MARANTZ SA-247 STEREO POWER EQUALIZER AMPLIFIER | eBay
Graphic Equalizer Spectrum Analyzer Ampl/Mixer Marantz Sound United
Amazon.com: Marantz PM8006 Integrated Amplifier with New Electric Volume Control and Phono-EQ for Vinyl Playback | Connect Multiple Audio Sources | Flexible Configurations for More Power to Speakers : Electronics