Before we get into the best headphone amp for the Sennheiser HD650, grab a snack, sit back and relax because..
You’ve come to the right place!!
If you were browsing good amps for the HD650, and came across this article but haven’t yet purchased the headphone, I would highly recommend it without reservation. It’s a fantastic all purpose piece that works well for all genres, in all situations, and for the widest variety of people in general. I would say it’s a headphone that 99% of people will enjoy regardless of whether they’re an audiophile, budding enthusiast, or just the average listener looking for fantastic sound and and an incredible price to performance ratio. There’s really nothing it doesn’t do well, which is why it’s such an easy purchase.
It also sits right on the line where if you spend any more money, you’re probably receiving a smaller and smaller increase in quality due to the law of diminishing returns. Of course there are exceptions to this rule, but I would say the 650 along with the venerable HD600 are the quintessential open back studio headphones for certain. Their history speaks for itself really..
Read on for some great amp pairings with this puppy!
What I will bring you in this article
You need a DAC, mate!
Hooking it all up
Now without further ado, let’s get rolling!!
It may seem like a daunting task in trying to decide on an amp for the HD650.
In reality, it’s not.
Because I’m here to steer you in the right direction, out of the audiophile fog, and into the glorious practical light. 🙂
Before I tell you all about it though, just input your credit card and personal information into my trusty database.
Haha just kidding.
The good thing about the HD650 is that it’s not really that picky of a headphone; most pairings will sound very good!
The dilemma arises when looking for the best amp that matches the 650 in synergy and dynamics.
Thankfully, it’s not really a dilemma. There are some great options out there that are very much agreed upon by folks as being the cream of the crop. I did quite a bit of research regarding the best, tested out some pairings, and I have some news for you.
This small Tic-tac sized wonder will power the 650’s just fine, and in fact the pairing sounds sublime. You may not ever want to upgrade down the road, as a fella even said it powered his HD800’s phenomenally well too! What I love most about this little buddy is how portable it truly is. If you’re on the go a lot like me, you’ll find it incredibly easy to throw into a laptop bag or even your pocket! Once you reach your destination, whip it out and stick it in the USB hole! It’s really that simple. If you desire to pair it with your phone, that’s cool too. You’ll simply need this adapter which is very cheap and gets glowing reviews. What more could we possibly ask for?!
Another great option with the 650. Just be aware that Oppo has since stopped making products. That said, I still recommend this Amp if you can get it at a good price because it sounds absolutely fantastic and provides an all in one solution for your desktop or on the go! To be honest it’s the best Amp/DAC that I’ve personally heard. It’s the most durable and heavy duty out of all the portable Amp/DACs I’ve tried, and everything feels solid to the touch. I love how the volume knob feels, and it has a bass boost and gain switch in case you’re feeling frisky. To put it another way, after you purchase this beast you’ll likely be set for life!
This puppy is extremely versatile with RCA/Analog outs, Optical out, and USB inputs. It makes an amazing Gaming rig as well! I was astonished at how much of an upgrade it was vs. plugging the headphones right into the Dualshock 4. The Best Headphones for Gaming! This just may be the most versatile little box under $200 or otherwise. You can power your studio monitors with it, you can use it as a headphone amp, or you can use it as a gaming rig on your console or your PC! What are studio monitors? It even brewed me a cup of coffee the other day! What I also love about it is that it’s immediately recognized by your PC and there are zero issues. Finally, this would make a fine portable option as well, so theoretically it could be lumped in with the Dragonfly and HA2. That’s how it should be homie!
This little Amp/DAC combo for less than $100 may be the best overall value you’ll find, with it’s incredibly clean signal, bass boost, and gain switch. The unit feels extremely solid to the touch considering how cheap it is, and the volume knob is solid as a rock. I love playing with the knob itself, and find myself turning it on and off just so I can hear that satisfying click. Hehe.
Comes with coaxial out, line out, and USB input. What more could you ask for regarding an Amp/DAC combo? I would probably steer clear of trying it with anything over 300 Ohm, but that’s a small minority of headphones. This puppy is fabulous!
