Electronic Tube: Experience the classic warmth and richness of sound with our vacuum tube amplifier. Utilizing 6K4 electronic tubes, this amplifier offers both power amplification and voltage amplification, enhancing your audio with a unique, vintage character. Large Dynamic Range: Enjoy a sweet and soft sound with an expansive dynamic range that delivers a distinctive listening experience. The high-definition, lossless sound quality ensures that every note is clear and immersive, making your music come alive. Bluetooth 5.1 Chip: Equipped with the Qualcomm QCC3031 Bluetooth 5.1 chip, this tube amplifier supports the aptX HD protocol for faster and more stable wireless transmission. This cutting-edge technology brings HiFi sound quality to your wireless audio experience, ensuring seamless connectivity and superior sound. Combined Level Amplifier: Featuring AUX dual RCA input and a rear panel switch for manual switching, this amplifier offers versatile connectivity options. The design includes a 6K4 tube preamp and a 3116 post amplifier, providing a powerful and balanced audio output that caters to all your listening needs. Independent Adjustment Knob: Tailor your audio experience with the independent treble and bass adjustment knobs. This design allows you to customize the sound according to your personal preferences, ensuring that you can achieve the perfect balance for any genre or mood.