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PIC32MX270F256D-50I/PT‎ programmed for the Digital Preamplifier/Crossover [0110725A.HEX] A 32-bit PIC microcontroller in a 44-pin SMD TQFP package programmed with the firmware for the Digital Preamplifier and Crossover (0110725A.HEX). Cat No SC7557. Price: AUD $20.00 1  Add to trolley In stock: yes (5 available). Estimated dispatch time: 1-3 days Related to: Project: Digital Preamp & Crossover (October 2025 [print issue] [online issue]) Project: Digital Preamp & Crossover, Pt2 (November 2025 [print issue] [online issue]) Other items relevant to these projects: Digital Preamplifier main PCB [01107251] ($30.00) Add to trolley Digital Preamplifier front panel control PCB [01107252] ($2.50) Add to trolley Digital Preamplifier power supply PCB [01107253] ($7.50) Add to trolley Firmware for the Digital Preamplifier/Crossover (Free) Add to trolley Digital Preamplifier/Crossover PCB patterns (PDF download) [01107251-3] (Free) Add to trolley 3D printing files for the Digital Preamplifier/Crossover (Free) Add to trolley Digital Preamplifier/Crossover case drilling diagrams (Free) Add to trolley