Marantz STEREO 70s - Slimline Stereo Amplifier
Marantz STEREO 70s - Slimline Stereo Amplifier
$1,200.00
Why You'll Love It.
Dylan CraneBRAND MANAGER
The Marantz STEREO 70s is a slimline stereo receiver that delivers 75W per channel of refined Class A/B power with Marantz HDAM tuning for musical, detailed sound. It’s an ideal TV-and-music hub with 6 HDMI inputs, 8K support, ARC, and gaming features like ALLM and VRR. Stream effortlessly using HEOS Built-in, AirPlay 2, Bluetooth, and popular music services, or enjoy hi-res playback up to 192kHz/24-bit and DSD. With an MM phono input, two subwoofer outputs, and flexible speaker connectivity, it’s built for modern hi-fi systems in a space-saving design.
Technical Specifications
75W per channel of Class A/B power for true hi-fi dynamics
The STEREO 70s delivers 75W per channel into 8 ohms across the full audio band, providing the headroom and control needed for clean stereo imaging, impactful transients, and satisfying volume without strain.
Marantz Sound Master tuning with HDAM for a refined, musical presentation
Custom component choices and Marantz HDAM technology help preserve detail and realism, producing a sound that’s articulate and engaging for long listening sessions—whether you’re streaming, spinning vinyl, or watching a concert film.
Modern HDMI switching for TV, movies, and next-gen gaming
With six HDMI inputs, ARC, support for HDR formats (including Dolby Vision and HDR10+), and gaming-friendly features like ALLM and VRR, it acts as a clean control center for a minimalist two-channel entertainment system.
HEOS multi-room streaming plus broad device compatibility
HEOS Built-in makes it easy to stream music services and sync audio across compatible rooms, while AirPlay 2 and Bluetooth expand everyday playback options for Apple devices, phones, tablets, and guests.
Hi-res file playback for listeners who want more than standard streaming quality
Support for FLAC/WAV/ALAC up to 192/24, plus DSD (2.8/5.6 MHz) and gapless playback, keeps albums and live recordings flowing naturally with improved resolution and nuance.
System flexibility for vinyl, bass management, and multi-speaker setups
A built-in MM phono input welcomes turntables, dual subwoofer outputs help build fuller low end, and speaker A/B terminals make it easy to switch or expand to additional speakers as your system grows.
Reviews
Product Details
Marantz STEREO 70s Slimline Amplifier
The Marantz STEREO 70s is a modern, slimline stereo receiver that blends Marantz’s iconic design and “Most Musical Sound” tuning with today’s must-have connectivity. Delivering 75 watts per channel (8 ohms) with a Class A/B amplifier design and HDAM circuitry, it brings rich, detailed stereo performance to music lovers while doubling as a streamlined hub for TV, gaming, and streaming. With 6 HDMI inputs (including 8K support on 3 inputs), ARC for easy TV audio return, and 8K upscaling, it’s built to anchor an elegant two-channel home cinema setup—without the size of a full AVR. Add HEOS Built-in, AirPlay 2, Bluetooth, and broad hi-res file support (up to 192kHz/24-bit and DSD), and you have an all-in-one receiver that’s equally at home with vinyl, streaming, and big-screen entertainment. The Marantz STEREO 70s is part of ListenUp's Marantz Amplifiers Collection.
What It's Good At:
- High-performance stereo sound in a compact chassis that fits tight cabinets and modern living spaces
- TV + gaming centerpiece with 8K HDMI switching, ARC, ALLM, VRR, and Quick Frame Transport support
- Whole-home music made simple with HEOS multi-room streaming and easy control from your phone/tablet
- Hi-res playback with clarity and depth (192/24 and DSD support) for more lifelike listening
- Vinyl-ready listening with a built-in MM phono input and clean analog connectivity
- Bigger bass and better system flexibility with support for two subwoofers, speaker A/B, and 2.2 preamp outputs
Marantz STEREO 70s Full Specifications:
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Power Amplifier
- Number of Powered Channels: 2
- Power Output (8 ohm, 20 Hz - 20 kHz, 0.08% 2ch Drive): 75 W
- Power Output (6 ohm, 1 kHz, 0.7% 2ch Drive): 100 W
- Power Output (6 ohm, 1 kHz, 10% 1ch Drive): 150 W
- Discrete Power Amplifier: Yes
- Amplifier Topology: Class A/B
-
Inputs Outputs
- HDMI In / Out: 6 / 1
- Analog In / Fixed Level Out: 3 in / out
- Phono (MM) In: Yes
- Digital In: Optical / Coaxial: 1 / 1
- Multi-Room Out: analog / digital: 1 / 0
- Multichannel Preamp Out: 2.2
