Sennheiser HD 650 vs Sennheiser HD 660S2

Q: Which is better, Sennheiser HD 650 or Sennheiser HD 660S2?

Based on 6,705 Reddit comments, Sennheiser HD 650 has a slight edge with 85% positive sentiment vs Sennheiser HD 660S2's 80%. The difference is small, so both are solid choices.

Q: Should I buy Sennheiser HD 650 or Sennheiser HD 660S2?

Both have similar approval ratings (85% vs 80%), so focus on specific features, pricing, and what matters most to you.

Q: What do Redditors love about Sennheiser HD 650?

Reddit users highlight: Warmer than 600. Still reference-ish. Great value. With 3,900 mentions and 85% approval, it's a well-regarded choice in the community.

Q: What do Redditors say about Sennheiser HD 660S2?

Reddit users highlight: Latest HD6X0. Improved bass. Refined tuning. With 2,805 mentions and 80% approval, it remains a popular alternative.

Q: How many Reddit reviews were analyzed?

This comparison analyzed 6,705 Reddit comments: 3,900 about Sennheiser HD 650 and 2,805 about Sennheiser HD 660S2. Data was sourced from headphones community discussions.

Q: How accurate are these ratings?

Our sentiment analysis is approximately 80-85% accurate compared to manual review. Well-discussed products with many mentions tend to have more reliable scores than niche items with fewer data points.

Q: Why trust Reddit over professional reviews?

Reddit users bought products with their own money and have no incentive to mislead. You're seeing hundreds of real opinions across different use cases, not just one reviewer's take. This crowdsourced approach surfaces both common praise and recurring complaints.

106 facts in comparison

Based on 3,249 Reddit opinions. Close race—HD 650Sennheiser HD 650 edges ahead.

3.2K opinions

HD 650 leads by 5pts

Reddit's Pick

85%

A-

Based on

3,900 Redditors

Winner

Sennheiser HD 650

~$354

1,777 opinions

tldr; HD600's warmer sibling. Slightly more bass, same magic. Pick your flavor.

Check prices

80%

B+

Based on

2,805 Redditors

Sennheiser HD 660S2

~$424.95

1,472 opinions

tldr; 660S revised. Better bass, refined sound. The current HD6X0 family pick for new buyers.

Check prices

🎵SOU

😌COM

💰VAL

🔧BUI

⚡FEA

Points

Score by Category

Sound Quality

69%75%

Comfort

70%70%

Value

70%22%

Build Quality

84%93%

Features

44%0%

Why is Sennheiser HD 660S2 better than Sennheiser HD 650?

Better sound quality (75% vs 69%)
Better bass (79% vs 44%)
Better build quality (93% vs 84%)
Latest HD6X0
Improved bass
Refined tuning

Based on 6,705 Reddit opinions

Slight Edge

Reddit prefers the HD 650Sennheiser HD 650

Winning by 5 points (85% vs 80%)

Better value

Warmer than 600

Still reference-ish

High confidence (6,705 mentions)

💬Reddit Sentiment

Based on 6,705 Reddit mentions

Overall Rating

HD 650

8.5/10

3,900 mentions

HD 660S2

8.0/10

2,805 mentions

SOUND QUALITY

HD 6506.9/10

HD 660S27.5/10

BASS

HD 6504.4/10

HD 660S27.9/10

VALUE

HD 6507.0/10

HD 660S22.2/10

BUILD QUALITY

HD 6508.4/10

HD 660S29.3/10

COMFORT

HD 6507.0/10

HD 660S27.0/10

FEATURES

HD 6504.4/10

HD 660S20.0/10

⚔️

Head to Head

Topic	HD 650	HD 660S2
Sound Quality	69%	75%
Bass	44%	79%
Value	70%	22%
Build Quality	84%	93%
Comfort	70%	70%
Features	44%	0%

