---
product_id: 50352901
title: "Sennheiser HD 660 S - Hires Audiophile Open Back Headphone"
brand: "sennheiser"
price: "R$69"
currency: BRL
in_stock: false
reviews_count: 2
url: https://www.desertcart.com.br/products/50352901-sennheiser-hd-660-s-hires-audiophile-open-back-headphone
store_origin: BR
region: Brazil
---

# 150Ω impedance for crisp, direct Hi-Res audio Dual detachable cables with balanced 4.4mm Pentaconn Hand-selected transducers with ±1dB stereo precision Sennheiser HD 660 S - Hires Audiophile Open Back Headphone

**Brand:** sennheiser
**Price:** R$69
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your audio game — hear what others miss!

## Quick Answers

- **What is this?** Sennheiser HD 660 S - Hires Audiophile Open Back Headphone by sennheiser
- **How much does it cost?** R$69 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/50352901-sennheiser-hd-660-s-hires-audiophile-open-back-headphone)

## Best For

- sennheiser enthusiasts

## Why This Product

- Trusted sennheiser brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comfort meets style:** Lightweight, over-ear aluminum and plastic build designed for marathon listening sessions without fatigue.
- • **Versatile connectivity:** Seamlessly switch between home and mobile Hi-Res devices with included 6.35mm and 4.4mm balanced cables.
- • **Audiophile-grade precision:** Experience ultra-low harmonic distortion with meticulously matched drivers for flawless stereo imaging.
- • **Durable, tangle-free design:** Para-aramid reinforced OFC copper cables ensure signal purity and hassle-free handling.
- • **Open-back spatial immersion:** Dive into expansive soundstage that places you at the center of your music or gaming universe.

## Overview

The HD 660 S is a reference-class open-back headphone engineered for audiophiles and professionals seeking exceptional stereo accuracy and low distortion. Featuring hand-selected dynamic drivers with a tight ±1dB matching tolerance, 150Ω impedance for direct Hi-Res device compatibility, and premium detachable cables including a balanced 4.4mm Pentaconn, it delivers an immersive, spacious soundstage in a lightweight, durable design perfect for extended use.

## Description

Reference class open back, dynamic headphone employing new and improved transducers delivering low harmonic distortion Transducers are hand selected for precise ( 1 dB) left / right matching tolerance insure exceptional accuracy and presentation of stereo spatial characteristics 150 ohm nominal impedance allows direct connection to home and mobile Hires audio devices.Contact pressure:6.0 N Â± 1 N Para aramid reinforced, detachable cables employ high conductivity OFC copper to insure signal integrity with very low handling noise Frequency Response 10 to 41,000 Hz ( 10 dB) , Impedance 150 ohm NOTE: Kindly refer to the user manual provided as a PDF manual in the product description section Supplied with two connection cables: One with a 6.35 millimeter stereo plug, the other a 4.4 mm Pentaconn balanced stereo plug. Also included is a 6.35 mm to 3.5 millimeter adaptor Wired 6.35 millimeter / 4.4 millimeter Pentaconn

## Features

- Reference class open back, dynamic headphone employing new and improved transducers delivering low harmonic distortion
- Transducers are hand selected for precise (1 dB) left / right matching tolerance insure exceptional accuracy and presentation of stereo spatial characteristics
- 150 ohm nominal impedance allows direct connection to home and mobile Hires audio devices. Contact pressure: 6.0 N - 1 N
- Para aramid reinforced, detachable cables employ high conductive OFC copper to insure signal integrity with very low handling noise
- Supplied with two connection cables: One with a 6.35 millimeter stereo plug, the other a 4.4 millimeter Pentaconn balanced stereo plug. Also included is a 6.35 millimeter to 3.5 millimeter adaptor. Connectivity Technology: Wired 6.35 millimeter / 4.4 millimeter Pentaconn

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Control Method | Touch |
| Control Type | diaphragm movement |
| Unit Count | 1.0 Count |
| Cable Length | 3 Meters |
| Item Weight | 0.58 Pounds |
| Water Resistance Level | Not Water Resistant |
| Is Electric | No |
| Antenna Location | Music |
| Compatible Devices | Cellphones |
| Cable Features | Tangle Free |
| Additional Features | noise-isolation |
| Enclosure Material | Aluminum, Plastic, Metal |
| Specific Uses For Product | Music,Gaming |
| Headphone Folding Features | On Ear |
| Earpiece Shape | Rounded, over-ear design |
| Headphones Ear Placement | Over Ear |
| Style Name | Contemporary |
| Theme | Audiophile Headphones |
| Color | Black |
| Wireless Technology | Wireless,Wired |
| Connectivity Technology | Wired |
| Headphone Jack | 3.5 mm Jack |
| Frequency Range | 9 Hz - 41,500 Hz |
| Audio Driver Type | Dynamic Driver |
| Frequency Response | 28000 Hz |
| Impedance | 150 Ohm |
| Noise Control | None |

