Dec 17, 2025
From the classic audio files: ad for the Marantz 4100 Quadradial control amplifier - 1972.
#marantz 4100#vintage stereo#vintage hifi#marantz preamplifiers#preamplifiers#4-channel equipment#audiophile#4-channel systems#marantz#vintage preamplifiers#marantz quadradial#4 channel control amplifiers#4 channel preamplifiers#quad sound#quadraphonic sound#quadraphonic equipment#marantz control amplifiers#control amplifiers#vintage control amplifiers#vintage marantz