Category Wins

HD 650: 2|HD 660S2: 3

Head to Head

HD 650: 2|HD 660S2: 3

Sound QualityHD 660S2

HD 65069%

HD 660S275%

BassHD 660S2

HD 65044%

HD 660S279%

ValueHD 650

HD 65070%

HD 660S222%

Build QualityHD 660S2

HD 65084%

HD 660S293%

Comfort

HD 65070%

HD 660S270%

FeaturesHD 650

HD 65044%

HD 660S20%

HD 650

85%

80%

HD 660S2

HD 65085%

HD 660S280%

HD 650 wins by 5 points

Key Specs

Spec	Sennheiser HD 650	Sennheiser HD 660S2
Transducer Principle	Dynamic, open	Dynamic, open
Impedance	300 ohms	300 ohms
Frequency Response	10-41,000 Hz	8-41,500 Hz (-10 dB)
Sound Pressure Level	103 dB (1 V)	104 dB (1 kHz, 1 Vrms)
Thd	< 0.05% (1 kHz, 1 V)	< 0.04% (1 kHz, 100 dB)

Key Highlights

Sennheiser HD 650Winner

🎵 Warmer than 600

📐 Still reference-ish

💰 Great value

😌 Comfortable

Sennheiser HD 660S2

✨ Latest HD6X0

🎵 Improved bass

📐 Refined tuning

💰 Premium price

Topic Battles

HD 650: 2|Tied: 1|HD 660S2: 2

🎵Sound Quality

HD 660S2 wins

HD 650

69%

HD 660S2

75%

😌Comfort

HD 650

70%

HD 660S2

70%

💰Value

HD 650 wins

HD 650

70%

HD 660S2

22%

🔧Build Quality

HD 660S2 wins

HD 650

84%

HD 660S2

93%

⚡Features

HD 650 wins

HD 650

44%

HD 660S2

Based on Reddit sentiment across 5 categories

📈Where They Rank

💬What Redditors Actually Say

What Redditors Say

Best praise vs top criticism for Sennheiser HD 650

Best Praise

+85 pts

“Welcome to the QC of what's supposed to be premium luxury products. Was a big part of what relieved me of the illusion of this hobby. Extreme high prices, low quality. HD650 for 10+ years strong”

r/headphones

View

Top Criticism

+115 pts

“No offense, mate.. but you have both the bass and the treble boosted.. No wonder those boring headphones suddenly sound better. They lack both bass and treble.. and can really use some EQ: [https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-png.101560/](https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-png.101560/) [https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-deviation-from-preference-png.101561/](https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-measurements-frequency-response-deviation-from-preference-png.101561/) I have the same amp, and it's an amazing piece of technology, but it doesn't have any magic sauce to improve headphones. What you need is headphones that you actually like.. or an equaliser that lets you play around with the FR of your HD650.”

r/headphones

View

3 more quotes available below

What Redditors Say

Best praise vs top criticism for Sennheiser HD 660S2

Best Praise

+75 pts

“I have never had any creaking on my HD 660S2 nor my older HD 600.”

r/headphones

View

Top Criticism

+21 pts

“The HD660S2 taught me not to trust that bronze detail”

r/headphones

View

3 more quotes available below

Sentiment Over Time

Sennheiser HD 650

Sennheiser HD 660S2

📈Historical Price Data

Sennheiser HD 650

Sennheiser HD 660S2

Sennheiser HD 650

All-time low: $273(2022-01)

$18 below 90-day avg

Sennheiser HD 660S2

All-time low: $372.21(2023-07)

$14 below 90-day avg

Which is Better?

Sennheiser HD 650 Wins

85%

650

80%

660S2

Close race, but Sennheiser HD 650 edges ahead by 5 points based on 6,705 Reddit opinions.

