Audeze MM-500 vs Sennheiser HD 820
Audeze MM-500 (#1, best overall) vs Sennheiser HD 820 (#4): in our Over-ear Headphones for Studio scoring the Audeze MM-500 totals 9.3/10 and the Sennheiser HD 820 8.6/10, the Audeze MM-500 leading on Accuracy and Value and the Sennheiser HD 820 on Comfort.
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Side by side
| Audeze MM-500 | Sennheiser HD 820 | |
|---|---|---|
| Price | $1699 | $2199 |
| Driver Size | 90mm planar magnetic | 56mm ring radiator |
| Impedance | 18Ω | 300Ω |
| Frequency Response | 10Hz-50kHz | 12Hz-43.8kHz |
| Weight | ~500g | 360g |
| Design | Open-back | Closed-back with Gorilla Glass reflector |
| Connector | Mini-XLR to ¼" TRS | — |
How they differ in real use
Built from our over ear studio scoring, each product's published specifications, and verified owner feedback — not hands-on testing.
Both the Audeze MM-500 and the Sennheiser HD 820 made our Top 5 Over-ear Headphones for Studio, at #1 (best overall) and #4. The professional's choice for mixing. Developed with Grammy-winning mixer Manny Marroquin and used on Kendrick Lamar's #1 album. Its key advantage is translation—mixes made on the MM-500 consistently translate well to speakers, earbuds, and car stereos. Open-back only: NOT for tracking/recording. A closed-back audiophile headphone with 56mm ring radiator drivers and Gorilla Glass reflector. Unlike the open-back models above, the HD 820's closed design provides isolation usable during tracking/recording. Its spacious soundstage reveals spatial issues, but the exaggerated staging can mislead mixers. At 300Ω and $2,199, this is a specialist tool, not a mixing workhorse.
We score over-ear headphones for studio on Accuracy (40%), Detail Resolution (25%), Comfort (15%), Build Quality (10%) and Value (10%). On that basis the Audeze MM-500 totals 9.3 out of 10 and the Sennheiser HD 820 8.6. The widest gap is Accuracy, where the Audeze MM-500 scores 10 against 8.5 for the Sennheiser HD 820 — flat, revealing frequency response. Value also separates them: 7 for the Audeze MM-500 versus 5 for the Sennheiser HD 820. The Sennheiser HD 820 claws back ground on Comfort.
On paper, the specifications that actually differ: Driver Size — 90mm planar magnetic on the Audeze MM-500 versus 56mm ring radiator on the Sennheiser HD 820; Impedance — 18Ω on the Audeze MM-500 versus 300Ω on the Sennheiser HD 820; Frequency Response — 10Hz-50kHz on the Audeze MM-500 versus 12Hz-43.8kHz on the Sennheiser HD 820; Weight — ~500g on the Audeze MM-500 versus 360g on the Sennheiser HD 820; Design — Open-back on the Audeze MM-500 versus Closed-back with Gorilla Glass reflector on the Sennheiser HD 820.
Pricing as of February 8, 2026: $1,699 for the Audeze MM-500 and $2,199 for the Sennheiser HD 820, a $500 difference in the Audeze MM-500's favor. Owners praise the Audeze MM-500 for 90mm planar magnetic drivers and exceptional mix translation to other playback systems; the most common complaint is very expensive at $1,699. Owners praise the Sennheiser HD 820 for 56mm ring radiator drivers with glass reflector technology and remarkably spacious soundstage for a closed-back; the most common complaint is requires quality amplification (300Ω).
Audeze MM-500
- 90mm planar magnetic drivers
- Exceptional mix translation to other playback systems
- Sub-bass accuracy rivals mastering rooms
- Developed with Grammy-winning mixer
- Very expensive at $1,699
- Heavy at ~500g
- Open-back only—NOT for tracking/recording (sound leaks into microphones)
Sennheiser HD 820
- 56mm ring radiator drivers with glass reflector technology
- Remarkably spacious soundstage for a closed-back
- Up to 26 dB passive isolation
- Includes balanced 4.4mm Pentaconn cable
- Requires quality amplification (300Ω)
- Very expensive
- Heavier at 360g
Which should you buy?
The Audeze MM-500 is the better fit for professional mixing engineers and mastering engineers — it is the higher-scoring pick here, chiefly for Accuracy and Value. The Sennheiser HD 820 is the better fit for audiophiles needing isolation and critical listeners with quality amps, and the stronger choice if Comfort matters more to you than the overall score. Since the Audeze MM-500 is both the higher scorer and $500 cheaper, the Sennheiser HD 820 only makes sense for audiophiles needing isolation. The Audeze MM-500 is a poor fit for tracking/recording sessions (open-back leaks sound); the Sennheiser HD 820 is a poor fit for bass lovers.
Choose the Audeze MM-500 if
- Professional mixing engineers
- Mastering engineers
- High-end home studios
Skip it if
- Tracking/recording sessions (open-back leaks sound)
- Budget studios
Choose the Sennheiser HD 820 if
- Audiophiles needing isolation
- Critical listeners with quality amps
- Those wanting closed-back without sacrificing soundstage
Skip it if
- Bass lovers
- Those without amplification
Common questions
Is the Audeze MM-500 better than the Sennheiser HD 820?
In our Over-ear Headphones for Studio ranking the Audeze MM-500 scores higher overall, 9.3 to 8.6, with the biggest advantage in Accuracy. The Sennheiser HD 820 is stronger on Comfort, so it is the better pick if that matters most to you.
How much more does the Sennheiser HD 820 cost than the Audeze MM-500?
$500 more as of February 8, 2026: $2,199 for the Sennheiser HD 820 against $1,699 for the Audeze MM-500. Prices move, so the merchant page shows the current figure.
What is the main difference between the Audeze MM-500 and the Sennheiser HD 820?
The headline spec difference is Driver Size: 90mm planar magnetic on the Audeze MM-500 versus 56mm ring radiator on the Sennheiser HD 820. In use, the gap that matters most is Accuracy (10 vs 8.5 in our scoring): flat, revealing frequency response.