Enhance your audio experience with this high-performance Preamp, expertly designed using a 6J5 electronic tube and premium NE5532 operational amplifier for clear, rich sound reproduction. Featuring Bluetooth 4.2 connectivity (note: APTX codec not supported), this preamplifier delivers detailed and transparent audio output with minimal noise interference, making it an ideal choice for audiophiles and sound enthusiasts. Key Features: · Premium 6J5 Electronic Tube & NE5532 Chip: Combines classic tube warmth with modern precision, offering powerful and sweet sound performance. · High-Quality Capacitors: Equipped with a 470UF/25V main filter capacitor and a 1UF coupling capacitor to ensure stable signal filtering and smooth audio transitions. · Precision Chip Resistors & Superior PCB Quality: Utilizes high-precision chip resistors on a first-class printed circuit board for reliable and consistent performance. · Robust Printed Circuit Board Construction: Features a 1.6mm thick double-sided PCB with 2.0-ounce copper thickness and comprehensive tin-spraying to enhance current conductivity and durability. · Thoughtful Circuit Layout: Designed with a reasonable and aesthetically pleasing board layout that minimizes current noise for cleaner sound output. · Durable Gold-Plated Input/Output Interfaces: Gold-plated lotus pedestals provide long-lasting corrosion resistance and maintain high-quality signal transmission. · Intuitive Three-Knob Control Design: Allows precise adjustment of detail, transparency, immediacy, and richness, enabling you to easily tailor your sound from powerful to sweet tones. Specifications: · Product Name: Preamp · Material: Printed Circuit Board · Color Options: Black, Silver · Power Supply: DC 12V · Item Dimensions: 137 x 104 x 41 mm (5.39 x 4.09 x 1.61 in) · Package Dimensions: 250 x 200 x 70 mm (9.84 x 7.87 x 2.76 in) · Package Weight: 500g (1.10 lb) Package Includes: · 1 x Preamp This preamplifier combines advanced electronic components with meticulous craftsmanship to deliver exceptional audio clarity and dynamic range. Its compact size and durable construction make it a versatile addition to your audio setup, providing enhanced sound quality and user-friendly controls for an immersive listening experience.