Pair the 650s with a warm-sounding amplifier, and you'll be listening to mud

You definitely don't need to change the DAC.All you need to do is get a powerful amplifier (read powerful, not expensive): that is powerful and transparent, to provide enough clean power

You definitely don't need to change the DAC.All you need to do is get a powerful amplifier (read powerful, not expensive): that is powerful and transparent, to provide enough clean power

I probably should get myself a decent headphone amplifier first.

However, it bears mentioning that you should not even consider buying these cans without first buying a capable amplifier

I HIGHLY recommend a good DAC/Amplifier setup, does not need to be crazy, but is sooo worth it, even if just a good entry level combo unit

I initially tried the 600 ohms Beyer DT880 and quickly realized that they are very power hungry and deserves nothing less than a good quality headphone amplifier to drive them

The headphones in my opinion deserve a good headphone amplifier to get the most out of them.

Make sure you have a decent amplifier to drive these things

Pair these with a good amplifier, I recommend the Valhalla 2 for an entry level or a Ragnarok if you can afford it for solid state

Also, you will need to by a decent headphone amplifier if you wish to make them really shine

Also I recommend a good DAC and headphone amplifier

HD650 doesn't come with best sound without doing any thing, however, it sounds fantastic when you pair it with a good amplifier and cables

I knew I would need a decent amplifier to push the 650s which have a high impedance, and that meant even more cash layout.

Let me emphasize "require" in my previous sentence; many people may underestimate the importance of a powerful amplifier with these higher grade headphones to make the most out of there experience with them

I alhave these plugged into a schiit magni 2 which is a very good affordable amplifier.

I definitely recommend you get a decent headphone amplifier to really drive these, otherwise you might not be happy about the volume output

I do suggest a decent headphone amplifier(Headroom for example) and a high end replacement cable like Cardas.

If you're good with electronics, can read a schematic and can do a professional solder joint, then you too can learn enough to build a great sounding headphone amplifier

Even a cheap solid-state amplifier (well under $50) makes a huge difference

It is important to note however, that you need a decent amplifier in order to get the most out of these

Due to its high impedance and lower sensitivity, HD650 may require very strong amplifier to deliver higher level sound

But with a good amplifier they will sing.

Even a cheap solid-state amplifier (well under $50) makes a huge difference

If you don't use very precise and powerful headphone amplifiers,this headphone will be only an ugly big headphone

I recommend you to use an amplifier as well because of the high impedance

I noticed that any one who tried this head-phone in my house either froze for several minutes or ended up shouting "this is awesome".Make sure you have a proper amplifier that you can plug this monster to.

With the right amplifier, the 650s should sound full, relaxed, and smooth (I used a Chord Mojo, for reference)

If you like a laid-back, really mellow phone with no personality, you might like these

I am etiher getting accustomed to the sound or they are improving as I use them more

In excellent condition as well--almost as if they were never opened :D Thank you!

So I looked at Sennheiser other phones as well as

and I absolutely love them months after purchasing just as much as I did the first day.

The HD650's may not have the fancy technologies of orthodynamic or electrostatic units, nor the pricey parts and accessories, but they definitely sound nearly as good and even better in some ways

I have found they sound marvelous with vintage Marantz receivers that can be obtained inexpensively, as well as from modern dedicated headphone amps

The headphones were nice enough to put the Braille letter L on the left side but the cable has no such thing.

For softer pop songs and guitars, "Acoustic" brings out the lighter more ethereal tones, but stay away from the flattening abomination called "Pop"; if you want a fun punchy pop song, I'd recommend "R&B", it may be a bit on the smooth side bass-wise, but it does the job well