Description
>> --> >> --> Description >> --> UESUGI Uesugi Laboratory MODEL/U?BROS-5 TYPE-L=For low impedance/Late model High performance = Ultra-thin special permalloy / multi-layered core Tamura Manufacturing = Custom-made product. Use a cleaning stick to clean all the input and output terminals that transmit weak music signals. The entire terminal was thoroughly cleaned, both inside and out. The demagnetization process to remove unnecessary magnetism from the step-up transformer, which will be described later, has also been carried out. We have created the content so that you can use it comfortably from the moment you arrive. If you are okay with a copy, we can include an instruction manual handwritten by Uesugi himself. The earlier model was equipped with a PASS terminal for connecting MM cartridges. The item on sale is a later model, from a time when this function was omitted. Depending on the music source and mood, you can use MM or MC, etc. Noisy? For enthusiasts The ability to change the connections of each terminal to accommodate this was extremely useful. For those who care about sound quality, this is a feature that was not really necessary in the first place. On the contrary, I think they are probably glad that it was lost. The L type is suitable for 3 to 10 ? cartridges, and the H type is suitable for 10 to 40 ? cartridges. Low impedance cartridges, such as those made by Ortofon, are of the L type. High impedance MC cartridges such as those from Denon and Sony. The other H type is compatible with mid-impedance types such as Audio Technica. The idea that the essence of MC cartridges lies in high current (= low voltage) The idea that low output/low impedance type is the true essence We too agree completely. The step-up transformer itself is a low impedance cartridge that generates power. It has physical properties that are extremely suitable for utilizing large amounts of power and converting current to voltage. It is said to be more suitable for these types of cartridges. Because the structure of a transformer is simple, the material, structure, shape and size of the core, the thickness of the winding, the number of turns and the winding method, etc. It requires the accumulation of detailed know-how, past experience is important, and the skills of a master craftsman are the key. Recently, analog records have been in the spotlight, and are no longer considered the king of audio. I am very happy that the spotlight is on me, but this is a very difficult and challenging field. This is purely a hobby, so I dont think casual fans will be able to handle it and give up. I sincerely hope that this does not end up being just a passing fad. MC cartridges and the associated step-up transformers also jumped on the bandwagon. While attention is being paid to the performance of classic machines from the past, products that focus on demagnetizing them are being developed. I felt that some of the things that were coming out were worthy of attention. When you apply this method, you can certainly feel the effects, but there are pros and cons for each companys product. In other words, it felt like there was no definitive version, but the technique that I had longed for has finally been realized. The label that was adopted was Sheffield Labs, a US company that is world-famous for its high quality sound. Magnetic Domain Matrix Signals = By utilizing nine types of demagnetizing signals that eliminate magnetic distortion Measures have been taken to neutralize unwanted magnetism in the core (the winding frame for the conductor), which forms the heart of the step-up transformer. In order not to destroy the step-up transformer, the gain is optimized up to phono level. By having a frequency characteristic very similar to the equalizing curve (reverse RIAA) engraved on the record, This results in maximum demagnetization effect without causing any adverse effects or stress. The nine degaussing signals are divided into frequency ranges, each with a different signal spectrum. It completely demagnetizes the entire audible range, and it is no exaggeration to say that the treated equipment has been revived. As a result of the remarkable improvement in sound quality, we intend to use this product in all of the MC step-up transformers that we offer. We hope you will be aware of this great sound quality bonus that you will never get anywhere else. The late Yoshiaki Uesugi, who was already well-known as an audio critic and an author of amplifier construction articles, Founded in 1971, Uesugi Laboratory began as a specialist manufacturer of vacuum tube amplifiers. At that time, audio amplifiers were already rapidly becoming semiconductor-based, and tube amplifiers themselves were very much in the minority. However, his stance that vacuum tubes are the best amplifying element has been unwavering throughout. His career began when he was still a university student and worked for Eroica Electronics, a new amplifier manufacturer. As the anecdote suggests, he was a man of exceptional ability who was appointed General Manager of the Companys Business Affairs Department. Although he released a high-performance luxury amplifier, friction gradually arose among his older colleagues. In the end, I left the company after two years, and Eroica Electronics itself soon came to an end. A few years later, he co-founded the Uesugi Laboratory with his brother, Takuo Uesugi, and released their first product, the UTY-1, in 1973. The same naming was used for subsequent models, with UTY being the initials of Uesugi Takuo Yoshio, and another name, U-BROS, meaning Uesugi Brothers. Unfortunately, he passed away at the age of 68 from lung cancer in December 2010, just before the 40th anniversary of the founding of the Uesugi brand. He had been friends with the engineer and critic for some time, and they shared many common interests, including their tastes in music and their philosophy on amplifier design. At the time, Nobuo Fujiwara, who was in charge of development in Victors audio division, officially took over the Wesugi brand at his request. While updating its content to keep up with the times, the company has inherited his aspirations and continues to exist as a prestigious brand today. Its an old