Product highlights
Digital and streaming music options:
- built-in Wi-Fi for listening to music from a networked PC, free internet radio, and music services
- built-in HEOS technology wirelessly connects compatible HEOS components for whole home audio
- includes support for Pandora®, SiriusXM, and Spotify® (subscription required for some services)
- free HEOS app offers easy Wi-Fi control, settings adjustments, and music selection and playback
- works with Amazon Alexa and Google Assistant voice controllers
- Apple AirPlay 2 lets you stream directly from an iPhone® or iPad® and ask Siri to play Apple Music
- supports multi-room audio with compatible wireless speakers
- built-in Bluetooth for wireless music listening with smartphones, tablets, and compatible computers
- Bluetooth transmission for sending audio from the receiver to Bluetooth-enabled headphones
- play audio through Bluetooth headphones only, or through Bluetooth headphones and connected speakers simultaneously
- plays high-resolution digital music files via USB storage device or a networked computer (PCM up to 24-bit/192kHz resolution; DSD up to 5.6 MHz)
- works as a Roon player (requires subscription and Roon Core running on your network)
- Roon Core is media server software that runs on your computer, NAS drive, or other compatible hardware
Multi-room audio:
- stereo RCA line-level audio output for 2nd zone
- HDMI inputs can only be played in Zone 2 if also selected for main listening room
HDMI features:
- HDMI 2.1 audio/video switching: 6 in, 1 out
- 3 inputs and 1 output support 8K/60Hz and 4K/120Hz video
- all inputs and outputs support 4K/60Hz video
- HDCP 2.3 technology ensures compatibility with 4K Ultra HD sources and TVs
- supports HDR10, HDR10+, Dolby Vision, HLG, and Dynamic HDR
- supports ARC (Audio Return Channel) for passing audio signals to the receiver from your TV
- Dolby Digital and DTS surround not supported; TV must be set to output 2-channel PCM
- upscales 1080p and 4K/60Hz video signals to Ultra HD (up to 8K)
- gaming-optimized video processing technologies for a smooth, lag-free gaming experience
- Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and Quick Frame Transport (QFT) reduce or eliminate lag and frame tearing
Other connections:
- digital audio inputs: 1 optical and 1 coaxial
- 3 analog stereo RCA line-level audio inputs
- MM (moving magnet) phono input for connecting a turntable
- preamp output for connecting to an external stereo power amp
- rear-panel USB port for audio playback from USB flash drives
- A and B speaker output pairs
- 2 mono RCA outputs for connecting powered subwoofers
- Ethernet port for wired network connection
- IR input for use with external controllers
- 1/4" headphone output
- detachable power cord
General features:
- free Marantz remote app lets you use your Apple or Android™ device as a Wi-Fi remote
- Setup Assistant guides you through the initial connection process and settings
- intuitive, full-color on-screen guide
- Video Select lets you listen to music while watching video from a different source
- HDMI standby pass-through allows HDMI switching without powering up receiver
- gold-plated RCA terminals
- sleep timer
- AM/FM tuner
- remote control
- 17-3/8"W x 4-3/16"H x 16-1/16"D (7"H with Wi-Fi antennas raised)
- weight: 18.5 lbs.
- warranty: 5 years
What's in the box
- Stereo receiver
- 6' AC power cord
- Remote control (RC052SR)
- 2 "AAA" batteries
- 2 WiFi/BT antennas
- FM wire antenna
- AM loop antenna
- Quick Start Guide
- Warranty Information
- Safety Instructions
- Notes on radio
- Heos brochure
About this item
Written by Crutchfield's Athena H.
Many options packed into one slim receiver
It's always exciting when Marantz releases new receivers, and this slimline stereo model is no exception. It's got a little something for everyone in a tidy, space-saving form-factor — like high-resolution audio playback from a USB thumb drive, optical and coaxial inputs for your high-performance streamer or CD player, and a phono input for vinyl afficionados. And with the receiver's built-in HEOS streaming platform, you can explore streaming music sources to rediscover old favorites or to delve into new genres.
Add TV and gaming sound to your setup
The Stereo 70s features six 4K/60Hz HDMI inputs (three that are 8K and 4K/120Hz compatible) and one 4K/8K ARC HDMI output, so you can use it as the hub of a sweet two-channel audio/video setup. Plug in a game console, Apple TV or Roku, and a Blu-ray player in your living room or den, hook up your favorite pair of stereo speakers, and suddenly you've got waay better sound than your TV's built-in speakers could ever give you.
Stream your music with HEOS
Built-in HEOS technology lets you easily play a wide range of digital music — from your personal library, internet radio stations, and popular streaming services like Pandora®, Spotify®, and TIDAL. Apple AirPlay 2 means you can stream audio directly from your iPhone®, iPad®, or Mac® computer. That includes soundtracks from YouTube™ videos and Netflix movies. It will also show up in your player list if you're using Roon (subscription required).
And this receiver can be easily integrated into a wireless multi-room audio system. Stream music to HEOS wireless speakers and components in different rooms, and control each room's sound independently with the free HEOS app. The app lets you control playback, browse music sources, and select which rooms you want to use. Play the same music throughout your home, or listen to something different in each room.