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For the second time the AES Netherlands section invited us to give a presentation about our design strategies. This time we decided to stage our brand new LS1 DSP corrected loudspeaker. Bruno talked about the fundamental issues one has to address when designing a loudspeaker of reference quality and afterwards the group of 60 attendents split into groups for listening sessions.

With DSP controlled speakers like the LS1 the quality of frequency response measurements is transferred almost directly into the speaker’s frequency curve. The quality of the measurement can therefore make or break the end result. We are very glad we could add a series of real anechoic chamber measurements to the quasi-anechoic measurements in our lab and garden. Many thanks to Utrecht School of Music Technology in Hilversum for that.

Dutch hifi magazine Music Emotion featured a review of the CC1 by Jan de Jeu. On a test where the CC1 reclocks the spdif line of his CD transport he writes: "... A beautiful stereo image. Normally I never play this disc until the end but this time I keep listening breathlessly. Amazed by the difference I keep switching back and forth. (...) Both ends of the spectrum are beautifully expressed in the sound of the organ and brass instruments. The texture of the brass instruments is fabulous." 

The New York AES will stage the premiere of Grimm Audio's LS1 production unit! The last few months have seen important changes in the driver selection which takes the LS1 even one step further than the prototype. TPM is now shipping too. The CC1 can be heard in action in the AES Special Events Room. Mike Chafee, responsible for all sound reinforcement at the AES show, preferred the CC1 as "head of the class" after comparing it to other high end solutions. We are most happy to meet you at booth #539. 

We are very happy to announce that Dutch label Channel Classics has become one of our AD1 customers. Among the first recordings made using the AD1 is Mahler Symphony no.4 by Ivan Fischer and the Budapest Festival Orchestra. This is a SACD of breathtaking beauty, concerning performance as well as sound quality. It is a true demonstration of the goal of Grimm Audio: to fundamentally improve on current recording and playback quality. 

Together with our German distributor Audio Import, Grimm Audio exhibits at the Hi-End Gear show in Hamburg. We will demonstrate our LS1 loudspeaker in the exhibition’s exclusive listening room. The relaxed atmosphere of this small but great show will certainly lead to very nice listening sessions and interesting discussions. You are invited to bring your own recordings for reference.

The forum of our HongKong Hifi products distributor Audio Exotics had this hilarious conversation: "DSo was complaining to Marvel about me bringing this CC1 to his home just when he felt his system was in optimum state. Later on, he SMS-ed and said, "PT, after you took back the CC1, I had no mood to listen tonight. As a result, I went out drinking with friends."

From the Pure Super Audio blog: "As some of you know, Kevin Gray and I have been working on a bunch of wonderful Nat "King" Cole Capitol Records’ reissues for Acoustic Sounds/Analogue Productions over the past 1/2 year. (...) For us, in that situation, the Grimm AD1 DSD converter killed the [competitor]. It sounded exactly like the analog, both tone wise and ambiance wise. Very impressive." Steve Hoffman, Acoustic Sounds

Grimm Audio will celebrate its 5th anniversary at the 126th AES in Munich. And we are sure to have a party, because we will show two exciting new products! The first’near production’ units of the LS1 will be introduced, only one year after the prototype was presented. And we will have the Grimm Audio TPM high performance audio cable. Come and visit us at booth #1803.

British magazine Hi-fi World raved about the CC1 in their review for the May issue and granted it the maximum amount of 5 Globes, which is "Outstanding". Reviewer Tony Bolton used the CC1 as word clock source for a Marantz SA-7 and experienced improvements in texture, focus, definition and stereo image. He enjoyed beautiful resonance and impact of hard struck piano chords. And he felt that the whole spectrum of the sound improved with the CC1. Please enjoy reading his full Hi-fi World review pdf.


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

    Fritz Fey, Studio Magazin, Oberhausen (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)

  • During our sessions with Grammy winning saxophonist Kenny Garrett, the CC1 made all the difference in the world!

    Al Pryor & Todd Whitelock, Mack Avenue records, Hempstead (CC1)

  • From the first minute I knew that something very special was happening. (...) The quality surpasses everything I heard before on my system.

    Gerard Lombrez, Lille (CC1)

  • Among all the truly excellent SACDs from Channel Classics, the very best sound quality wise is the Mahler 4th recorded with the Grimm IMHO.

    Chris Fredriksson, HiFi enthusiast, Sweden (AD1)

  • I'm now using a DSD converter called a GRIMM for my SACD mastering. Big improvement.

    Steve Hoffman, Audio Fidelity, Los Angeles (AD1)

  • I have used all high end AD converters known to date. Every one of them had a sound to it. Your converter doesn't: it is completely transparant!

