I’ve made a lot of amp recommendations here at Home studio basics, but just recently thought about the fact that I don’t really have an article on the 2 different types. Yes! There are two, specifically Tube amp vs. Solid State. Before I get into it though,
Grab a snack, sit back and relax because…
You’ve come to the right place!!
What I will bring you in this article
Does your headphone need an amp?
Now without further ado, let’s get rolling!
I never knew there was such a thing as a headphone amp, even just a few years ago!
Once I got my feet wet in the audiophile world, I realized what an endless amount of possibilities there are. There are so many different types of headphones and amps, that it can become overwhelming at times.
I do my absolute best here to give you concise reviews and comparisons. My goal is to narrow down options and come to a consensus on what is best, what’s good, and what’s bad. I always ask that you let me know if I miss the mark! With headphone amps, it can be very difficult to come to a solid conclusion on which headphone is best suited with a particular amp. There are a ridiculous amount of them on amazon these days!
Luckily, there are a select few out there that are consistently sought after and given high marks. Most of the ones I recommend are Solid State and can be found on amazon. Tube amps are the other type, and they are generally reserved for those super nerdy audiophiles. You know, the kind that attends Head-Fi meets? Lol, I actually do want to attend one of those at some point 😛 But onwards my boy/girl!
These are the ones that are less likely to be found in abundance on amazon. I’ve seen some, but the vast majority of these babies appear on manufacturers’ websites, or some obscure site you may happen to land on in your search.
They are said to be warmer, smoother, and more musical than their solid-state counterparts. They also:
Higher distortion than similarly priced solid-state amps.
Roll-off at the limits of human hearing frequencies.
Tube amps are basically meant to “color” the sound in a very pleasing way. Even though they do tend to have more distortion, the characteristic can be very pleasing. It gives a nice texture to the music that sounds very rich, warm, full, and smooth.
A tube amp also kind of “rolls off” the higher and lower frequencies, rather than having them just come to a rough stop. Some modern tube amps are actually being designed to mimic that of a more neutral, solid-state amp.
Another interesting thing that many audiophile geeks do is change the tubes inside the amp, thus changing the sound to their liking. This has almost become a hobby in and of itself! There are tubes out there that take the amp to a whole new level, breathing new life into old music.
As far as build, a tube amp is a lot more fragile due to the nature of vacuum tubes and the high voltage that the circuitry uses. Some people say they are easier to work on, but are less stable and have more frequent problems. Others claim that they are actually very durable and can last a lifetime given proper care. It may be the wax capacitors that wear out rather than the other components. A capacitor is just a device used to store an electric charge if you were wondering!
At the end of the day, there will always be differing opinions on each. There are situations when tube amps hold up longer than solid-state amps, and vice versa.
By now you may be asking, where does the sound of tube amps originate? Well, there are 4 primary locations:
The tubes themselves
The circuit design
To go into further detail, all of this stuff relies upon each-other, so much so that any change in these 4 components will have an effect on the overall sound. It really is an art form! As mentioned earlier, headphone nerds love to change stuff. The easiest stuff to tinker with here are the tubes and bias. Some will swap out components. But only the super geek will alter the actual design of the amp itself.
These are the amps that you see all the time on amazon. They can range from portable USB Amp/DAC combos to stand-alone units, to a stacked Amp + DAC. Stacked just means that the Amp sits on top of the DAC. A simple way of illustrating how to hook it up:
Computer/laptop —> DAC —> Amp —> Headphone.
This is a relatively simple way of illustrating it. Most amps need a digital to analog converter so that your brain can make sense out of the numbers. It functions much like an audio interface. The sound is a jumbled mess until it is converted to a signal that our brains can process. This signal is meant to be of a much higher quality than your standard built-in DAC that comes with your laptop or CPU.
Solid-state amplifiers are said to be more neutral and aim to reproduce the music as accurately as possible. They by contrast are a lot more stable than tube amps but are harder to tweak and modify by the user. Again, some will say the opposite. It really does come down to a matter of preference as well as raw experience.
As far as solid-state, in the end, it may be cheaper to just replace the amp altogether than go through the hassle of repairing it.
They are also a lot more affordable and are perfect for enthusiasts just starting out.
For instance, the AKG K701 and K702 both have impedance ratings of 62 Ohms, which would indicate you don’t really need an amp until you look at their Sensitivity rating of around 91dB/mW. Basically, this means that both headphones are very inefficient and require quite a bit of power from an Amp to reach an acceptable volume level.
Lower impedance headphones typically have higher sensitivity and are thus more efficient, but the K701/K702 are exceptions here.
Some people simply won’t buy an Amp/DAC even if it is recommended, because they would rather try out the headphone for themselves first. This is a valid stance. You can always add one later if need be. How to choose a headphone amp!
Ah, the fun part. I won’t really go into headphones specifically, but I will say that anything with a 250 Ohm rating and above almost requires separate amplification and is mandatory. Some would argue that a lot of impedance ratings below 250 require one, A lot of people claim the 300 Ohm Sennheiser HD 600 sounds just fine from a standard headphone jack or portable device! I suppose it depends a lot on the headphone themselves, as well as your ears and preferences.
Bottlehead Crack. It’s an OTL (Output transformerless). This one is used a lot with the HD 600 and 650. It’s great for enthusiasts wanting to get their feet wet with a DIY project. It also does extremely well with a wide variety of headphone models like the Sennheiser HD600!
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, pray, rap, make beats, take photos, record videos, graphic design, and more. His sense of humour, coupled with a knack for excellence and strict attention to detail are what allow him to stand out in an crowded industry.