Thorough pursuit of light weight and high accuracy. "Grand Magnesia" that brings out the true value of power amplifiers to the limit

Tiglon's new generation audio rack "GRAND MAGNESIA". Not only its sound quality effect, but also the ease of use due to the adoption of the stack type, it has gained immense popularity. This time, Masamitsu Fukuda introduced a one-stage rack for power amplifiers at home. We will tell you about the charm of this rack, which won the highest award "Grand Prix" in the "Audio Accessory Name Machine Award 2022", including comparison with the old model.

TIGLON "GRAND MAGNESIA" * The photo shows the one-stage "GMR-1" (price: 72,600 yen / tax included). The audio rack has an important role to play. In addition, visually enjoying the equipment that fits neatly in the rack also supported the hobby of audio as a maniac's purpose. In the heyday of audio, specialized magazines reported that it was advantageous for audio racks to be made of heavy and solid boards. Products that were hit by hand and had a light sound were shunned, and mass-filled racks became the mainstream. The ideal around 1980 is still an element that is still inherited, but the design of today's state-of-the-art audio racks has undergone dramatic research. The trend is that research is progressing that is as delicate and accurate as precision equipment, and that the physical characteristics of materials are also optimal. How do audio racks improve performance? The structure is simple with the board on which the equipment is installed and the stanchions that support it vertically toward the floor. Therefore, the board material that directly supports the equipment is important. However, this material is no longer ideal because it simply has no squeal and is thick. In order to bring out the response in the middle band and the performance in the mid-high range with a high SN ratio in the wide band characteristics, it can be judged that the MDF material seems to be safe and has a lot of loss and is not optimal. Currently, the plate materials used in high-performance racks are surprisingly thin, but the reason why they still exert excellent effects is the wide-band performance with a high signal-to-noise ratio and low vibration distortion. More important was the material and structure of the columns that support the board. Tiglon has further improved the magnesium cylindrical structure, reviewed the internal damping material, and composed of indium O-rings, stainless steel spikes, etc. in this Grand Magnesia series. ■ The power of the spike structure is enormous. A drastic change to a sophisticated high signal-to-noise ratio It is the idea of ​​leading manufacturers to think that an audio rack is not just a shelf but a part of audio equipment, and I agree with this influence. It is noteworthy that Grand Magnesia has adopted a new structure with improved columns. This time, I compared the sound quality of the one-stage "GMR-1" and the company's conventional product "TMR-1". It was equipped with an Accuphase power amplifier "P-4500", and the floor was carpeted. When it is set to "GMR-1", it changes drastically to a sophisticated high SN ratio. To be honest, I was surprised at how much difference it made. The sound is highly pure and has little distortion and turbidity. Tested by mounting the Accuphase power amplifier P-4500 on the one-stage "GMR-1" in the listening room of Masamitsu Fukuda. The TMR-1, which was also compared with the company's conventional model "TMR-1", has a structure in which a magnesium cylinder is installed as it is, so there is no doubt that this is the power of the newly developed spike structure. The space is wide and clear, the sound is quiet, and the transients in the mid-high range are excellent. Bass tightens powerful energy and has high damping performance. The TMR-1 feels slimy and sweet, and the bass feels thick and loose. The price of "GMR-1" is higher, but its value is higher. It shows the performance that brings out the true value of the power amplifier to the limit. Since Grand Magnesia is a stack type, it can be expanded as needed. The photo shows the 3-stage specification "GMR-3" (217,800 yen / tax included) How is the power amplifier installed? Flooring may often be installed directly on the floor. However, since the vibration of the speaker is finally transmitted to the floor, it is better to take measures. Anyway, it is easy to think that the power amplifier is not very delicate, but it was a test that can be understood that it is subject to the conditions of the installation environment. The board material is a composite structure that combines 9 mm and 12 mm of Russian birch, and is designed with further ingenuity in rigidity. This excellent composition has been adopted for the wall material of the room by remodeling, and the board has been made and examined by myself, so it is an easy-to-use and reliable material among the board materials. This time I was able to experience the effects of the differences in the main pillars of the audio rack, which was added to my new knowledge. (Courtesy: Tiglon)

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This article is a reprint from "Quarterly Audio Accessory vol.183".