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View Full Version : Tube amp (Little Dot MKIII)


vixro
11-14-07, 04:48 PM
Alright, I just switched from my opamp amplifier (PIMETA with maxed out parts) to a Little Dot MKIII tube amplifier and the difference is very very nice. It's hard to consider it any better or worse as I have hardly any any burn in time and this thing tends to shine after a few hundred hours of use but out of the box it still sounds great.

Physical changes:


The amp is longer.
The amp is hotter.
The amp is taller.
It's built in China instead of self built in the USA.
It uses tubes instead of opamps.


Sound changes:


The bass has a bit more punch, but has slowly started to become more mellowed out (which is a good thing) since I turned it on.
Mids and highs are more angelic sounding. Still a bit harsh right now since it's still burning in, but it has the quality I am looking for. Very sharp sounding on loud female voices currently though.
Nice wide soundstage, this is still very similar to the PIMETA but probably attributed to my headphones and cabling more than anything.
Piano really seems to shine, I had almost a hiss at high tones on the pimeta, but the MKIII comes really clear on piano.
Rock music is slightly muddled, that low guitar sound needs to clear up a little bit. The rifts sound amazing though as is.




I think after some major burn in I will see some big changes after 100 hours, 200, and 400. Probably clear up some of the really strong bass and the harsh/shrill highs. Anyway, I am very happy with the switch and both ran about the same price after building. The little dot MKIII can be bought off of Ebay from the builder DavidZheZhe (the official/warantee builder). It runs you about $199 + $45 express shipping from China (the only option). The pimeta after upgrades, repairs, building the case and everything cost around the same price plus build time.

This is a fantastic little amp for the price and I would recommend it for anyone that has high quality headphones and is looking for an already built amplifier.

MY setup:

Sennheiser HD580 headphones (300ohm, so I have the Gain set to very high, at 10 on the amplifier. There is a little switch at the bottom that allows you to adjust it between 4 different settings) with HD600 grilles for a wider soundstage.

Cardas cabling, including the interconnect between the sound card and the amplifier. These were custom made for me (5' interconnect to mini-RCA and 10' HD650 Cardas headphone cable) and ran about $225 total cost. The actual cost if you buy them comercially is about $200 for the 10 footer and if you could find an interconnect it would be about $100-$110. I got mine from www.solozaudio.com and he actually frequents these forums and the head-fi.org forums. The cables give you clearer sound, it's so hard to describe. I can't switch back and forth and tell you the exact changes because I don't have the original cable anymore but I can try to sum it up a little bit.

You get clearer sound. More defined bass. You can pick out specific sounds and instruments easier. Changes the soundstage, though hard to describe the best way I can say is that it just allows you to actually choose exactly where the instrument is. This helped me in games even more because in Counter-Strike I can not only hear the direction of footsteps I can hear exactly how far away and at exactly what height. Somebody could reload their gun and I could tell you their exact position to the inch.

I also have a Beyerdynamic leather headband. It's black and matches the rest of the headphones better and it feels soft after a long breakin period.



Anyway I just thought that I would share, the little Dot Series is a very good pre-made amplifier at an affordable price. If you were looking for something a bit higher end you can check out the Little Dot MKIV and MKIV SE (and MKV's are to be released soon). Peronsally I think the 3 sounds great and it's the perfect midrange for those that like high sound quality but aren't quite on the level of an addicted audiophile.

Here is a buy it now:
http://cgi.ebay.com/Little-Dot-MK-III-Headphone-Tube-Amplifier-Pre-Amp_W0QQitemZ190173794733QQihZ009QQcategoryZ3280QQ ssPageNameZWDVWQQrdZ1QQcmdZViewItem

And here is the seller that you can message for ones that aren't listed (he will put up a buy it now for you) or if you have any questions.

http://myworld.ebay.com/davidzhezhe/


The amp does come with interconnect cables and an adapter, but I found that custom interconnect cables work better to reduce any vibration or ground looping issues you may encounter on the MK3 (which were solved in the MK4 and later with stock cables.), because they are better shielded.


If you are curious about what a headphone amplifier does, I can answer you with a huge story or a somewhat simple answer. A headphone amp will 1) give more power to your headphones. High impedence headphones like the sennheisers have 300ohm and need a bit more power than just a sound card to fully open them up. It allows all of the sound to be played without slowdowns or volume fluctuations. The best example can be if you were listening to music and playing a game, if you had a loud explosion within the game then your music volume would actually fluctuate or go down a little bit. The amp can also change and open up the sound that you already have. Each amplifier and it's parts (opamps or tubes, or hybrids) has its own unique set of sound. You can find what fits you best and allow you to listen to your music as it was supposed to be heard. Think of it like a hardware equalizer only on 100 different levels.