- Subwoofer Out: 2
- Number of Speaker Terminals: 4
- Speaker A / B: Yes
- USB Audio: USB A (Host)
- AM/FM Tuner: Yes
-
Multichannel Surround Technologies
- Max Number of Processing (Preamp) Channels: 2,1
-
HDMI
- Total HDMI Inputs / No. Support 8K: 6 / 3
- HDCP2.3 support: Yes
- HDMI Outputs: Main / Zone: 1 / 0
- HDMI Upscaling: 1080P/4K to 8K
- Audio Return Channel: ARC
- Video Dynamic Range: HDR / HLG / Dolby Vision / HDR10+ / Dynamic HDR
- ALLM (Auto Low Latency Mode) Pass-through for gaming: Yes
- Variable Refresh Rate / Quick Frame Transport: Yes / Yes
- HDMI Pass-Through in Standby Mode: Yes
-
Performance Technologies
- Pure Direct Mode: Yes
- Gold Plated RCA Terminals: Yes
- Hyper Dynamic Amplifier Modules (HDAM): Yes
-
Music File Support
- Lossy Formats: MP3 / WMA / AAC
- Lossless formats: FLAC HD 192/24 / WAV 192/24 / ALAC 192/24
- DSD Audio: 2.8 MHz / 5.6MHz
- Gapless Playback: FLAC, WAV, ALAC, DSD
- Compressed Audio Enhancer: MDAX2: Yes
- Network Audio Sharing: Yes
-
Streaming Services
- HEOS Multi-room and Streaming: Yes
- AirPlay Audio Streaming: AirPlay2
- Internet Radio: TuneIn
- Spotify*: Spotify Connect
- Other Streaming Services*: Amazon Music HD/Amazon Music / TIDAL / Deezer / iHeart Radio / Napster / Soundcloud / Mood Mix
- Roon tested: Yes
- Pandora: Yes
- SiriusXM: Yes
-
Network Connectivity
- Ethernet Ports: Yes
- Bluetooth Re-transmit for Bluetooth headphones: Yes (with volume control)
- Wi-Fi: Yes
- Bluetooth: Yes
-
Smart Home Integration and Control
- Voice Assistant Compatibility: Alexa / Google Voice Assistant / Apple HomePod / JoshAi
- App for Smart Phones & Tablets (iOS & Android): Marantz AVR App
- HEOS Multi-Room Integrated: Yes
- HEOS Link Compatibility: IR/ IP: Yes / Yes
- Multi-Room zones: 1
- Zone Audio Source: HDMI / Opt, Coax / Network, USB / Analog 2 Ch / 2Ch / Yes / Yes
- Zone Audio Output: Speaker / Preout: No/Yes
- HDMI Diagnostics: Yes
-
Others
- Front Display: port hole OLED
- GUI Languages: English, Spanish, French
- Setup Assistant: Yes
- Smart Select on Remote: Yes
- Firmware Update by Network / USB: Yes / Yes
- ECO Mode: Yes
- Auto Power off: Yes
- Sleep Timer: Yes
-
General
- System Remote Control: RC-052SR
- Power Consumption in W: 210
- Standby Consumption in W: 0.2
- CEC Standby Consumption in W: 0.5
- Network Standby Consumption in W: Less than 2.0
- Maximum Dimensions (w/o Antenna) (W x D x H) in inches: 17.4 x 14.7 x 4.3
- What’s in the box: Main unit, remote control, batteries, AM/FM antennas, wire labels, quick start guide, 2 External Detachable Antenna, AC cord
- UPC code: 747192140267
Marantz STEREO 70s Q&A:
- Is the Marantz STEREO 70s a true 2-channel receiver or a surround AVR?
- It’s a 2-channel stereo receiver with stereo-focused amplification, plus AVR-like conveniences such as HDMI switching, ARC, on-screen setup support, and flexible bass options.
- How many HDMI devices can I connect, and does it support 8K?
- You can connect up to 6 HDMI sources and output to 1 HDMI display, with 8K support on 3 HDMI inputs and 8K upscaling available for compatible content.
- Can I connect my TV with a single cable for audio?
- Yes. The receiver supports ARC (Audio Return Channel) so your TV can send audio back to the STEREO 70s over HDMI for cleaner wiring and simpler control.
- Does it work with streaming and multi-room audio?
- Yes. It has HEOS multi-room streaming, plus AirPlay 2, Bluetooth, Wi-Fi, Ethernet, and support for popular services including Spotify Connect and more.
- Is it good for gaming?
- It supports gaming-friendly HDMI features like ALLM, Variable Refresh Rate (VRR), and Quick Frame Transport to help keep gameplay responsive and smooth on compatible setups.
- Can I connect a turntable directly?
- Yes. It includes a built-in MM phono input, making it easy to connect a moving-magnet turntable without a separate phono preamp.
- Can I run two subwoofers?
- Yes. There are two subwoofer outputs, which can help deliver more even, powerful bass in a two-channel or TV-based setup.
- Can I use two pairs of speakers (Speaker A/B)?
- Yes. It supports Speaker A/B switching with 4 speaker terminals, letting you run two speaker pairs (or switch between zones depending on your layout).
Marantz STEREO 70s Downloads:
Marantz Stereo 70s Info Sheet
Marantz Stereo 70s Owner's Manual
Marantz STEREO 70s - Slimline Stereo Amplifier Specifications
Audio
- Phono input: Yes
Connectivity
- Bluetooth: Yes
- Apple air play: Yes
- Internet music streaming: Yes
Inputs & Outputs
- Number of hdmi inputs: 6
