the recordings: nothing is hidden, and everything sounds delicious.

Josep Armengol, Revista On Off, Madrid (LS1)

Grimm Audio Loudspeakers

2017-10-06T12:54:50+00:00

Josep Armengol, Revista On Off, Madrid (LS1)

With the Grimm LS1 unexpected details appear in the recordings: nothing is hidden, and everything sounds delicious.

https://www.grimmaudio.com/testimonials/josep-armengol-revista-on-off-madrid-ls1/

The jury could only applaud.

Joachim Pfeiffer, Audio Flatscreen Journal, Wuppertal (LS1be)

Grimm Audio Loudspeakers

2017-05-01T12:57:56+00:00

Joachim Pfeiffer, Audio Flatscreen Journal, Wuppertal (LS1be)

The jury could only applaud.

https://www.grimmaudio.com/testimonials/joachim-pfeiffer-audio-flatscreen-journal-wuppertal-ls1be/

We are honestly not able to assemble a component based system that performs better than this active system from Holland.

Jaap Veenstra, Alpha Audio, Haarlem (LS1a)

Grimm Audio Loudspeakers

2017-09-29T12:59:44+00:00

Jaap Veenstra, Alpha Audio, Haarlem (LS1a)

We are honestly not able to assemble a component based system that performs better than this active system from Holland.

https://www.grimmaudio.com/testimonials/jaap-veenstra-alpha-audio-haarlem-ls1a/

Grimm's mission to eliminate the sound of the system and present just the original recording seems totally achieved.

Josep Armengol, Revista On Off, Madrid (LS1)

Grimm Audio Loudspeakers

2017-10-06T13:01:17+00:00

Josep Armengol, Revista On Off, Madrid (LS1)

Grimm's mission to eliminate the sound of the system and present just the original recording seems totally achieved.

https://www.grimmaudio.com/testimonials/josep-armengol-revista-on-off-madrid-ls1-2/

This is such an incredibly good speaker.

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

Grimm Audio Loudspeakers

2017-10-05T13:03:32+00:00

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

This is such an incredibly good speaker.

https://www.grimmaudio.com/testimonials/jaap-veenstra-alpha-audio-haarlem-ls1be/

The LS1be has a very beautiful low end, that not only goes to great depth, but is of exceptional pureness.

Marnix Bosman, HVT magazine, Nijmegen (LS1be)

Grimm Audio Loudspeakers

2017-01-07T13:06:35+00:00

Marnix Bosman, HVT magazine, Nijmegen (LS1be)

The LS1be has a very beautiful low end, that not only goes to great depth, but is of exceptional pureness.

https://www.grimmaudio.com/testimonials/marnix-bosman-hvt-magazine-nijmegen-ls1be/

Truly, this could be the last system you'll ever buy; an endgame solution.

Marja Vanderloo & Henk Boot, 6Moons (LS1be)

Grimm Audio Loudspeakers

2016-09-16T13:14:55+00:00

Marja Vanderloo & Henk Boot, 6Moons (LS1be)

Truly, this could be the last system you'll ever buy; an endgame solution.

https://www.grimmaudio.com/testimonials/marja-vanderloo-henk-boot-6moons-ls1be-2/

We don’t often have tears in our eyes when listening to music at our office. Now we do.

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

Grimm Audio Loudspeakers

2016-09-14T13:16:56+00:00

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

We don’t often have tears in our eyes when listening to music at our office. Now we do.

https://www.grimmaudio.com/testimonials/jaap-veenstra-alpha-audio-haarlem-ls1be-2/

Let the LS1be bring you back to the essence: enjoy music. More intense than ever.

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

Grimm Audio Loudspeakers

2016-09-14T13:18:36+00:00

Jaap Veenstra, Alpha Audio, Haarlem (LS1be)

Let the LS1be bring you back to the essence: enjoy music. More intense than ever.

https://www.grimmaudio.com/testimonials/jaap-veenstra-alpha-audio-haarlem-ls1be-3/

Accurate, transparent and beautiful, that is the Grimm Audio LS1.