    René Gambini, Lyrinx, Marseille (AD1)

  • 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)

  • We are very impressed by the quality of this unit.

    Günther Pauler, Pauler Acoustics, Northeim (CC1)

  • I was focusing more on the music than the equipment, something that rarely happens when I listen to digital...

    Tony Bolton, Hi-fi World, London (CC1)

  • 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)

  • I was in the opportunity to hear your CC1 unit and I have to say INCREDIBLE!!

    Carlos Imperatori, Producciones Tumbador, Caracas (CC1)

  • This is a major improvement. We need much less eq on the high end, the low end sounds more solid and the punch on the snare is great. This clock is a large improvement, we were amazed.

    Peter Riebeek, Studio 150, Amsterdam (CC1)

  • I didn't know clock influence was that big!

    Tim Vine-Lott, Air studios, London (CC1)

  • Sensational! I have never found this quality in any commercial AD converter.

    Ronald Prent, Galaxy Studios, Mol (AD1)

  • Throughout even the most turbulent passages the recording space stays luxuriously illuminated and the soundstage remains absolutely clear.

    Reinhold Martin, Hifi Statement Net Magazine, Gröbenzell (CC1)

  • One for all and everything.

    Fritz Fey, Studio Magazin, Oberhausen (LS1)

  • The CC1 is a brilliantly designed piece of equipment. Every piece of gear that I plugged into it sounded better and more natural.

    Erik Zobler, Mix Magazine, Los Angeles (CC1)

  • Very impressive.

    Steve Hall, Future Disc, Los Angeles (AD1)

  • It seems as if the musicians have more fun when they play music.

    Ingo Iebhart, hifi enthusiast, Eberdingen (CC1)

  • This is a revelation. It is the first time in my 20 years of digital recording that I hear a fundamental improvement in sound quality.

    Leo de Klerk, Bloomline Studio, 's Gravendeel (AD1)

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

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

  • The AD1 made the most realistic recording of my piano that I have ever heard. Incredibly realistic and involving.

    Mark Conese, Ambient Records, Stamford (AD1)

  • I was thrilled with your power supplies for my Neumann M50's. We used those mics for an upcoming Chandos release of the Kansas City Chorus, and they were stunning.

    John Newton, Soundmirror, Boston (MP1)

  • A signal that sounds pretty decent with a good clock, sounds just incredible with the Grimm Clock.

    Hay Zeelen, Hay Zeelen Mastering, Amsterdam (CC1)

  • 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)

  • This is a larger improvement than I expected. The sound actually gains quality in all aspects.

    Marnix Bosman, HVT magazine, Baarn (CC1)

  • Suddenly and distinctly, there's a palpable increase in naturalness, extension and spaciousness.

    Nicholas Bedworth, Positive Feedback, Makawao (CC1)

  • Realize that not all timepieces are created equally. In this regard, the Grimm CC1 has no peer.

    Bob Katz and Garrett Haines, TapeOp, Sacramanto (CC1)

  • The jitter measurement results of the CC1 were the best of all competitors.

    Friedemann Kootz, Studio Magazin, Oberhausen (CC1)

  • Last week I was recording a strings section and piano. My client was very happy and he asked me if I changed something in the studio. Of course, it was your CC1.

    Josep Umbria, Calma Estudis, Manacor (CC1)

  • I was impressed by how my chain with the EMM's got a benefit when I added a Grimm clock to my setup. Guided by what the literature and many designers are saying I was stunned about the change in a positive way) in sound.

    Daniel Dettwiler, Idee und Klang Studio, Basel (CC1)

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

    Al Pryor, Mack Avenue records, Hempstead (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)

  • I did some sessions in 44.1, 48 and 96. It works great, and sounds fantastic. The CC1 is such a great upgrade in the studio, amazing!

    Samuel Girardin, Point d'Orgue, Montreal (CC1)

  • Grimm Audio enriches the Loudness Movement with exceptionally price worthy and designful tools.

    Dieter Kahlen, Studio Magazin, Oberhausen (LevelView)

  • Did Grimm Audio reinvent the loudspeaker?

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

  • I'm in tears, listening to my own recordings.

    Ben Zijlstra, Dutch Film & Television Academy, Amsterdam (CC1)

  • 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)

  • I had expected a small sound improvement. What happened is just the opposite: I am very impressed.

    Gerd Hoppe, hifi enthusiast, Alicante (CC1)

  • A world class machine!

    Yasushi Hamase, Be-Tone Studio, Kanagawa-Ken (AD1)

  • A fantastic experience to work with this device.

    Hein Dekker, producer for Channel Classics, Baarn (AD1)

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