## Product Details

- **Brand:** Sennheiser
- **Color:** Silver, Red
- **Ear Placement:** Over Ear
- **Form Factor:** Over-ear (circumaural)
- **Impedance:** 150 Ohms

## Images

![Sennheiser HD 660 S - Hires Audiophile Open Back Headphone - Image 1](https://m.media-amazon.com/images/I/71L+UZIY1iL.jpg)
![Sennheiser HD 660 S - Hires Audiophile Open Back Headphone - Image 2](https://m.media-amazon.com/images/I/61NFHMqtCiL.jpg)
![Sennheiser HD 660 S - Hires Audiophile Open Back Headphone - Image 3](https://m.media-amazon.com/images/I/61kP64Fpb6L.jpg)
![Sennheiser HD 660 S - Hires Audiophile Open Back Headphone - Image 4](https://m.media-amazon.com/images/I/61Dxnhx7wXL.jpg)
![Sennheiser HD 660 S - Hires Audiophile Open Back Headphone - Image 5](https://m.media-amazon.com/images/I/51-wc9S7GVL.jpg)

## Questions & Answers

**Q: Would the LG V30 power these well without a amp?**
A: Yes, my LG V30 auto-detects them as high-impedance, and is capable of very high volume. At volume level 55, it's already around 80-85dB with modern music. The sound quality is quite good with tightly controlled, powerful bass and fairly open soundstage.  It's a very good pairing. Just remember the stock HD660S cable is rather long and needs to use an adapter to 3.5mm, so if you're mainly going to use it with the V30, I might look into a shorter aftermarket cable terminated in 3.5mm TRS.

**Q: Can the balanced cable be used with an onkyo dp-x1?**
A: The balanced cable that comes with these 660S is a 4.4mm Pentaconn connector which is a larger version of the 2.5mm 4 pole port that Onkyo uses.  You may be able to find an adapter, otherwise you'd have to find an aftermarket cable.  I had to purchase an aftermarket XLR balanced cable to use this with my Schiit Jotunheim.

**Q: If i have the sennheiser hd 598 sr, i will love the headphones sennheiser hd 660s in terms of sound and comfort?**
A: It will depend person to person but i had those cans too and i do like my 660s more.

**Q: How do these compare with the HD600s?**
A: That's a tough one. The comfort of both headphones is great. I can wear them for hours and forget that they're on my head. As for sound, it's really hard to say. I can't give a head to head faceoff kind of comparison as I traded in my Hd-600's for a chance to move up to the 660S's. I do feel that the soundstage is more defined with the 660's. When a particular instrument comes into a song, it comes in powerfully and it feels like it's in the room with you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ HD 660 S review - Magical legendary-ness - S Tier goodness
*by C***6 on March 6, 2022*

Let me start this off correctly. These are the best and closest to perfect headphones you will be able to find overall. The 660 S is pure magic for your ears. It’s worth the price. 💯We can’t really talk about the 660 S without talking about the 650. I had the HD 650 back from 2013 to 2016 until I finally sold them. The HD 650 are top notch headphones, but I switched over to the X2s at the time. I don’t regret the choice. The HD 650s need a lot of power and the X2s at the time had very little competition in the $300 segment. They had more soundstage and bass. The HD 650s, which the HD 660 S is attempting to dethrone here, is an absolute monster of a headphone. The 650s offer a fatigueless experience and have basically no major flaws. True for it's time. Then I got the 660 S!The 660 S is the better headphone. It’s easier to drive first of all. Many of you may not even know what Ohms and sensitivity are. Let's say the 660 S is in many cases 30-40% louder on the same equipment. The 660 S can do everything the 650 and 600 do much better. Don’t let anyone trick you on this. It’s better – in every way. Through some sort of magical engineering, the 660 S takes the 650s top end veil off, without bringing up the highs. In fact, the highs are even further recessed on the 660 S. Don’t let this pull you back. All the details are there. Unless you’re a huge fan of V shaped headphones, you won’t find something better under $500 than this. That’s just how it is. You have to accept it. This is S tier all over the place. Let’s talk further about sound. I’m going to be brief.The 660 S are the smoothest headphones I’ve ever heard. Highs, bass, and mids are absolutely and completely balanced. Bass is punchy, accurate, and present. Mids are, of course, the highlight of the 600 series and here you are getting the best mids nearly of any headphone unless you step up humongous amounts of $. The soundstage is fantastic. It’s not too wide or too narrow. It’s just right. Where these really shine is the treble for me. These present fatigueless, milky smooth, crystal clear, purely magical, ear soothing, and perfectly accurate highs. These are a 9.5/10 headphone and S tier. You can’t beat these even if you pay $500. If you can get them for less than $500 then you are getting the best deal of your life in headphones.They are significantly better than the 650. We aren’t talking a little here. There’s a huge jump of at least 30% in clarity and imaging. Huge. I bought these and the Fiio K5 Pro. I’ve never heard sound so good in my life and I used the Creative Z with the HD 650s for years. As soon as I put these on and listened even for a little bit, I was floored by what I was getting. I said the highs were the best part right? The IMAGING!! What the heck? Let me tell you I listen to music from video game OSTs more than really anything. Wow. Incredible. This will show you details in something as old as SNES music that you never even knew existed. The imaging on these has to be some of the best in the entire world. Sounds pop up all around you and it doesn’t just sound like two speakers hitting your ears. Phenomenal imaging. They sound so clear. If you’re on the fence like I was, just get these. Do it! They’re glorious. They’re glorious with any DAC assuming they have enough power. Yes, my K5 Pro sounds way better than my other DACs, but stepping down into a lower DAC is not a disappointment at all. They’re still top tier and the best.Yea, I don’t care about all the Sundara & DT 1990 hype. Those two don’t image like these do. If you absolutely must have the bass, then these may disappoint, but if you aren’t a bass head, then these are a no-brainer. I’ll also help you here. If you really can’t justify the pricetag of these, then get the Philips SHP 9500 with the K5 Pro or E10K-TC. This combo will probably be a little cheaper, but it will sound pretty good & similar. The 9500 with the K5 Pro is quite exceptional. You won’t have the milky smooth highs though. But, if you *only* are in need of headphones, then get the 660 S. Do whatever you have to do to get your hands on them.Here's another tidbit. You can repair the HD 660 S easily with spare HD 650, 600, or 660 S parts. Everything can basically be tool-lessly repaired in the 600 line. It’s extremely supported with cables galore everywhere. The issue with the Sundaras and the 1990s is that they’re not going to have the level of support that the 660 S has. There’s a reason that the 600 series have been going strong since 1997.The 660 S is the gold standard now and every headphone should be attempting to live up to their magic. Yes, they’re legendary. Yes, the legend continues.