Jack Liu, AudioArt magazine, Taipei (LS1)

Grimm Audio Loudspeakers

2016-07-15T13:21:35+00:00

Jack Liu, AudioArt magazine, Taipei (LS1)

Accurate, transparent and beautiful, that is the Grimm Audio LS1.

https://www.grimmaudio.com/testimonials/jack-liu-audioart-magazine-taipei-ls1/

You will have to go to great lengths to find something that matches this sound quality for the same price.

Roy Ervin Solstad, Stereo+, Oslo (LS1)

Grimm Audio Loudspeakers

2016-07-02T13:24:11+00:00

Roy Ervin Solstad, Stereo+, Oslo (LS1)

You will have to go to great lengths to find something that matches this sound quality for the same price.

https://www.grimmaudio.com/testimonials/roy-ervin-solstad-stereo-oslo-ls1-2/

I’m afraid my english isn’t good enough to describe the overwhelming feeling while listening to music, reproduced by the LS1.

Ulrich Watermann, Berlin (LS1)

Grimm Audio Loudspeakers

2016-06-13T13:26:09+00:00

Ulrich Watermann, Berlin (LS1)

I’m afraid my english isn’t good enough to describe the overwhelming feeling while listening to music, reproduced by the LS1.

https://www.grimmaudio.com/testimonials/ulrich-watermann-berlin-ls1/

Best sound of show, stunning, Meisterhaft.

Theo Wubbolts, HVT magazine, Nijmegen (LS1)

Grimm Audio Loudspeakers

2015-07-01T13:31:09+00:00

Theo Wubbolts, HVT magazine, Nijmegen (LS1)

Best sound of show, stunning, Meisterhaft.

https://www.grimmaudio.com/testimonials/theo-wubbolts-hvt-magazine-nijmegen-ls1/

These are the best speakers on the planet. Period.

Timothy Roth, Positive Feedback, Happy Valley (LS1)

Grimm Audio Loudspeakers

2014-12-19T15:09:14+00:00

Timothy Roth, Positive Feedback, Happy Valley (LS1)

These are the best speakers on the planet. Period.

https://www.grimmaudio.com/testimonials/timothy-roth-positive-feedback-happy-valley-ls1/

As it turns out, Truth equals Love.

Timothy Roth, Positive Feedback, Happy Valley (LS1)

Grimm Audio Loudspeakers

2014-10-18T15:13:28+00:00

Timothy Roth, Positive Feedback, Happy Valley (LS1)

As it turns out, Truth equals Love.

https://www.grimmaudio.com/testimonials/timothy-roth-positive-feedback-happy-valley-ls1-2/

This is the first plug-n-play, all-in-one, system with true high-end sound.

Marshall Nack, Positive Feedback, Happy Valley (LS1)

Grimm Audio Loudspeakers

2013-12-05T15:29:17+00:00

Marshall Nack, Positive Feedback, Happy Valley (LS1)

This is the first plug-n-play, all-in-one, system with true high-end sound.

https://www.grimmaudio.com/testimonials/marshall-nack-positive-feedback-happy-valley-ls1/

The naturalness of the LS1 turns me on big time.

Wolfram Eifert, AUDIOphile, Stuttgart (LS1)

Grimm Audio Loudspeakers

2013-11-28T15:37:24+00:00

Wolfram Eifert, AUDIOphile, Stuttgart (LS1)

The naturalness of the LS1 turns me on big time.

https://www.grimmaudio.com/testimonials/wolfram-eifert-audiophile-stuttgart-ls1/

This is a speaker that sets a reference level and everybody should hear it, regardless of whether he intends to buy it or not !

Dimitris Stamatakos, AVMentor, Athens (LS1)

Grimm Audio Loudspeakers

2013-11-26T15:39:02+00:00

Dimitris Stamatakos, AVMentor, Athens (LS1)

This is a speaker that sets a reference level and everybody should hear it, regardless of whether he intends to buy it or not !

https://www.grimmaudio.com/testimonials/dimitris-stamatakos-avmentor-athens-ls1/

The system (...) is the equal of systems of hundred thousands of Euros when it comes to aspects like neutrality, purity and naturalness of tone.

