🔷 最高 AVレシーバー 2026

AV Receivers: The 14-Year Replacement Cycle Nobody Warns You About

"I've finally replaced my 14-year-old Denon AVR-790." Another reviewer: "My 30-year-old Yamaha receiver finally broke." A third: "26-year-old Sony was intermittently shutting down."

AV receivers aren't smartphones—you're buying a decade-plus commitment. Every feature decision compounds over years of nightly use. Choose wrong and you'll live with limitations for 10+ years. Choose right and you'll forget you even made a decision.

The Channel Count Deception: "7.2 OR Zone 2, Not Both"

Denon's AVR-S570BT at $449 advertises "7.2 channels" AND "powered Zone 2." One brand-switcher's discovery: "You can't have both simultaneously. Powered Zone 2 uses reassigned back speaker connections—system becomes 5.2."

If you want actual 7.2 channels WITH powered Zone 2, most new receivers require pre-amp Zone 2 output (meaning you buy an external amplifier for Zone 2). This hidden limitation shapes the entire purchasing decision. One reviewer's solution: "5.1 and powered Zone 2 fit my needs exactly."

Before you buy: Clarify whether you want maximum surround channels OR multi-room audio. The "7.2" spec doesn't guarantee both simultaneously.

The Dirac Live Revolution: Discovering Your Speakers Were Good All Along

Onkyo TX-RZ50 at $1,399 includes Dirac Live room correction out of the box (free—not subscription). One upgrader's revelation: "I realized my old speaker sets could have been this good after Dirac Live calibration with my personal touches on volume and crossover."

The room correction software analyzes your space's acoustics and adjusts output to compensate for room reflections, speaker placement, and furniture absorption. Dirac Live reportedly outperforms Audyssey (Denon's system) and AccuEQ (Onkyo's legacy software).

One detail: mobile app calibration works but is limited. Full computer software provides finer control. The provided calibration microphone works adequately; enthusiasts plan to upgrade to UMIK calibrated mics later.

The Blu-Ray vs Streaming Audio Quality Nobody Discusses

One Onkyo owner's update after testing physical Blu-ray discs: "Both ATMOS and DTS:X sounded AMAZING... demonstrated the '3D sound dome'... The same ATMOS content from Netflix, Max, Disney+ did not match."

The technical explanation: Blu-ray discs use lossless Dolby TrueHD and DTS-HD Master Audio. Streaming uses lossy compression. The difference in "dynamic range, loudness, details and clarity" becomes obvious on quality receivers.

The owner bought a 4K UHD player (Panasonic UB 820P-K) and is building a reference disc collection. Even 10+ year old Blu-rays sound amazing through upmixing. The $1,399 receiver revealed that streaming's convenience comes with audio quality sacrifice.

Implication: If you're spending $700+ on a receiver capable of revealing these differences, factor another $200-300 for a quality Blu-ray player to actually hear what the receiver can do.

The Temperature Management Revelation

One Denon AVR-S970H reviewer monitors cabinet temperature with remote sensors. Previous Onkyo ran 90-92°F consistently. New Denon: 80°F maximum at same volume levels. That 10-degree difference potentially adds years to component lifespan.

The heat reduction enabled removing the 4 computer cooling fans previously required. Why Denon runs cooler at same output remains unclear, but reliability-focused buyers should note this pattern.

The Onkyo Speaker Channel Routing Bug (Acknowledged in Manual)

One extensive Denon vs Onkyo comparison reveals disturbing detail: Onkyo TX-NR6100 plays surround channel signals through the 'back' surround speakers, leaving actual surround speakers quiet on discrete 5.1 content. "This is by design and acknowledged in the manual!"

For users who want discrete 5.1 playback (concert music videos, specific content), this makes Onkyo "inferior and unacceptable." Denon receivers correctly route surround channels to surround speakers.

The on-screen display compounds the problem by showing "5.1 input to 7.1 output" when only 5.1 speakers actually play. Onkyo thinks this is acceptable. Critical listeners disagree.

The Yamaha AVENTAGE 5th Foot: Not Marketing Nonsense

Yamaha's AVENTAGE line ($900-$3,125) adds a fifth stabilizing foot in the center—"designed and tested to improve sound through vibration reduction." One 10-year upgrader notes: "sounds like this first AVENTAGE model is slightly better with its parts and sound quality."