story, but in the latter half of the 1970s, MC cartridges were gradually gaining in popularity. At the time, there was much debate as to whether a head amplifier or a transformer was better as a means of boosting the voltage. Due to the characteristics of MC cartridges, each type has its own strengths and weaknesses, and the number of products in the market seemed to be quite comparable. However, in the 1980s, transformers gradually began to pull away from head amplifiers and eventually replaced them. Therefore, for those who still enjoy analog audio with MC cartridges, a step-up transformer is essential. From the past to the present, various transformers have been released, and the combination of cartridge and transformer has changed. Because the differences in sound are clearly expressed, exploring the various aspects of this technique is a deep and challenging, yet enjoyable, research topic. Even UESUGI, who is well versed in vacuum tube amplifiers, was unable to produce a tube-type MC head amplifier. This decision was made mainly in consideration of the problem of S/N ratio, and since passive transformers do not generate noise in principle, With the tiny amount of power generated by a phono cartridge, even a solid-state head amplifier cannot compete with a transformer in this area. I feel that it was a logical choice for Yoshiaki Uesugi to use a transformer to boost the MC cartridge. In the current UESUGI lineup, MC step-up transformers are not sold separately. There is only one model with a built-in phono amplifier. Uesugi Laboratory has released a step-up transformer for MC cartridges, developed to bring out the full potential of MC cartridges. The transformer used was made to order, developed jointly by Uesugi Laboratory and Tamura Manufacturing, a prestigious company with extensive knowledge and experience in transformer manufacturing. The transformers core material is made of a special ultra-thin/multi-layered super-permalloy, which gives it excellent characteristics. Permalloy is a soft magnetic alloy made of nickel and iron, and has very high magnetic permeability and is easily permeable to magnets. It is an ideal material for transformer cores, and continues to maintain an unshakable position as the core of high-end/high-performance transformers. Permalloys are classified by their nickel content, with the highest grade being 78% super-permalloy, which is also very expensive. In addition, the high-frequency peaks are pushed to a range above 100kHz, which suppresses coloration of the transformer itself. In order to prevent deterioration of the separation characteristics, a completely independent left and right structure is adopted, and not only the signal system including the transformer but also The earth system is also designed to be completely independent for the left and right sides. In addition, the chassis earth of the main unit is structured so that it is earthed from the control amplifier main unit. To prevent induced hum, the chassis is made of high-grade steel and the transformer is multi-shielded. Furthermore, the transformer is floating in a large copper-plated iron case. Moreover, in order to suppress an occurrence of a magnetic distortion by iron material, the original know-how is incorporated into leading a signal line. In order to eliminate the deterioration of sound quality that occurs when an impedance changeover switch is installed, each impedance is dedicated. Two variations are available: low impedance and high impedance. The primary impedance of the L type is set to 3 ?, and the primary impedance of the H type is set to 40 ?. The L type is suitable for 3 to 10 ? cartridges, and the H type is suitable for 10 to 40 ? cartridges. Model MC step-up transformer Primary Impedance L type: 3? H type: 40? Secondary Impedance L type: 2k? H type: 4k? Step-up ratio L type: 25.8 times H type: 10 times Secondary side suitable load range 30k? to 100k? Channel Balance Within 0.3 dB Frequency Response 10Hz to 130kHz +1.0 -0.5dB External dimensions Width 174 x height 125 x depth 121 mm weight Approx. 2.5kg This model has multiple GRD terminals. One end is connected to the earth wire from the tone arm, and the other end is connected to the earth terminal on the amplifier. I was advised that this would be more preferable. In fact, in my environment, connecting the earth cable in this way gave me good results. If you are okay with making one using available materials, we can provide you with our homemade earth cable with Y-lugs on both ends. There are some scratches and scuffs from use, but there doesnt appear to be any major damage. There may be other things Ive missed, but Ive tried to include as many pictures as possible, so please refer to them. Appearance judgments vary from person to person, and impressions vary too. If you are concerned about details, please refrain from bidding. We would appreciate your consideration from the perspective of a used audio product. I am truly honored to be here, as there are so many different types of people. As a general rule, we ask that you do not make any complaints, returns or cancellations. We will deliver your order nationwide free of charge using Yahoo! Neko Takkyubin. Please note that some people do not wish to be evaluated. We will send a reply to those who have given us a rating. If you do not need a rating, you do not need to rate us. Thank you very much for your cooperation. Payment We only accept PayPal payments. Please pay within 5 days after auction is finished. Term of Sale Money back guarantee within 14 days if returned by customer. We offer 14 days money back guarantee for defective products. However the buyer must pay money for returning it back to us. About Us A specialty shop offering a wide variety of carefully selected Japanese brand items. Unless marked used all of our inventory is brand new, so you can feel confident about your purchase. Even if you think to yourself, But the item I want is only available in Japan., make sure to consult with us before giving up hope. We will look for and suggest the best products on your behalf. International Buyers - Please Note Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges.
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