Product Description Reference Accuphase C3850 Preamplifier Circuit with 3-Way Signal Input - DIY Kit Introduction: This preamplifier circuit is inspired by the renowned Accuphase C3850. Known for its outstanding sound quality, the C3850 preamplifier circuit is designed for those who seek to replicate and admire high-fidelity audio performance. When carefully assembled, this circuit outshines typical preamps, offering a sound that is loose, delicate, warm, and charming. The design utilizes op amps as the core amplifiers, enhanced with discrete components to increase open-loop gain. The dual feedback circuit for voltage and current minimizes distortion, providing a sound quality that rivals tube amplifiers. Key Features: Circuit Design: Inspired by Accuphase C3850, renowned for its superior sound quality. Amplification: Uses op amps as the basic amplifiers, with discrete components to enhance performance. Feedback Circuit: Voltage and current dual feedback to reduce distortion. Op Amps Included: 2 x NE5534 standard op amps. Technical Specifications: Input Voltage: AC 14V-0-14V to AC 18V-0-18V PCB Size: 155mm x 136mm Package Includes: DIY Kit: Includes all components for assembly and testing (soldering required). Note: This product is a DIY kit, meaning all components need to be soldered and tested by the user.