Clemens Wergin, Die Welt, Berlin (LS1)

Grimm Audio Loudspeakers

2013-05-13T15:41:20+00:00

Clemens Wergin, Die Welt, Berlin (LS1)

The system (...) is the equal of systems of hundred thousands of Euros when it comes to aspects like neutrality, purity and naturalness of tone.

https://www.grimmaudio.com/testimonials/clemens-wergin-die-welt-berlin-ls1-2/

The LS1 is by far the best speaker that AUDIO had the pleasure of reviewing in over 35 years; this especially in the two crucial audiophile disciplines of neutrality and detail reproduction.

Wolfram Eifert, AUDIO, Stuttgart (LS1)

Grimm Audio Loudspeakers

2013-04-13T15:44:54+00:00

Wolfram Eifert, AUDIO, Stuttgart (LS1)

The LS1 is by far the best speaker that AUDIO had the pleasure of reviewing in over 35 years; this especially in the two crucial audiophile disciplines of neutrality and detail reproduction.

https://www.grimmaudio.com/testimonials/wolfram-eifert-audio-stuttgart-ls1/

Their natural sound and their unimposing, deep trueness kept overwhelming me and my colleagues.

Bernhard Rietschel, Editor in Chief of AUDIO, Stuttgart (LS1)

Grimm Audio Loudspeakers

2013-04-12T15:47:00+00:00

Bernhard Rietschel, Editor in Chief of AUDIO, Stuttgart (LS1)

Their natural sound and their unimposing, deep trueness kept overwhelming me and my colleagues.

https://www.grimmaudio.com/testimonials/bernhard-rietschel-editor-in-chief-of-audio-stuttgart-ls1/

Did Grimm Audio reinvent the loudspeaker?

Bert Oling, Hi-fi Video Test, Nijmegen (LS1)

Grimm Audio Loudspeakers

2011-04-01T16:03:38+00:00

Bert Oling, Hi-fi Video Test, Nijmegen (LS1)

Did Grimm Audio reinvent the loudspeaker?

https://www.grimmaudio.com/testimonials/bert-oling-hi-fi-video-test-nijmegen-ls1/

The LS1 seems to be a melting pot for all your expertises. I just find it fascinating. I am quite certain that the LS1 is at least the very very best 'value' in the market right now.

Wai-Shan Lam, hifi enthusiast, Hong Kong (LS1)

Grimm Audio Loudspeakers

2012-01-26T16:14:37+00:00

Wai-Shan Lam, hifi enthusiast, Hong Kong (LS1)

The LS1 seems to be a melting pot for all your expertises. I just find it fascinating. I am quite certain that the LS1 is at least the very very best 'value' in the market right now.

https://www.grimmaudio.com/testimonials/wai-shan-lam-hifi-enthusiast-hong-kong-ls1/

If someone came up with the idea to call the LS1 the best speakers he's ever heard, I would join in with a smile.

Max Schlundt, Kultur...Technik, Berlin (LS1)

Grimm Audio Loudspeakers

2011-12-19T16:18:46+00:00

Max Schlundt, Kultur...Technik, Berlin (LS1)

If someone came up with the idea to call the LS1 the best speakers he's ever heard, I would join in with a smile.

https://www.grimmaudio.com/testimonials/max-schlundt-kultur-technik-berlin-ls1/

For those looking after the exact sound of a recording, the Grimm solution cannot be beat.

Marja Vanderloo & Henk Boot, 6Moons (LS1)

Grimm Audio Loudspeakers

2012-10-24T16:20:27+00:00

Marja Vanderloo & Henk Boot, 6Moons (LS1)

For those looking after the exact sound of a recording, the Grimm solution cannot be beat.

https://www.grimmaudio.com/testimonials/marja-vanderloo-henk-boot-6moons-ls1/

The LS1be transfers the original emotion of the music performance

Super AV magazine, Hongkong (LS1be)

Grimm Audio Loudspeakers

2019-03-09T10:43:35+00:00

Super AV magazine, Hongkong (LS1be)

The LS1be transfers the original emotion of the music performance

https://www.grimmaudio.com/testimonials/super-av-magazine-hongkong-ls1be/

As precise as monitor speakers, yet equally pleasurable for relaxed listening, and aesthetically very attractive - this is truly an extremely rare combination.