Why HD 650Winner

Better Value for Money (70% vs 22%)
Better Features (44% vs 0%)
More discussed (3,900 vs 2,805)

Why HD 660S2

✨ Latest HD6X0
🎵 Improved bass

❤️The Love/Hate Breakdown

Sentiment Breakdown

39%Positive

Positive

39%

Neutral

54%

Negative

Based on 3,900 Reddit opinions

Sentiment Breakdown

42%Positive

Positive

42%

Neutral

48%

Negative

10%

Based on 2,805 Reddit opinions

Specification Comparison

Spec	Sennheiser HD 650	Sennheiser HD 660S2
Transducer Principle	Dynamic, open	Dynamic, open
Impedance	300 ohms	300 ohms
Frequency Response	10-41,000 Hz	8-41,500 Hz (-10 dB)
Sound Pressure Level	103 dB (1 V)	104 dB (1 kHz, 1 Vrms)
Thd	< 0.05% (1 kHz, 1 V)	< 0.04% (1 kHz, 100 dB)
Driver Size	42 millimeter	—
Brand	Sennheiser Pro Audio	Sennheiser
Manufacturer	Sennheiser	Sonova
Color	Gray	Black
Weight	0.57 pounds	0.661386786 Pounds
Height	4.33 inches	7.0 inches
Transducer Size	—	38 millimeter

Feature Checklist

HD 650: 5|HD 660S2: 3

Feature	HD 650	HD 660S2
Improved bass
Warmer than 600
Still reference-ish
Improved frequency response is 10 39,500 Hertz ( 10 dB)
Hand selected matched driver elements; Highly optimized magnet systems for minimum harmonic and inter modulation distortion
Latest HD6X0
Refined tuning
Great value

Features extracted from Reddit highlights and enrichment data

⚔️Head to Head

Metric	Sennheiser HD 650	Sennheiser HD 660S2
Reddit Score	85%	80%
Mentions	3,900	2,805
Sentiment	+ 1514- 263	+ 1184- 288

Where to Buy

Sennheiser HD 650

Price unavailableCheck prices

All-time low was $273 on 2022-01

~300 sold/month on Amazon

Sennheiser HD 660S2

Price unavailableCheck prices

All-time low was $372.21 on 2023-07

Price Across Countries

Sennheiser HD 650

🇨🇦C$650

Sennheiser HD 660S2

🇨🇦C$800

Prices may vary. We may earn a commission from purchases made through these links.

Sennheiser HD 650Check prices Sennheiser HD 660S2Check prices

Frequently Asked Questions

Which is better, Sennheiser HD 650 or Sennheiser HD 660S2?

Based on 6,705 Reddit comments, Sennheiser HD 650 has a slight edge with 85% positive sentiment vs Sennheiser HD 660S2's 80%. The difference is small, so both are solid choices.

Should I buy Sennheiser HD 650 or Sennheiser HD 660S2?

Both have similar approval ratings (85% vs 80%), so focus on specific features, pricing, and what matters most to you.

What do Redditors love about Sennheiser HD 650?

Reddit users highlight: Warmer than 600. Still reference-ish. Great value. With 3,900 mentions and 85% approval, it's a well-regarded choice in the community.

What do Redditors say about Sennheiser HD 660S2?

Reddit users highlight: Latest HD6X0. Improved bass. Refined tuning. With 2,805 mentions and 80% approval, it remains a popular alternative.

How many Reddit reviews were analyzed?

This comparison analyzed 6,705 Reddit comments: 3,900 about Sennheiser HD 650 and 2,805 about Sennheiser HD 660S2. Data was sourced from headphones community discussions.

How accurate are these ratings?

Our sentiment analysis is approximately 80-85% accurate compared to manual review. Well-discussed products with many mentions tend to have more reliable scores than niche items with fewer data points.

Why trust Reddit over professional reviews?

Reddit users bought products with their own money and have no incentive to mislead. You're seeing hundreds of real opinions across different use cases, not just one reviewer's take. This crowdsourced approach surfaces both common praise and recurring complaints.

3,249 Reddit opinions analyzed · Last updated 7/15/2026

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