Features: Uses a transformer to reduce noise interference. Converts car audio high-frequency signals to low-frequency output with adjustable sensitivity. Transparent shell design with stylish appearance and fine craftsmanship. Designed for original car systems without audio output capability. Ideal for mainframes lacking low-frequency (RCA) output, such as cassette players, card readers, CD, VCD, or DVD units. Converts speaker-level high-frequency output to low-frequency (RCA) signal for connection to car amplifiers or subwoofers. Specification: Condition: Item Type: Audio Converter Color: As shown in picture Material: ABS Package List: 1 x Audio Converter Note: Please note that the new or old version of this product may be shipped randomly. Ensure you are comfortable with this before placing your order.