High-concerned chemical: None
Package: Yes
Channels: 2 (2.0)
Model Number: McIntosh MC75
Maximum Power Per Channel: 75W
Brand Name: CHUBAN
Origin: Mainland China
Certification: CE

1:1 replica McIntosh mono power amplifier MC75

Output impedance group: 2Ω4Ω8Ω

Output power: (single) mono 75W

Bile duct model: (single only) two selected KT88 bile, one selected 2AX7 bile, two selected 12AT7 bile.

Frequency response: 20Hz-20kHz

Harmonic distortion: 0.5%

S/N Ratio: >100dB

Input sensitivity: 1.7V 0.85V

Power supply voltage: 220V

Overall net weight: 18kg (single)

Product use: Mono 75W pure rear stage, it can be used with the front stage, a variety of speaker resistance

Anti-selection, universal any difficult to push speakers

MC75 Road to Engraving

McIntosh’s classic vacuum tube amplifier is nothing more than two sets, one is the MC275 stereo rear stage, and the other is the MC75 mono rear stage, otherwise McIntosh will not continue to produce this model until today, which lasted more than half a century. It is mentioned that Mai Jingtu began in 1949, and it is known that they came from the monophonic and tube generation generations. The first work was a 50W1 back-up stage, which was published in 1949, and has begun to use Unity Coupled Circuit. 2009 is McIntosh’s diamond celebration. To celebrate the 60th anniversary of its founding, MC75 made its comeback for the first time, and together with C22, a set of three machines, reproduced as a limited gold edition (the global limit is only 180 sets), MC75 unipolar vacuum tube power The amplifier provides a classic design with modern performance standards. It has all the functions to meet the needs of today’s music lovers. The new MC75 in our store is made by a team of Taiwan enthusiasts after years of research and improvement. The components and carefully selected matching tubes are more authentic and flavorful than the modern reproduced tubes on the market (many of them use inferior KT88 tubes with a cost of tens of yuan). The whole set of machines is made by hand, so the order For a long time, the independently researched vacuum tube automatic bias adjustment technology is not available on the market for MC75. (Detailed introduction below). MC75’s large and super large power transformer provides exceptionally high power and dynamic response from a pair of KT88 output tubes. Once again, a performance benchmark has been set for tube amplification. Such a large power can be easily moved, whether it is hundreds of thousands of large floor-standing 15-inch speakers or a box with ultra-low sensitivity, and the tube vocal is more mellow and delicate, with rich emotions. The soul transformer of the tube amplifier, each transformer is made by the Taiwanese fever team one by one according to the MC75 precision algorithm of Mai Jingtu. All of them are made of monocrystalline oxygen-free copper with a purity of 99.99%. MC275 has a stereo output of 75 watts. , MC75 is 75 watts per channel, separating the two channels to achieve better channel separation. Equipped with McIntosh’s special Unity Coupled Circuit (single coupled circuit), it can provide lower distortion, better frequency response and longer vacuum tube durability, which also makes the McIntosh tube machine durable. There are two over-supply power transformers and output transformers on the back of MC75, giving MC75 powerful power and excellent dynamic performance. MC75 provides XLR input and RCA input. The input sensitivity can be adjusted in two steps of 0.85V and 1.7V. The output level of the front-end equipment. The output part provides 2 ohms, 4 ohms and 8 ohms each, and various speakers can be well matched. The sound of the new Taiwanese version of MC75 is more delicate and clean than other reissues, more emotional, and full of thrust. No matter how difficult it is to push or how big the speakers are, it is easy and free under the promotion of MC75. The sound is sweet and soft, natural and concerned, and wide and wide. It’s especially exciting to listen to the orchestral music compiled by the large scale. You can easily feel the hierarchical voices, the undulating dynamics in the music, the thick and full sound bottom, and the rich and strong low frequency.

Two KT88 electronic tubes (single-ended) are driven by the second stage, with high pressure resistance, full and moist sound, vigorous atmosphere, quiet and delicate background, abnormally strong low frequency, and easy to deal with big food speakers such as symphony. One 12AX7A tube (single-ended) high gain tube, which is 100 times the gain coefficient of ordinary 6N3, 6N8, etc., the sound is more emotional, rich in details and appealing.

