Refer-Marantz PM14A Fully Discrete True DC Pre-Amplifier Finished Board - DIY HiFi Audio Preamp

PM14A True DC Pre-Amplifier Board: Redefine Your HiFi Audio Experience As a flagship audio component, the Marantz PM14A pre-amplifier board is engineered for audiophiles who pursue pure sound quality and hands-on assembly fun.Why Choose Our PM14A Preamp Board? 1.Classic Circuit, Modern Craftsmanship Strictly follows the original Marantz PM14A circuit design, combined with upgraded discrete components to eliminate signal loss and distortion, bringing you the authentic warm sound of classic HiFi equipment. 2. All-in-One DIY Solution The included BOM list details every component specification, no extra parts needed. Compatible with TO-220/TO-92 component packages, easy to solder even for intermediate DIYers. 3.Stable & Reliable Performance 1.6mm thick PCB with 1oz copper layer ensures low resistance and fast heat dissipation; HASL lead process prevents oxidation, extending the board's service life by 50% compared to ordinary PCB boards.  Specifications PCB Thickness: 1.6mm Copper Thickness: 1oz Component Tolerance: ±5% (K30A transistors) Power Input: AC 22-0-22V/DC 28-0-28V (0.5A), BEC 24-0-24V (1A) Component Package: TO-92/TO-220/TO-126Ideal For HiFi audio enthusiasts, DIY audio builders, home theater upgraders, and anyone who wants to build a high-performance preamplifier with classic Marantz sound.

• Fully Discrete True DC Design - Adopts all-discrete component architecture without coupling capacitors, delivering pure, uncolored HiFi sound quality for home audio systems.
• Copy Marantz PM14A Circuit - 1:1 replication of classic PM14A preamp circuit with high-precision component matching (±5% tolerance for K30A transistors).
• Premium PCB Quality - 1.6mm thick PCB board with 1oz copper thickness and HASL lead process, ensuring excellent conductivity, heat dissipation and long-term durability.
• Flexible Power Supply Compatibility - Supports AC 22-0-22V (0.5A), DC 28-0-28V (0.5A) and BEC 24-0-24V (1A) input, perfect for DIY audio enthusiasts.
• Pre-assembled and ready to install, for easy DIY audio system upgrade.