The Sony STR-AZ7000ES and Onkyo TX-RZ70 are high-end home theater receivers that provide excellent sound and video performance, but they each bring their unique strengths to the table.

Here’s a detailed comparison of their power systems, video, audio, and feature sets:

Power Transformer

• Sony STR-AZ7000ES: This receiver is designed with premium sound quality in mind. The power transformer in the STR-AZ7000ES is robust, delivering 11 channels of audio processing with high efficiency. Sony uses a custom-designed transformer to enhance its high-current capabilities, offering a clean, dynamic sound that can support even the most power-hungry speakers.
• Onkyo TX-RZ70: Onkyo has also invested in delivering strong power, with a similarly high-output transformer system. The TX-RZ70 boasts an 11.2-channel amplifier, delivering solid audio performance, especially in larger rooms, with advanced Dynamic Audio Amplification to minimize distortion and maximize clarity.

Audio Features

• Sony STR-AZ7000ES:
  • Offers 13.2 channels of audio for immersive surround sound setups.
  • Advanced DSEE Ultimate (Digital Sound Enhancement Engine) upscales compressed audio files to near high-resolution quality.
  • Supports Dolby Atmos and DTS:X, ensuring a cinema-like surround sound experience.
  • Uses Direct Stream Digital (DSD) for higher fidelity audio, making it ideal for audiophiles.
• Onkyo TX-RZ70:
  • Features 11.2 channels of audio with a focus on THX processing for professional-level sound.
  • Audyssey MultEQ XT32 calibration system allows for optimized sound based on your room’s acoustics.
  • Offers support for Dolby Atmos and DTS:X as well, but it also includes unique features like Audyssey Dynamic EQ for better bass management and clearer dialogue.

Video Features

• Sony STR-AZ7000ES:
  • Handles 8K video pass-through, with support for HDR10, Dolby Vision, and HLG (Hybrid Log Gamma).
  • HDMI 2.1 ensures compatibility with high-end gaming and streaming equipment, offering smooth, lag-free gaming with Auto Low Latency Mode (ALLM) and Variable Refresh Rate (VRR).
  • eARC support for high-quality audio return, particularly useful for modern sound systems.
• Onkyo TX-RZ70:
  • Also supports 8K video pass-through, and includes all the major HDR formats, including HDR10+.
  • Features QMS (Quick Media Switching) to reduce video switching times, which is excellent for multi-source setups.
  • Supports advanced video signal upscaling to 8k.

Calibration and Tuning

• Sony STR-AZ7000ES: The D.C.A.C. IX calibration system (Digital Cinema Auto Calibration) ensures optimal sound based on room acoustics.
• Onkyo TX-RZ70: Features Dirac Live room correction, which is highly regarded for its precision and ability to adjust bass and speaker positions for enhanced accuracy.

Connectivity

• Both systems offer comprehensive connectivity with Wi-Fi, Bluetooth, and AirPlay 2 support. They also feature HDMI 2.1 inputs, with 8K pass-through capabilities. However, the Sony STR-AZ7000ES offers more HDMI inputs, making it more adaptable for larger setups.

Final Thoughts

The Sony STR-AZ7000ES shines with its slightly more powerful 13.2-channel configuration, sophisticated DSEE Ultimate audio enhancement, and future-proofing for 8K video. It’s an ideal choice for audiophiles and home theater enthusiasts looking for top-tier audio and visual experiences.

On the other hand, the Onkyo TX-RZ70 focuses on deep sound quality with its THX-certified processing and Audyssey calibration, making it great for those seeking a high-impact, immersive sound experience in larger rooms. It also excels in video features like HDR10+ and QMS.

Both receivers cater to high-end users, but the choice between them depends on your priority—whether it’s audio fidelity and room customization (Onkyo) or video performance and a slightly higher channel count (Sony).