Two 12AT7A tubes (single-ended) have better effect, sound thickness, density, dynamics and sound field

They are better than other tubes, and the layers are clear and the background is clean and delicate.

Transformer, the soul of tube amplifier

Everyone knows that the transformer is one of the most important parts of the tube amplifier, and the winding method and material of the transformer are the most important. The reason why the Mai Jingtu tube tube amplifier is unique is its unique multi-wire parallel winding transformer technology. ;Re-enacted version of Maijingtu MG75 single-ended has a total of two cattle combination is the output cattle. The team of experienced Taiwanese enthusiasts uses up to + six layers at the cost (the original MC is the second layer) UP=0 (single crystal oxygen-free copper grouping cross-winding method, the purity of single crystal oxygen-free copper can reach 99, reaching High level, each cow will be handed over to SNE for freezing after winding. (After the low temperature treatment of the metal, the low temperature treatment of the conductor will disturb the crystal arrangement and recombine the molecules, which will make the metal harder macroscopically). The transformer has the advantages of good broadband response and extremely low distortion. It has the same effect as the Maijingtu transformer. It is made of high-cost materials and its weight reaches 33KG. Such fine material selection, winding, and special freezing treatment The single-ended power can reach 5W, which is equivalent to 400 of the stone machine. If the huge thrust is powerful and demeanor, it still retains the smooth texture of a vacuum tube machine. It has an open and wide sound field, especially when listening to large-scale orchestral music.

wonderful. You can easily feel the hierarchical voices, the undulating dynamics in the music, the thick and full sound, the rich and strong low frequency, and the music is full of power and vitality.

Adjustable input sensitivity

The input sensitivity is adjustable in 0.85V and 1.7V, which can be adapted to the output level of different front-end equipment. The patented unique technique Unity Coupled Circuit has low distortion, widening frequency response, and extremely stable operation, which also helps to extend the life of the vacuum tube. Built on a unified combined circuit, combined with the old wheat to the home and extra large output cattle, plus two KT88, so that the MC75 can load as low as 2Ω impedance speakers, under 2, 4, 89 loads, the smallest sine wave is continuous The average output power is 75 watts, and the distortion is less than 0.5%. The previous generation was equipped with stepless input gain adjustment (0.5^2V), but the current generation is changed to two-speed Input Sensitivity (1.7V or 0.85V). Input Sensitivity can be selected for multimedia purposes. Generally, 1.7V is used for the preamplifier and 0.85V for the AV preamplifier/processor, depending on the specifications of the audio control.

New upgrade highlights, automatic adjustment of vacuum tube bias

One problem with the electronic vacuum tube machine is that the bias voltage of the vacuum tube needs to be adjusted. If the power tube is to be replaced, the bias adjustment is even more inevitable. The traditional bias voltage adjustment is followed by the meter to measure the value, and then use a screwdriver to turn the screw. Later, some manufacturers improved, built-in measurement circuit, the current bias status is displayed with the light signal or the screen value, it is more convenient to adjust the bias voltage. However, for many consumers, it is necessary to check the bias condition later, and slowly turn to the correct position after changing the tube. Knowing that adjusting the bias voltage requires heating the machine and running for at least half an hour, the tubes are all hot, and the bias voltage adjustment is accurate. From this point of view, it is still troublesome. Use a set of self-designed automatic bias voltage adjustment circuit, not only you use it for a long time, you don’t have to worry about the bias voltage running away, and it is more convenient to change the tube. What kind of tube you want to change, just replace it, and then turn on the 275 will adjust the bias to the correct value. This design is entirely from the perspective of consumers, making it more convenient to use, even if the first

Don’t worry about buying a tube machine. This technology was developed by the Taiwanese team after several months of research, while other 275s on the market do not have this function.

Rigorous craftsman

1:1 to one replica MC75 circuit

All manual one-to-one precision soldering by the Taiwanese fever team, all the soldering tin is imported from Germany ⅧBT soldering tin, each capacitor resistance connecting wire is selected and matched with MC75 before welding, the connecting circuit wire is made of 99.999 oxygen-free copper material, shielding Better to reduce the noise floor and reduce distortion, the overall distribution of the circuit is reasonable and orderly, and the neat and tidy circuit has good consistency and integrity for the good machine is the guarantee of the product and the guarantee of quality.