This is by far the best Amp/DAC combo I’ve heard, and an end game solution for the majority of folks out there. Even the the snobbiest of audiophiles would be hard pressed to look for better sound after hearing this thing. It really is that good, and does sound better than something in the budget category or even a step above that. With most Amps, you can’t hear that big of a difference in all honesty. The Mojo is definitely an exception. It sounds almost as good as the Hugo2 for a fraction of the price as well! Related:Chord Mojo vs. Hugo2
The tried and true solid state amp from NwAvGuy, providing a clean, neutral, and transparent sound for the 650. Recommended the world over. I absolutely adore this amp paired with a Cambridge Audio DAC Magic 100 with these RCA to 3.5mm cables. Those are fairly expensive though. Use these if you want to save some money, but the combo? It’s simply sublime. You could also opt for the 02 + ODAC here, or use a Schiit Modi. In my estimation, the 02 sounds a bit better with the DAC Magic than it does with the Modi, but the differences are fairly marginal and you may not even notice. That said, you’ll know where that extra $100 went if you purchase a DAC Magic. It’s extremely versatile like a D1. If you don’t want to deal with the hassle of buying cables and a separate DAC though, just get the 02 + ODAC combo.
This is one of the amps I use on my desk and it powers all headphones with relative ease. Schiit has since come out with the Magni 3, which provides even more power! ZOMG!
I’ve used this combo since December of 2016, and it’s served me well. I do think the Objective 2 (above) provides a cleaner overall sound and more revealing character, but I still really enjoy this Schiit. 😛
Links to the Magni 3 will be in the review, so don’t fret!
A perfect entry level tube amp to get your feet wet. Does a great job of providing plenty of warmth and detail, while also separating sounds and providing a good 3D landscape. What is Soundstage?
Includes 2x input ports including line in and RCA. It’s also got 3x output ports including 3.5mm jack, 1/4″ jack, and RCA jacks. So it’s flexible in that if your headphone terminates in a 1/4″ jack you won’t need an adapter.
This is probably the #1 option for both the Sennheiser HD600 and 650. Learn more:Sennheiser HD600 vs. 650. The only caveat here is that this kit is a DIY project. You’ll need a soldering iron and some basic know how. Fortunately, the instructions are all there and by all accounts (that I’ve read), it’s a lot of fun and not all that difficult. The Bottlehead Crack provides the perfect synergy with the 650 because it’s squeaky clean but also warm at the same time; something my Magni is simply not capable of. Also, the 650 has a good Soundstage on it’s own, but the Crack adds more depth to the image giving it even more room to breathe. What is Soundstage? I didn’t think that was possible as the 650 on it’s own is incredibly open and spacious.
This is the second most sought after tube amp to pair with the 650, and it doesn’t disappoint. You will want to immediately upgrade the tubes however, as the majority of folks weren’t digging the stock homies that come with the amp. A lot of folks are wetting themselves over this combo too. It seems to add color and warm up the sound of the 650, while also bringing the mid-range forward a bit. This renders songs in a way that’s very resolving but also musical, with a Soundstage to die for.
A lot of folks like this option as the best overall for a tube amp paired with a Bifrost DAC. In fact, both the Darkvoice and Valhalla are probably tied for the #2 spot behind the Crack for best pairing with the 650.
This little beast pairs extremely well with a Topping D3 DAC, and has RCA outputs on the back for some added flexibility. You can use it as a preamp to power some studio monitors or you can hook it up to your Turntable for some fresh Vinyl snacks! Like the Darkvoice, this Little Dot also benefits from some tube rolling but the stock tubes sound fine too if you don’t want to upgrade right away. This amp is not to be taken lightly, as it’s one of the best overall pairings with the HD650. It has a rock solid build and lots of power as well. If you’re coming from a cheaper solid state amp, get ready to have your mind blown!
As you can see, there are a lot of potential pairings, but we’ll stick with the ones above for now.
If you come across this article and think one of these should absolutely be included in the main list, let me know! If you have a suggestion that’s not included here, also let me know!!
You need a DAC, mate!
Don’t forget that you’ll also need a DAC, or digital to analog converter if what you decide on is not an Amp/DAC combo. A DAC is simply how your computer makes sense out of the digital information, as it converts the 1’s and 0’s into the sound (analog) that you hear. An amp just amplifies that low voltage signal. Without a DAC, an Amp is essentially useless. Related:What is a USB DAC?
