{"product_id":"3000w-british-arw-audio-isolation-transformer-with-american-standard-220v-110v-output-sockets","title":"3000W British ARW Audio Isolation Transformer with American Standard 220V 110V Output Sockets","description":"\u003cp\u003e\u003cb\u003e3000W British ARW Audio Isolation Transformer with American Standard 220V 110V Output Sockets\u003cbr\u003e\u003cbr\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e- 3000W isolated power supply with British transformer for ARW\u003cbr\u003e- Square copper wire is used to wind EI transformer\u003cbr\u003e- British transformer, EI transformer, is a high-end isolation transformer\u003cbr\u003e- The noise generated by the isolation transformer is less than 35dB\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Included:\u003c\/b\u003e\u003cbr\u003e- 1 x Isolation transformer\u003cbr\u003e\u003cfont color=\"#FF0000\"\u003e\u003cb\u003e\u003cbr\u003eNote:\u003cbr\u003e- Power cable is not included.\u003cbr\u003e\u003c\/b\u003e\u003c\/font\u003e\u003cbr\u003e\u003cb\u003ePackaging Details:\u003c\/b\u003e\u003cbr\u003e- G.W.: 43kg\u003cbr\u003e\u003cbr\u003eIts\r\n internal resistance is lower than that of a toroidal transformer (the \r\ninternal resistance of a 3000W toroidal transformer on the market is \r\n0.3-0.8 ohms). Its internal resistance is only 0.2 ohms!\u003cbr\u003e\u003cimg style=\"width: 750px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-01.jpg\"\u003e\u003cbr\u003e\u003cbr\u003eIts anti-interference ability is several times stronger than that of a toroidal transformer!\u003cbr\u003e\u003cimg style=\"width: 801px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-02.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 801px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-03.jpg\"\u003e\u003cbr\u003e\u003cbr\u003eThe isolation transformer itself has strong resistance to DC interference, so there is no need to add a DC removal circuit.\u003cbr\u003e\u003cimg style=\"width: 909px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-04.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eChoose a toroidal transformer or an EI transformer?\u003c\/b\u003e\u003cbr\u003eBecause\r\n toroidal transformer has no magnetic gap in core, the leakage of \r\nmagnetic field is very small, and the number of coil turns is small, so \r\nits internal resistance can be very low, the quiescent current is very \r\nlow, and the volume is small, and it is widely used!\u003cbr\u003e\u003cbr\u003eThere is a \r\nmagnetic gap in the core of EI transformer, and the leakage inductance \r\nis larger than that of toroidal transformer, and its efficiency is not \r\nas good as that of toroidal transformer. However, EI transformer has \r\nobvious advantages over toroidal transformers when it is used for for \r\nthe purpose of anti-interference isolation transformer.\u003cbr\u003e\u003cbr\u003e1. \r\nAnti-DC interference is the weakness of toroidal transformers, while \r\nanti-DC interference is the strength of EI transformers: DC interference\r\n occurs when the positive and negative waveforms of the mains \r\nelectricity waveform are asymmetrical. Even when there is DC 1V, more \r\nthan 2A bias current will be produced for 0.4ohm toroidal transformer. \u003cbr\u003e\u003cbr\u003eAfter\r\n superimposing the mains electricity, because the core of the toroidal \r\ntransformer has no magnetic gap, the core will enter the state of \r\nmagnetic saturation, so that the efficiency of the toroidal transformer \r\ndecreases, and it even cannot work. And the toroidal transformer will \r\nalso produce abnormal noise when a fuse is burned. In order to keep the \r\ncircuit working properly, as shown in the figure, the primary causes the\r\n DC removal circuit:\u003cbr\u003eA. After the primary of the toroidal transformer\r\n is added with a DC removal module, the internal resistance will \r\nincrease (with 3 bridge rectifiers and 1 diode, the current will drop by\r\n 0.85V).\u003cbr\u003eB. After having this DC removal module, it doesn't matter how thick the wall line in front of you is upgraded.\u003cbr\u003eC. The current passes through a diode nonlinear device, which deteriorates the sound, and your good wire cannot function.\u003cbr\u003e\u003cbr\u003eIf\r\n you have toroidal isolation transformer, you can try to get rid of a DC\r\n removal board, and the sound will become loose and natural. But when \r\nthe interference is stronger, the toroidal transformer will still \r\nproduce noise.