Marantz Stereo 70S Network Stereo Receiver (OPEN BOX)

Marantz Stereo 70s Slimline 8K Stereo Receiver with HEOS—OPEN BOX

The Marantz Stereo 70s is a two-channel receiver that supplies 75 watts per channel while adding 8K HDMI switching, HEOS multi-room streaming, and a built-in phono stage—all in a chassis just 4.3 inches high. It brings high-fidelity sound and modern connectivity to rooms where a full-size component will not fit.

Fit High-Fidelity Sound into Limited Spaces

The slimline enclosure slides easily into media cabinets yet houses Class A/B amplification backed by Marantz HDAM modules. These discrete circuits result in a clean 10 Hz–100 kHz response at 75 W per channel into 8 Ω. 

• Four speaker terminals support A/B switching for two pairs of speakers.
• Twin subwoofer outputs let you build a 2.2 channel system with balanced low-frequency coverage.
• A 6.35 mm headphone jack offers late-night listening without adding an external amp.

8K HDMI Connectivity for Today’s TVs and Consoles

Six rear HDMI inputs—three rated for full 8K—allow direct hookup of streaming boxes, game consoles, or Blu-ray players. The single HDMI output supports eARC, passing lossless TV audio back to the receiver so you can hear broadcast, app, or disc content through your main speakers.

• HDR10, HDR10+, Dolby Vision, HLG, and Dynamic HDR maintain accurate contrast and color.
• ALLM, variable refresh rate, and quick frame transport reduce latency and tearing for smoother gaming.
• Built-in upscaling converts 1080p and 4K sources to 8K for compatible displays.

Whole-Home Music with HEOS Built-In

HEOS technology connects the Stereo 70s to compatible wireless speakers throughout your house. Stream high-resolution FLAC, WAV, ALAC, or DSD files over Wi-Fi. Use your favorite streaming platform: supports Spotify Connect, TIDAL, and many more. AirPlay 2 and Bluetooth connectivity to phones and tablets.

Ready for Vinyl, CD, and Digital Sources

A moving-magnet phono input brings turntables into the system without an external preamp, while three analog RCA inputs accommodate legacy components. Optical and coaxial digital inputs for TVs and audio components. The USB-A port allows you play music from a thumb drive. The receiver’s M-DAX function enhances the quality of compressed audio formats.

Frequently Asked Questions

• Can I watch 4K content on a non-8K TV?

  Absolutely. The HDMI 2.1 inputs are backward-compatible, and the receiver passes through 4K/60 and HDR signals unchanged to 4K displays.

• Does the phono input support moving-coil cartridges?

  No. The built-in phono stage is designed for moving-magnet (MM) cartridges. Moving-coil (MC) cartridges require an external step-up device or phono preamp.

• How do I stream to multiple rooms?

  Install the free HEOS app on iOS or Android, add compatible HEOS speakers or amplifiers, and group them with the Stereo 70s to play the same or different music in each zone.

Add the Marantz Stereo 70s to your cart to experience full-range stereo sound, 8K video switching, and whole-home streaming from one compact component. Prefer to audition in person? Visit Gibbys Electronic Supermarket and hear it for yourself.