🎵 Tune into Excellence with Douk Audio! Easily adjust treble and bass for a personalized listening experience. Transform your audio with the warm, dynamic tones of vacuum tubes. Seamlessly connect via Bluetooth, USB, or RCA inputs. Enjoy lossless sound with APTX-HD Bluetooth technology. Aesthetic appeal with blue and orange lighting for a modern touch. Supports 32-300 ohm headphones 24bit 192KHz USB DAC Bluetooth 5.0 The Douk Audio P1 Vacuum Tube Bluetooth Preamplifier is a versatile audio device that enhances your listening experience with upgraded GE5654 tubes, multiple input options, and high-fidelity sound quality. It supports Bluetooth 5.0 with APTX-HD for lossless audio, features a USB DAC compatible with various systems, and offers customizable sound controls, all wrapped in a stylish design.