The Marantz STEREO 70s is a slimline stereo receiver designed for users who want modern digital connectivity and HDMI switching without the complexity of a full multi-channel AV receiver. It focuses on two-channel audio while supporting contemporary video and streaming sources.
Intended for stereo hi-fi and TV-based systems, the STEREO 70s combines amplification, network streaming and HDMI connectivity in a compact chassis. This makes it suitable for living room systems where space efficiency and straightforward operation are priorities.
Positioned between traditional integrated amplifiers and AV receivers, the STEREO 70s is commonly chosen by users who want a modern stereo system with TV integration, while retaining a clear focus on two-channel music playback.
| Power Amplifier | |
| Number of Powered Channels | 2 |
| Power Output | 75 W (8 ohm, 20 Hz–20 kHz, 0.08% 2ch Drive)
100 W (6 ohm, 1 kHz, 0.7% 2ch Drive)
150 W (6 ohm, 1 kHz, 10% 1ch Drive) |
| Discrete Power Amplifier | Yes |
| Inputs/Outputs | |
| Video | HDMI In / Out - 6/1 |
| Audio | Analog In / Fixed - 3 in / 0 out
Phono (MM) In / Yes
Digital In: Optical / Coaxial - 1 / 1
Multi-Room Out: Analog / Digital - 1 / 1
Multichannel Pre-Amp Out: 2.2
Subwoofer Out: 2 |
| Other Features | Number of Speaker Terminals - 4
Speaker A/B
USB type A Audio (Host)
AM/FM Tuner |
| HDMI | |
| Total Inputs | 6 |
| 8K Support Inputs | 3 |
| HDMI Outputs | 1 |
| HDMI Upscaling | 1080p/4K to 8K |
| Max Resolution | 1080p/4K to 8K |
| Audio Return Channel | ARC |
| Video Dynamic Range | HDR / HLG / Dolby Vision / HDR10+ / Dynamic HDR |
| Other Features | HDCP 2.3 Support
ALLM (Auto Low Latency Mode) Pass-Through for Gaming
Variable Refresh Rate / Quick Frame Transport
HDMI Pass-through in Standby Mode
CEC
Auto LipSync |
| Performance Technologies | |
| Features | Hyper Dynamic Amplifier Modules (HDAM)
Pure Direct Mode
Gold-Plated RCA Terminals |
| Music File Support | |
| Lossy Formats | MP3 / WMA / AAC |
| Lossless Formats | FLAC HD 192/24, WAV 192/24, ALAC 192/31 |
| DSD Audio | 2.8MHz / 5.6MHz |
| Gapless Playback | FLAC, WAV, ALAC, DSD |
| Other Features | Compressed Audio Enhancer: MDAX2
Network Audio Sharing |
| Streaming Services | |
| Featured Services | HEOS® Multi-Room and Streaming
AirPlay2
Internet Radio: TuneIn
Spotify Connect
Pandora
SiriusXM
Amazon Music HD
TIDAL
Deezer
iHeart Radio
Napster
Soundcloud
Mood Mix
Roon |
| Network Connectivity | |
| Connectivity Features | Ethernet Ports
Wi-Fi
Bluetooth
Bluetooth Re-Transmit for Bluetooth Headphones (with volume control) |
| Smart Home Integration & Control | |
| Voice Assistant Compatibility | Alexa, Google Voice Assistant, Apple HomePod, JoshAi |
| Smart Device App (iOS/Android) | Marantz AVR App |
| Multi-Room Zones | 1 |
| Zone Audio Source | 2 Ch HDMI/OPT, 2 Ch Coax/Network, USB/Analog |
| Zone Audio Output | Pre-Out |
| Control Connectivity | IP Control, Web Control, App Control, HDMI Diagnostics |
| Other Features | HEOS Multi-Room Integrated
HEOS Link Compatibility: IR/IP
Zone HDMI Output from HDMI Source
IR Flasher In
Marantz Remote Bus |
| Maximum Dimensions (W x D x H) | Antenna, Horizontal: 17.4 x 15.2 x 4.3 in.
Antenna, Vertical: 17.4 x 15.2 x 7.0 in.
w/o Antenna: 17.4 x 14.7 x 4.3 in. |
| Weight | 18.5lbs |