\u003cbr\u003e\u003cbr\u003eEI transformer has magnetic gaps, and when DC \r\nvoltage generates current, the transformer will not be magnetically \r\nsaturated. EI transformer resits to DC interference!\u003cbr\u003e\u003cbr\u003e2. Anti-interference ability:\u003cbr\u003eSince\r\n the toroidal transformer core has no magnetic gap, the frequency \r\nbandwidth, the interference signal passes through the core, coupled to \r\nthe secondary! While the core of EI transformer has a magnetic gap, the \r\nfrequency band is small, the interference is attenuated in the leakage \r\ninductance, and its anti-interference ability is strong.\u003cbr\u003e\u003cbr\u003eToroidal\r\n transformers have poor anti-interference ability. Its input noise is \r\n375mV, and the output is 190mV. However, the British transformer has an \r\ninput noise of 375mV and an output of about 50mV.\u003cbr\u003e    \u003cbr\u003eThe primary\r\n stage of the toroidal isolation transformer is added with a DC removal \r\ncircuit, the internal resistance is greatly increased, and the \r\nanti-interference effect is not strong. After using it, many audiophiles\r\n find that when they first use it, the effect has improved \r\nsignificantly, but after using it for a long time, they find that the \r\nsound is too clear, the homophony of the instrument becomes less, it is \r\nnot user-friendly, and the sound is not lively. With the EI transformer,\r\n there is no isolated DC board and no output capacitors. After the \r\ncomparison, the noise is lower, the details are rich, the homophony of \r\nthe instrument is rich, natural, and the musicality is very good.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdvantages of British transformer:\u003c\/b\u003e\u003cbr\u003e-\r\n The internal resistance of the transformer is 0.2 ohms, which is lower \r\nthan the internal resistance (0.3-0.8 ohms) of 3000W toroidal \r\ntransformers commonly found in the market.\u003cbr\u003e- It uses square copper \r\nwires of 5.6 square millimeters to wind. The inductance, transformer and\r\n sound of the square copper wires are particularly good.\u003cbr\u003e- In order \r\nto maximize the current output, the transformer reduces the internal \r\nresistance, and the number of turns is designed to be less than normal, \r\nso that a large wire diameter can be used. This design depends on \r\nhigh-temperature resistant insulated wires.\u003cbr\u003e- In addition, if the \r\nsurface area ratio of square copper wire is 27% more than that of the \r\nround copper core (when the side length and diameter are the same), the \r\ncurrent will go to the surface, which is equivalent to the internal \r\nresistance of the copper core is smaller, and the system is better \r\nrestored.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWhat are the characteristics of isolation transformer and filter in terms of technical indicators?\u003c\/b\u003e\u003cbr\u003e\u003cimg style=\"width: 800.167px; height: 310.424px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-05.jpg\"\u003e\u003cbr\u003eAs\r\n pictured above, the filter does not have the ability to remove DC. It \r\nhas no suppression ability against common-mode interference from \r\n60Hz-9KHz. However, shielded EI transformer is able to remove DC and \r\n60Hz-9KHz common mode interference!\u003cbr\u003e\u003cbr\u003e\u003cb\u003eThe reasons to choose our isolation transformer:\u003c\/b\u003e\u003cbr\u003e1. This power supply does not add a DC removal board, relying on its own strong anti-DC ability!\u003cbr\u003e2. The power supply has a shielding layer. Grounded when installed, it will attenuate 0-1Mhz common-mode interference.\u003cbr\u003e3. This power supply adopts EI transformer, with magnetic gap, which can attenuate the interference of 9K-30M.\u003cbr\u003e4.\r\n The power supply controls the noise generated by the isolation \r\ntransformer to less than 35dB. We do not sell products over 35dB.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eOriginal British transformer:\u003c\/b\u003e\u003cbr\u003eSecond-hand\r\n British transformer is used. The system has a wide frequency response, \r\nless noise floor, a warm mid-range, a powerful low frequency, a thick \r\nsound, and rich overtones. The sound of the instrument will be clear and\r\n shiny, making it unforgettable for you to listen to!