This is a High Quality Sony TA-E77ESD Stereo Control Amplifier. IT features Digital Sampling Frequency, Tone control, Adjustable Turnover, Subsonic filter, 1/4" Headphone port, and Simulated Wood Cabinet sides.
The STR-DN840 network A/V receiver features 7.2 channels and 150 watts of power. Additional features include 4K resolution pass-through, 6 HDMI inputs and a graphical interface with easy setup guide. This receiver is the ultimate high resolution sound stage for your music, Blu-ray movies, games and more.
This is a high quality Yamaha A-25 Stereo Amplifier. It features Tone Control, Loudness Feature, Subsonic Filter, and 1/4" Headphones Port.