The AVENTAGE also includes 3-year warranty versus 2 years for RX models. For premium purchases meant to last 10-15 years, the extra warranty year and build quality improvements justify the AVENTAGE premium if budget allows.

The 2-Channel Stereo Purist Options: $198-$259

Sony STRDH190 at $198 and Onkyo TX-8220 at $259 strip surround processing entirely, focusing on stereo purity. Both include phono input for turntables, Bluetooth for streaming.

One audiophile's shock: "Budget 2-channel receiver... I was shocked by quality, sturdy construction, versatility and audiophile sound." The 100 dB signal-to-noise ratio delivers essentially zero distortion at normal listening (50-80 dB). With 9,773 reviews and 2,000 monthly purchases, the Sony dominates stereo-focused setups.

For vinyl enthusiasts and music-primary listeners, surround channels add complexity without benefit. The 2-channel receivers deliver superior stereo imaging and musicality at fraction of surround receiver cost.

The Gaming-Focused Features: HDMI 2.1 Specifications

Onkyo TX-NR6100 at $599 emphasizes gaming: 4K/120Hz HDR pass-through, VRR (Variable Refresh Rate eliminating lag/stutter), ALLM (Auto Low Latency Mode). THX Certified. One Klipsch owner's testimonial: "gets loud enough for me to always be happy and still have plenty of space to turn it up."

The gaming focus trades room correction sophistication for HDMI 2.1 gaming features. If Xbox Series X or PS5 gaming drives your setup, the VRR and ALLM specifications matter more than Dirac Live.

The HEOS Bluetooth Quirk Denon Won't Tell You

Multiple Denon reviews mention discovering: "Bluetooth transmitter isn't available for wireless headset use when MAIN Zone or Zone2 are sourced by HEOS." You can't Bluetooth stream music from Spotify through the receiver to wireless headphones.

Physical inputs (TV audio, Blu-ray, USB, CDs) CAN Bluetooth out. Just not HEOS streaming sources. One frustrated buyer called tech support—they confirmed this limitation. The workaround: stream from TV or Blu-ray player apps instead of receiver's HEOS.

The 8K Future-Proofing Question

One 10-year Yamaha veteran explains the wait: "My old receiver had 4K pass-through years before 4K became available. This time I waited for 8K pass-through so when 8K becomes a thing, this receiver stays relevant longer."

The 8K content availability problem: essentially zero consumer 8K content exists. But the 10-14 year ownership cycle means buying 8K capability today might matter in year 8-9 of ownership. Or it might not. The premium for 8K-capable receivers ($493+ vs $340 for 4K-only) is your future-proofing insurance.

The Physical Disc Renaissance

That Onkyo owner who rediscovered Blu-ray after years of streaming-only: "Last time I bought Blu-ray discs was 2015. Now I bought a 4K UHD player and am trying to get reference quality discs... even 'The Eagles - Hell Freezes Over (DVD, 1994)' sounds amazing!"

Quality receivers reveal streaming audio's limitations. If you're investing $700-1,400 in processing, the lossless audio from physical media justifies building a disc collection.

The Honest Buying Framework

Music-focused stereo ($198-$259): Sony STRDH190, Onkyo TX-8220. Phono input, superior stereo imaging, 100dB signal-to-noise ratio.

Entry surround ($340-$449): Yamaha RX-V385 (4K), Denon AVR-S570BT (8K). Good enough for most rooms, accept basic room correction.

Mid-range quality ($493-$699): Denon AVR-X1700H, Onkyo TX-NR6100, Yamaha RX-V4A. HEOS/MusicCast streaming, 8K support, better processing. Choose based on brand-specific quirks.

Premium room correction ($900-$1,399): Yamaha AVENTAGE A2A, Onkyo TX-RZ50 with Dirac Live, Denon X2800H with Audyssey XT. For serious home theater where room acoustics matter.

Flagship reference ($3,125): Yamaha RX-A8A. Surround:AI, Auro-3D, every feature. For enthusiasts comparing against $2,000+ competitors.

That reviewer who monitors cabinet temperature with sensors and adds cooling fans understands: reliability over 10-15 years depends on heat management. The Denon running 10°F cooler might outlast the Onkyo by years.

The honest truth? Most buyers would be satisfied with any receiver in their price range. The detailed reviewers spending paragraphs comparing Denon vs Onkyo channel routing are outliers. But if you're that outlier, those details matter enormously.