\u003cbr\u003e\u003cbr\u003e1. The \r\nproduct uses a second-hand original British transformer. We replace the \r\npower cord that came with it. Pure copper wire of the same size as the \r\noriginal wire is used.\u003cbr\u003e\u003cimg style=\"width: 750px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-06.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 750px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-07.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e2. Strong shock absorption and noise reduction:\u003cbr\u003e-\r\n An aluminum shell is used, the heat dissipation effect is good, it will\r\n not resonate with the transformer, and the vibration is small;\u003cbr\u003e- The\r\n shell is fully sealed and has no heat dissipation holes (to prevent \r\nhumming from coming out). Shock absorber adhesives applied to the inside\r\n of the housing to minimize humming.\u003cbr\u003e- Adding shock absorber when installing the transformer can greatly reduce the vibration of the casing!\u003cbr\u003e\u003cimg style=\"width: 750px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-08.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 750px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-09.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 800.167px; height: 600.125px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-10.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e3. The product has passed strict testing before shipment:\u003cbr\u003eEliminate\r\n the safety hazards caused by the second-hand transformer. Each \r\nisolation transformer has been tested for 1500V withstand voltage.\u003cbr\u003e\u003cbr\u003e4. Premium materials:\u003cbr\u003e- Original IG8300W\/RD\/RN receptacle for Cooper -196 cold treatment.\u003cbr\u003e-\r\n The socket is hospital grade. All contact points are high-grade brass. \r\nThe copper sheet at the contact points is larger than the general IG8300\r\n and is used in more quantities, providing safe conditions for the use \r\nof high current through\/low temperature work surfaces. Enthusiasts' \r\nevaluation: Its sound characteristics are strong in the full range of \r\nliveliness.\u003cbr\u003e\u003cbr\u003e5. Soft start and protection during shutdown:\u003cbr\u003e- \r\nThere will be 10 times the working current when the machine is turned \r\non. And it is easy to trip the air switch. Soft start allows the current\r\n to increase slowly. When the current increases to normal, the \r\npotentiometer will be short-circuited and it will be turned on directly \r\nto prevent the air switch from tripping and impacting the power grid;\u003cbr\u003e-\r\n When the power supply is turned off, the output will have a \r\nback-voltage of several hundred volts, and a piezo-resistor will absorb \r\nit to effectively protect the electrical appliance.\u003cbr\u003e\u003cimg style=\"width: 774px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-11.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e6. Input socket:\u003cbr\u003eThe\r\n best HIFI professional-grade socket is produced in Taiwan, with \r\nbalanced sound, atmosphere, thickness, stability, and outstanding \r\nlow-frequency elasticity. \u003cbr\u003e\u003cbr\u003e7. Power supply output:\u003cbr\u003eUS standard output sockets.\u003cbr\u003e\u003cbr\u003e8. Original cable for PRYSMIAN:\u003cbr\u003eCompared\r\n with other power cords, the sound performance for PRYSMIAN cable: pure \r\nthickness, gorgeous, good extension at both ends, dynamic sharpness, \r\nfirst-class control, and good sense of liveness! It is equivalent to \r\nupgrading the power cord of the whole system!\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNo-load Power Test:\u003c\/b\u003e\u003cbr\u003e\u003cimg style=\"width: 800.198px; height: 502.367px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-12.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 800.167px; height: 532.911px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/86970\/86889-13.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products, Audio Amplifer and Decoders","offers":[{"title":"Default Title","offer_id":41029026906161,"sku":"86890","price":1775.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/4790\/6353\/files\/1703212210-1.jpg?v=1780379555","url":"https:\/\/www.thanksbuyer.com\/ru\/products\/3000w-british-arw-audio-isolation-transformer-with-american-standard-220v-110v-output-sockets","provider":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products,  Audio Amplifer and Decoders","version":"1.0","type":"link"}