I wouldn’t recommend using your PC’s internal DAC, as most of the time it sounds like poop and will only end up amplifying a bad signal. That said, if you have a newer laptop or PC, you may be fine and not even really need an Amp/DAC at all. Just something to keep in mind.
Some DAC’s were briefly touched on above, but I use the Modi and it pairs well with most Amps.
So in short, here are some DAC’s to consider:
Schiit’s Modi. Bare bones DAC if you will only be needing it to provide a simple and clean digital to analog conversion. Learn more about how your PC processes sound:Bit depth vs. Sample Rate.
First, use the supplied power brick with the 02 and plug it into an outlet, with the other end going into the Amp via the 14-20 VAC hole.
Second, just use some RCA to RCA cables. Plug 2 into the white and red of your DAC, and run the other ends into the white and red of your amp.
If you choose to go with an Objective 2 from JDS Labs, you’ll need the RCA to 3.5mm as we discussed earlier.
Just plug the 3.5mm end into the front of the the 02, and the Red and White into the back of the DAC of your choosing. That could be a Modi, DAC Magic 100, or something else entirely but those are the two I would recommend first. To be honest, anything more than a DAC Magic 100 will not yield a monumental increase in quality. Learn more:The Law of Diminishing Returns
After that, run an appropriate USB cable going from the DAC into your PC.
Lastly, power on the amp and go to your PC’s control panel. From there click on “Sound”. Then find the DAC that you’re using, right click it and “Set as Default Device.” You’re now ready for some tunes!
Check out these cool Infographics I came up with to help you out! Please share!
For Your Console
D1 Graphic Coming Soon!
Note: The PS4 Slim does not have Optical input.
(Audioengine D1 as an example)
The PS4/Xbox receives an optical cable in the rear.
The other end of the optical cable plugs into the back of the D1.
Use a USB cable from the back of the D1 into the front of the PS4 or Xbox One. I’m not familiar with the SexBox because I don’t have one, but there are USB inputs on it so don’t fret!
Plug your headphones in.
Go to Settings > Sound & Screen on your PS4.
Go to Audio Output Settings.
Click Primary Output Port
Change it to “Digital Out”
The Input format should be Linear PCM.
Go back to Settings > Devices > Audio Devices.
The Output Device should be the name of your DAC, i.e Audioengine D1.
Note: With the DAC Magic 100 I had no issues. With the D1 I ended up having to change the output device from “Audioengine D1” to “TV/Amplifier.” Your mileage may vary. Switching it to TV/Amplifier allowed the sound to come through the headphones. I’m not sure why it was being difficult, or why the sound wouldn’t come through even though the settings were right. If you have any insight into this, let me know!
Amp with Standalone DAC
JDS Labs Objective 2 example
Use the supplied power brick that came with the amp.
Run RCA to 3.5mm from the back of the DAC into the front of the 02. If you’re using the Modi 2 Uber with a Magni 3, use these RCA to RCA cables. Two ends plug into the back of the Uber and the other ends run into the back of the Magni.
Run a USB cable from the back of the DAC into the front of the PS4.
Power on the Objective 2, plug the headphones in, and go to your PS4’s Settings > Sound & Screen > Audio Output Settings. Click “Primary Output Port.” Change it to Digital Out. The Input format should be Linear PCM. Go back to Settings > Devices > Audio Devices. The Output Device should be whatever the name of your DAC is!
Now adjust the volume to taste. You’re ready to start Gaming! The Objective 2 is fully customizeable. On the JDS Labs website, you can specify Headphone Jack, Input Type, Front or Rear Mounted Power Jack, Gain, and Battery settings. Rad!
For Tube Amps
If I had to choose one, I would go with the Bottlehead Crack today friend.
It has the most endorsements, and combines detail with warmth which makes the 650 sound absolutely sublime.
I would definitely go for the Objective 2 as a versatile option for a wide array of headphones. The signal is ridiculously clean and transparent. Perfect for something like an HD600/650 as a solid state buddy.
Stu is determined to help you make sound decisions, and strives to deliver the best and most in depth content on the internet! In his spare time, he likes to fish, paint, play guitar, attend church, take photos, record videos, graphic design, and more. His strict attention to detail and perfectionist attitude are what allow him to excel and stand out among-st the crowd.