Jonas Kaufmann, Herrsching am Ammerseem (LS1be)

Grimm Audio Loudspeakers

2019-09-26T14:51:38+00:00

Jonas Kaufmann, Herrsching am Ammerseem (LS1be)

As precise as monitor speakers, yet equally pleasurable for relaxed listening, and aesthetically very attractive - this is truly an extremely rare combination.

https://www.grimmaudio.com/testimonials/jonas-kaufmann-herrsching-am-ammerseem-ls1be/

That was love at first sound and second sight. Never heard a system that gets better and better as you listen longer and longer. It's an absolutely joy-machine for deep diving into music, thanks a lot for creating this future icon.

Björn Molt, Berlin, Germany (MU1 & LS1)

Grimm Audio Loudspeakers

2026-07-05T19:07:27+00:00

Björn Molt, Berlin, Germany (MU1 & LS1)

That was love at first sound and second sight. Never heard a system that gets better and better as you listen longer and longer. It's an absolutely joy-machine for deep diving into music, thanks a lot for creating this future icon.

https://www.grimmaudio.com/testimonials/bjorn-molt-berlin-germany-mu1-ls1/

The thing about these is that the glass ceiling of performance potential isn’t just lifted, it’s shattered. It’s gone.

Ola Björling, Ukiro Music, Sweden (LS1c)

Grimm Audio Loudspeakers

2026-07-05T19:26:40+00:00

Ola Björling, Ukiro Music, Sweden (LS1c)

The thing about these is that the glass ceiling of performance potential isn’t just lifted, it’s shattered. It’s gone.

https://www.grimmaudio.com/testimonials/ola-bjorling-ukiro-music-sweden-ls1c/

[This] is exactly what I’m after with hifi.

Michael Lavorgna, Twittering Machines (LS1c & MU1)

Grimm Audio Loudspeakers

2026-07-05T19:28:14+00:00

Michael Lavorgna, Twittering Machines (LS1c & MU1)

[This] is exactly what I’m after with hifi.

https://www.grimmaudio.com/testimonials/michael-lavorgna-twittering-machines-ls1c-mu1/

The number of times I have been sad to let a speaker go can be counted on one hand. One more finger was utilized to include the Grimm Audio LS1c system.

Amir Majidimehr, Audio Science Review (LS1c)

Grimm Audio Loudspeakers

2026-07-05T19:29:46+00:00

Amir Majidimehr, Audio Science Review (LS1c)

The number of times I have been sad to let a speaker go can be counted on one hand. One more finger was utilized to include the Grimm Audio LS1c system.

https://www.grimmaudio.com/testimonials/amir-majidimehr-audio-science-review-ls1c/

There is not a genre that the Grimms coudn’t do justice to with their panache and lack of coloration.

Rogier van Bakel, Stereophile, US (LS1c)

Grimm Audio Loudspeakers

2026-07-05T19:32:49+00:00

Rogier van Bakel, Stereophile, US (LS1c)

There is not a genre that the Grimms coudn’t do justice to with their panache and lack of coloration.

https://www.grimmaudio.com/testimonials/rogier-van-bakel-stereophile-us-ls1c/

It had a seductive combination of high resolution and relaxed ease that I found immensely involving.

Robert Harley, The Absolute Sound, US (LS1c & MU1)

Grimm Audio Loudspeakers

2026-07-05T19:34:28+00:00

Robert Harley, The Absolute Sound, US (LS1c & MU1)

It had a seductive combination of high resolution and relaxed ease that I found immensely involving.

https://www.grimmaudio.com/testimonials/robert-harley-the-absolute-sound-us-ls1c-mu1/

It is the best-measuring loudspeaker I have encountered!

John Atkinson, Stereophile, US (LS1c)

Grimm Audio Loudspeakers

2026-07-05T19:59:03+00:00

John Atkinson, Stereophile, US (LS1c)

It is the best-measuring loudspeaker I have encountered!

https://www.grimmaudio.com/testimonials/john-atkinson-stereophile-us-ls1c/

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Grimm Audio Loudspeakers

The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.

Despite their compact size, the floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz. By adding our LS1s or SB1 subwoofer, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.

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