Marantz STEREO 70s – Slimline 75W Stereo Receiver with 8K HDMI and HEOS
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Marantz STEREO 70s – Slimline 75W Stereo Receiver with 8K HDMI and HEOS
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Overview
Bring your music and television entertainment together with the Marantz STEREO 70s. This slimline receiver combines dedicated stereo amplification, HDMI connectivity, and wireless streaming in an elegant component designed to complement your living space.
Enjoy a favorite album, connect a turntable, or give television sound the presence of dedicated speakers. Marantz HDAM circuitry and Class A/B amplification provide the foundation for a versatile two-channel system.
Key Features
- Two powered channels with connections for two subwoofers
- Six HDMI inputs, including three 8K-compatible inputs
- HDMI ARC television connection
- HEOS streaming and compatible multiroom playback
- Moving Magnet phono input
- Speaker A/B connections
Complete Technical Specifications
Amplification and Audio
| Specification | Details |
|---|---|
| Configuration | Stereo with two subwoofer outputs |
| Powered Channels | 2 |
| Amplifier Topology | Discrete Class A/B |
| Output, 8 Ohms | 75W/channel, 20Hz–20kHz, 0.08% THD, 2 channels driven |
| Output, 6 Ohms | 100W/channel, 1kHz, 0.7% THD, 2 channels driven |
| Audio Circuitry | Marantz HDAM |
| Listening Features | Pure Direct, MDAX2 |
| Speaker Connections | A/B; four terminal pairs |
| Preamplifier Outputs | Stereo RCA plus two subwoofer outputs |
HDMI and Video
| Specification | Details |
|---|---|
| HDMI Inputs / Output | 6 / 1 |
| 8K-Compatible Inputs | 3 |
| Upscaling | HDMI 1080p/4K to 8K |
| HDR | HDR10, HDR10+, Dolby Vision, HLG, Dynamic HDR |
| TV Audio Return | ARC |
| Gaming | ALLM, VRR, Quick Frame Transport |
| Other Functions | HDCP 2.3, CEC, Auto Lip Sync, standby pass-through |
Power ratings reflect the stated measurement conditions. Marantz’s detailed specifications and manual identify ARC support.
Connections and Music Playback
| Specification | Details |
|---|---|
| Analog Inputs | 3 |
| Phono | Moving Magnet |
| Optical / Coaxial Inputs | 1 / 1 |
| Additional Analog Zone Output | 1 |
| USB | USB-A host playback |
| Tuner | AM/FM |
| Networking | Wi-Fi, Ethernet, Bluetooth |
| Wireless Playback | AirPlay 2 |
| Bluetooth Headphones | Transmission with volume control |
| Streaming Platform | HEOS |
| Services | Spotify Connect, TuneIn and supported HEOS services |
| Audio Files | MP3, WMA, AAC, FLAC, WAV, ALAC, DSD |
| Resolution | Compatible PCM up to 24-bit/192kHz; DSD 2.8/5.6MHz |
| Gapless Playback | FLAC, WAV, ALAC, DSD |
| Control | IP, web, Marantz app, IR flasher, remote bus |
| Trigger Output | None |
| Firmware Updates | Network / USB |
Physical and Electrical
| Specification | Details |
|---|---|
| US Finish | Black |
| Display | Porthole OLED |
| Remote | RC052SR |
| Dimensions, Antennas Horizontal (W × H × D) | 17.4 × 4.3 × 15.2 inches |
| Dimensions, Antennas Vertical (W × H × D) | 17.4 × 7.0 × 15.2 inches |
| Dimensions, Without Antennas (W × H × D) | 17.4 × 4.3 × 14.7 inches |
| Weight | 18.5 lbs |
| Power Consumption | 210W |
| Standby / CEC Standby | 0.2W / 0.5W |
| Network Standby | Below 2W |
| Convenience | Setup Assistant, Smart Select, ECO, sleep timer, auto-off |
What’s Included
Receiver, remote and batteries, AM/FM antennas, two detachable wireless antennas, wire labels, AC cord, and Quick Start Guide.
Important Notes
The STEREO 70s is a two-channel receiver; Speaker A/B terminals do not provide four independent amplifier channels. Speakers, powered subwoofers, and cables are sold separately. Streaming subscriptions may be required. Allow ventilation and cable clearance when installing in furniture.
Rediscover Your Favorites with The Grid HiFi
Create a system that makes music and movie nights equally inviting. The Grid HiFi can help you select matching speakers and configure an entertainment experience tailored to your room.
Contact The Grid HiFi for pricing, availability, and personalized recommendations: (713) 218-8120.
FAQs
Please read our FAQs page to find out more.
Do you price match?
Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.
Do you offer free shipping?
Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.
Where is your showroom?
We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.
Can I buy online without visiting the showroom?
Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.
Do you offer financing?
Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.
Do you install systems as well as sell equipment?
Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.
Do you provide support after installation?
Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.