### ⭐⭐⭐⭐⭐ World-Class Audio Reproduction
*by C***R on October 16, 2022*

First, let me start out by saying I'm a professional audio engineer with a focus on Jazz, Classical, Pop, and Americana genres. I own/use the following headphones currently: AKG K701, Audeze Sine, Audio Technica ATH-M50x, Beyerdynamic DT 1350-80, Beyerdynamic DT 880 Pro (250 Ohm), SONY MDR-V6, and a few more lower-end consumer grade headphones.Second, let me share something important in the HD 660S owner manual that some might miss:"These open dynamic headphones have been designed for home use with high-quality audio systems". Such system components display the "Hi-Res Audio Certificate" on their packaging and are thus meant to reproduce high quality audio recordings made to the "Hi-Res" standard.Numerous blind studies confirm trained listeners agree that what makes a headphone sound "good" is neutral, natural, balanced sound that replicates the audio quality of good speakers playing well recorded music in a good home acoustic environment. The HD 660S has been so designed; but if you want to hear how great the HD 660S sounds, you need to play music that already sounds great.So for those having no particular interest in superior high fidelity audio reproduction, then money spent on the HD 660S will be wasted. The HD 660S while somewhat forgiving, will make very obvious every flaw in music that has not been well recorded; and the lower quality of lossy audio formats such as MP3 will not allow the HD 660S to shine. The Audio Technica ATH-M50x, the SONY MDR-V6 or MDR-7506, or other cans of comparable quality, will get you a much better bang for your buck.For the rest, in my estimation, the HD 660S design goal has been well achieved, such that my HD 660S reproduces closely the dynamics, fidelity, sound stage and imaging of my studio reference speaker system. The HD 660S is a very musical headphone and worth considering for its intended purpose: enjoying Hi-Res music to the point one can get completely immersed in the experience.I would not use the HD 660S for tracking, mixing, or mastering. However, it *is* my go-to headphone for enjoying the results while relaxing in my easy chair at home. One more comment in that regard: Some reviewers are disappointed with the "width of the sound stage", accustomed as they are to the exaggerated sound stage width of most open-ended headphones. The HD 660S replicates the sound stage of my stereo masters *as they sound over my studio reference speaker system*.Sennheiser has in fact achieved with the HD 660S *not* the unnaturally wide stereo spread of most open headphones, but instead the "neutral, natural, balanced sound of good speakers in a good room". That, IMO, is a great accomplishment, and one of the main reasons I'm a big fan of the HD 660S.Writing this review in the Fall of 2022, I've not experienced any of the very few negatives some have mentioned in prior reviews of the HD 660S, and would purchase this headphone again in a New York minute.BTW, ignore the audiofools: there's no such thing as headphone "burn-in". Enjoy these right out of the box by giving your psycho-acoustic system (i.e. your ear/brain interaction) the opportunity to adjust as soon as possible to the audio signature of these very fine headphones.

## Frequently Bought Together

- Sennheiser HD 660 S - Hires Audiophile Open Back Headphone
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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-28*