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Firmware and source code for the Low-Noise Stereo Preamplifier [0111111B.HEX] (previously 0111111A.HEX) PIC16 microcontroller firmware (HEX file) plus ASM source code for the Low-Noise Stereo Preamplifier project. This updated B version of the firmware solves the problem that the remote control section won't work without the input selector board plugged in. Cat No SC0973. Price: Free Files: 0111111B.zip (ZIP contains .hex and .asm files; 9.1KB) Related to: Project: Ultra-LD Stereo Preamplifier & Input Selector, Pt.1 (November 2011 [online issue]) Project: Ultra-LD Stereo Preamplifier & Input Selector, Pt.2 (December 2011 [online issue]) Project: Ultra low noise remote controlled stereo preamp, Pt.1 (March 2019 [print issue] [online issue]) Project: Ultra low noise remote controlled stereo preamp – Part 2 (April 2019 [print issue] [online issue]) Other items relevant to these projects: Low Noise Stereo Preamplifier with Tone Controls: Low-Noise Stereo Preamplifier PCB [01111119] ($25.00) Add to trolley Input Switching Module PCB for the Low Noise Preamplifier [01111112] ($15.00) Add to trolley Input Selection Pushbutton PCB for the Low Noise Preamplifier [01111113] ($5.00) Add to trolley Universal Voltage Regulator PCB [18103111] ($5.00) Add to trolley PIC16F88-I/P programmed for the Low-Noise Stereo Preamp with Six Input Selector [0111111M.HEX] ($15.00) Add to trolley PIC16F88-I/P programmed for the Low-Noise Stereo Preamp [0111111B.HEX] (previously 0111111A.HEX) ($15.00) Add to trolley Low-Noise Stereo Preamplifier PCB pattern (PDF download) [01111119] (Free) Add to trolley Low-Noise Stereo Preamplifier Input Switcher PCB pattern (PDF download) [01111112] (Free) Add to trolley Low-Noise Stereo Preamplifier Input Selector Pushbutton PCB pattern (PDF download) [01111113] (Free) Add to trolley Low Noise Stereo Preamplifier & Input Selector: Preamp & Remote Volume Control PCB for the Ultra-LD Mk3 [01111111] ($30.00) Add to trolley Low-Noise Stereo Preamplifier Main PCB pattern (PDF download) [01111111] (Free) Add to trolley Ultra low noise remote controlled stereo preamp – Part 2: Ultra-LD Mk3/Mk4 Amplifier Power Supply PCB [01109111] ($15.00) Add to trolley Ultra-LD Mk.3 Power Supply PCB pattern (PDF download) [01109111] (Free) Add to trolley Universal Voltage Regulator PCB pattern (PDF download) [18103111] (Free) Add to trolley