Gudanxuan 4500W US Standard High-Power Balanced Isolation Transformer for Audio Equipment

Description:
The output of the isolation transformer can be stepped down by 10V or 20V, and the output supports both balanced and unbalanced modes.

Features of Balanced Output:
* The induction electricity of the isolation transformer itself and the interference from transmitted induction electricity are eliminated by grounding the center tap of the transformer output;
* Interference caused by the charging and discharging of capacitors and inductors inside the user's electrical appliances, or interference generated during operation (similar to how the movement of a speaker cone can also generate induction electricity), is eliminated through the ground wire of the balanced output;
* Grounding the center tap of the balanced output ensures that the voltage to ground for both output lines is 110V, providing a stable voltage difference and suppressing ground noise.

FAQ: 
Q1: Some users have asked whether a balanced isolation transformer can eliminate mains electricity interference?

Answer: I strictly adhere to professional ethics and do not mislead consumer. Eliminating mains interference is the function of the isolation transformer itself and has nothing to do with whether the output is balanced or unbalanced. The ability to suppress interference depends on the isolation transformer itself. When measuring the interference value with instruments, the measured values are the same for both balanced and unbalanced outputs!

Q2: Why EI transformers (square core) have more advantages than toroidal transformers in audio isolation power supplies

Answer:
1. Using an EI transformer (square transformer) provides strong anti-interference capability. For the same mains interference, the output interference is greatly reduced after processing. Toroidal transformers are less ideal, with output interference values several times higher. (You can use a wideband interference tester from LHY Audio to test this.)
2. EI transformers (Square Transformers) have strong resistance to DC interference, while Toroidal transformers (Ring Transformers) have weak resistance: Everyone with junior high school physics knowledge understands that transformers block DC and pass AC. So why is a DC-blocking board still needed? The main reason is that toroidal transformers are prone to magnetic saturation. When encountering strong interference, they will lightly hum ("moo"), or heavily enter saturation, reducing output power and even burning fuses. This is why all toroidal transformers need DC-blocking boards, proving their poor resistance to DC interference! Adding a DC-blocking circuit greatly increases input internal resistance, which has a significant impact on sound! EI transformers (square transformers) have iron cores that are not completely closed; there are air gaps in the magnetic path. This greatly increases their magnetic flux capacity, preventing them from entering a saturation state where current increases significantly while magnetic flux remains unchanged!
3. Top-grade EI transformers have extremely low self-power consumption, comparable to toroidal transformers. Even with the backlight on, the total consumption is only 5.2W, which is no higher than that of a toroidal transformer!

Q3: What are the negative effects of adding a DC interference removal module in front of a toroidal transformer?

Answer:
A. After adding a DC removal module to the primary side of the toroidal transformer, the module itself causes a voltage drop and increases internal resistance. (With 3 bridge stacks, a single diode conduction creates a 0.8V drop).
B. With this DC removal module, upgrading your wall wiring to be thicker becomes meaningless; this module becomes the bottleneck.
C. Current passes through diodes, which are non-linear components, degrading the sound quality. Your expensive cables are also bottlenecked by this. If you have a toroidal isolation transformer, you can try bypassing the DC removal board. The sound will become relaxed, natural, and open. However, if the interference is slightly stronger, the transformer will start to hum!

Packing List:
* 1 x Isolation Transformer

Packaging Details:
* Package weight: 53kg

Note:
* Power cable is not included.