Best way to test if you would benefit from an amp or not on your headphones is to plug your headphones into a home receiver. Listen to a song on your computer and then listen to the same song (from the same CD) on your home receiver. Your receiver sound will be amped and your computer sound will not. While this isn't an exact replica of what you will notice with a headphone amplifier (you have different sound sources) it will give you a general idea on how your headphones will sound when amped and if they benefit at all from it.

Sir Barton
11-14-07, 06:35 PM
Sounds like a hell of an amp. I know the MKII had excellent reviews...Im assuming the MKIII is a better sounding amp. Id love to get one of those myself but dont have headphones good enough for it. Does it have RCA outs as well as ins? How does it sound as a preamp to a stereo amplifier?

vixro
11-14-07, 07:44 PM
Yes, it does have RCA outs as well as ins so it can be used as a pre-amp. I have only used it as part of my computer setup so I don't have an opinion on the pre-amp quality of it, sorry.

TTP
11-15-07, 01:14 PM
I've used an Onix SP3 with my setup. The sounds are alot warmer. But since my setup is close to my PC setup, the heat gets bothersome.

vixro
11-15-07, 06:13 PM
Yes, the heat is very warm on tube amps. The pimeta that I used was quite cool to the touch, maybe lukewarm during use. I can compare the heat of this tube amp as closer to warm/hot to the touch but I like the sound better.

Brando
11-15-07, 08:11 PM
Hey random question. Does your x-fi crackle? Did your old one? Does using an amp fix it?

vixro
11-15-07, 11:29 PM
If your x-fi crackles, its from heat issues most likely. Certain driver sets also crackle compared to others.

I found that it was hit and miss with the x-fi having problems, but installing from the CD + the latest driver set installed over that seems to be the best performance I've seen yet. The crackling was generally software related and fixable. IF the problem you have is happening, applying an amp will increase the severity not reduce it.


That being said, my current x-fi and my xtrememusic performed the same in terms of crackling. They both have problems with specific driver sets but were always fixable via a reformat or a cleaning and proper install of the drivers. Like I said though, if you are experiencing any crackling or static whatsoever before applying an amp, the amp will only make it stand out more.

You can eliminate heat problems by applying a heatsink to the x-fi chip (if it doesn't already have one) or by putting a fan near it to blow air on the card. IF this doesn't change the problem then it could be software related.

Also keep in mind the source of your music or cables, it's possible there is a dirt built up where your cables are terminated if you're hearing static or crackling. The source of music can often come from actual vinyl records that do have some static on them. Try listening to multiple versions of a song, or different songs. If all else fails make sure to try a different install technique for the drivers or a different set of the drivers. Installing only the web release doesn't always contain the material you need. There are ISO's that you can download of the original install CD. You may have to search pirate sites for them but I assure you they are legal and released by Creative.

While the x-fi is a great card, the drivers leave much to be desired. I am confident that if you do have crackling you can solve it.

Brando
11-16-07, 12:06 AM
I think I was wrong. Looks like I was just hearing imperfections in the source. I tried a couple movies and some different songs at high volume and they were totally clean. I also noticed theres never been any problem in game which is where other people seem to get it the worst. Just certain mp3's have bad compression or a hiccup in the download I guess. Sorry about that. False alarm. Thanks anyhow.

vixro
11-16-07, 12:35 AM
Yep, I had the same problem while listening to di.fm premium. IT was 192kbps and I thought I had a problem. Sometimes, it's just the source of the music. Turns out many of the songs I had been listening to were being played directly from their vinyl source and crackling is just a side effect of that medium.

Brando
11-16-07, 12:39 AM
I guess it must be something like that I'm not sure. I noticed sometimes it's more than just the sound of a record which is whats throwing me off. Like youtube clips that are recorded way too high or just crappy recordings in general are making weird distortions. Still not 100% sure on this but I know that the stuff I tried that was definitely good quality was playing flawlessly.

TTP
11-16-07, 01:55 PM
The one time I got some crackling on my XFi was due to a recent driver update. I removed all the drivers and reinstalled and it was fine afterwards.

Brando
11-16-07, 07:39 PM
Well I listened through Aenima by Tool at high volume and didn't notice anything wrong. That album has some pretty high highs and low lows with a lot going on so if that doesn't make my phones\card crack I don't know what will. Guess it was crappy mp3's causing issues. Sorry for jacking your thread.