The permalloy step-up transformer is used as the core, the booster can amplify the audio voltage by 2 times, solving the problem of low sound, few details, and weak dynamics when listening to music with a mobile phone or computer connected to an amplifier. It adopts all-metal gold-plated socket, which has tight contact, fastening and durability. Frequency bandwidth 20-30KHZ, improve detail density, the nemesis of digital flavor code, passive pre-stage transformer audio signal booster.
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