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Sennheiser HD650 Impressions Thread - Page 1207

post #18091 of 20526

Bought my pair yesterday, driving them with my MBP while waiting for the M&M-stack to arrive (damn FedEx). They sound fantastic, so my expectations are high for tomorrow when the DAC/Amp are arriving. I've had the HD555 since they were released (2001-2002ish?), but I started to grow tired of them. They downside is that they are not (yet) as comfortable as my old headphones, but hopefully they'll become more comfortable with time. :)

post #18092 of 20526

 

Quote:

Originally Posted by hanson72 View Post
 

JDS Labs Objective 2, has batteries so its somewhat portable too. Works great with IEMs and 650s. Hell it works great with 95% of headphones.

 

I have an Epiphany O2 but I don't like that the input is in the front and that it runs on battery. It doesn't look good as a desktop solution and it's an annoyingly big brick for portable use. I want to get rid of it soon.

post #18093 of 20526
I have a Head 'n' HiFi desktop version & it's wonderful. Paired with their ODAC XL I don't think you'll find better value for money.

http://www.headnhifi.com/amplifiers/desktop-headphone-amplifiers/O2-desktop-amplifier

I chose gains of 1x & 3x by the way. This is enough to drive all my headphones very well.
Edited by Zorrofox - 6/25/14 at 1:22pm
post #18094 of 20526

HD650s sound amazing with Chord Hugo. Very analogue and transparent. HD650s sound more detailed than ever. That said, I hope Sennheiser releases HD850s soon. :)

post #18095 of 20526

Hi everyone, I just ordered the Just Mobile Head Phone stand for my HD650 

http://www.just-mobile.com/mac/headstand.html?JmSwitchCountry=IL#.U6tB8fmSzLc

 

And after reading a review in amazon someone said they won't fit the HD650 because the stand is too short, does any of you have experience with that ?

The stand length is 25cm its really on the edge when considering the headphone with the cable connectors..

Should I cancel my order? 

post #18096 of 20526

Can someone explain (or link) why output transformer-less amplifiers are particularly well-suited for HD 650 (and other headphones in its impedance range)? Clearly this is accepted wisdom, but I'm having trouble finding an explanation. What makes it so favorable?

 

Were I to guess at answering my question, I see that the Valhalla 2 power output peaks into 300 Ω (higher than both 50 Ω and 600 Ω specs), whereas other designs scale down in power with escalating headphone impedance (power into 600 Ω lower than 300 Ω, 300 Ω lower than 50 Ω, etc.). An amplifier that delivers its peak power into your desired impedance load implies an ideal match of sorts. 

 

The V2 delivers 800 mW into 300 Ω. Checking just a few common amplifier specifications, I found only Schiit's own Mjolnir with more power at that load, and only another 50 mW at that. What does all that power get you? Clearly it'll be plenty loud, but 40x less power would accomplish that for HD 650. Does it also optimize signal/noise ratio (even better than the quite acceptable low-gain spec Schiit gives)? Does it free up the design budget for other goodies you wouldn't otherwise get when trying to optimize for other impedance loads (or accommodate a range or loads)?

 

I have a perfectly good Asgard 2 that drives the HD 650 (and my powered desktop speakers) quite nicely. But since I only use HD 650 headphone at the desktop, I don't really need the A2's range of capability, so I'm intrigued by getting an amplifier optimized for the HD 650. But other than more than 2x the power, the rest of the specs differences, as they relate to HD 650, seem pretty nuanced to me. V2 has 5x the distortion, but IMD tops out at 0.05%, so doesn't seem like an issue. 

 

Which brings up a somewhat more sensitive point, that even with different distortion character between tubes and solid state, why would I expect much audible difference with such low distortion overall? The funny thing is, seeking out a particular sonic signature or harmony between the amp and headphone isn't really the priority for me (nor is implying that all amps with the same specs sound the same). If I just wanted to "try tubes," I'd order a Vali. But I would like to understand why the V2 and other OTL designs are particularly well-suited for HD 650 and why. 

post #18097 of 20526
Quote:
Originally Posted by Aerocraft67 View Post

 

Which brings up a somewhat more sensitive point, that even with different distortion character between tubes and solid state, why would I expect much audible difference with such low distortion overall? 

 

That's an interesting question, I've been asking myself:

 

http://www.head-fi.org/t/721500/how-is-tube-sound-even-audible-in-modern-headphone-amps

 

And to answer your main question - I would stay on Asgard 2, there wouldn't be much (if any) sonic difference and its power output is more than adequate for HD650.


Edited by madwolfa - 6/25/14 at 4:16pm
post #18098 of 20526

I recently got a new DAC, and I must say, my current setup finally brings the best out of my HD650's. At first I wasn't overly impressed with the headphones, but boy did these grow on me! and I have to say, the sound I have coming out of my current setup with the HD650s is the best I ever had it. I am running music from my computer via USB to a North Star Design Essensio DAC to a Meier Audio Corda Concerto amp and to the HD650s. I had the HD650s for months now and only now after replacing the DAC in my setup the results are just remarkable...! once day I'll want to get an Audeze for this setup, but for now the HD650s are just sparkling, more dynamic and detailed than I've ever heard. Truly a winning combo!!

post #18099 of 20526

What DAC did you get?

post #18100 of 20526
Quote:
Originally Posted by greenkiwi View Post

What DAC did you get?

Essensio by North Star Deaign. A brilliant DAC from an Italian manufacturer.
post #18101 of 20526

Hey, where is the cheapest you can buy these? Anywhere cheaper than the Sennheiser Outlet Store ($424)? I always check Amazon Warehouse, they are at $411 right now. My paycheck comes in a week and I'm constantly trying to find the best deal possible. 

post #18102 of 20526
Quote:
Originally Posted by Fuzziekiwi View Post

Hey, where is the cheapest you can buy these? Anywhere cheaper than the Sennheiser Outlet Store ($424)? I always check Amazon Warehouse, they are at $411 right now. My paycheck comes in a week and I'm constantly trying to find the best deal possible. 

If you don't mind used then the FS forum is the easiest to find it for less than $300. I jumped on the Amazon used pair ($250) that was posted on the deals thread.
post #18103 of 20526
Quote:
Originally Posted by Za Warudo View Post
 
Quote:
Originally Posted by Fuzziekiwi View Post

Hey, where is the cheapest you can buy these? Anywhere cheaper than the Sennheiser Outlet Store ($424)? I always check Amazon Warehouse, they are at $411 right now. My paycheck comes in a week and I'm constantly trying to find the best deal possible. 

If you don't mind used then the FS forum is the easiest to find it for less than $300. I jumped on the Amazon used pair ($250) that was posted on the deals thread.

I won't use the FS forum on here, but I will buy open-box, refurb. 

post #18104 of 20526
Quote:
Originally Posted by Fuzziekiwi View Post
 

Hey, where is the cheapest you can buy these? Anywhere cheaper than the Sennheiser Outlet Store ($424)? I always check Amazon Warehouse, they are at $411 right now. My paycheck comes in a week and I'm constantly trying to find the best deal possible. 

 

Sennheiser has tightened their grip on how their dealers can price these phones, so unfortunately the days of the great HD650 deals might be over.  I used to recomend RazorDog for these, but I think he's no longer a Senn dealer.  Most likely because of the latest crack downs...

post #18105 of 20526

You can find them new in accessory jack for 400$ ..

 

Though you should read up about the warranty in here:

http://www.head-fi.org/t/584835/is-accessoryjack-com-a-legit-site


Edited by atraf - 6/27/14 at 5:21am
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