Portable tube amp from china?
Sep 6, 2012 at 10:58 AM Thread Starter Post #1 of 809

voodoo do-er

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what are your guys thoughts on this amp

http://www.ebay.com/itm/Portable-Rechargeable-HiFi-Tube-value-vacuum-headphone-amplifier-amp-battery-SIL-/110925530276?pt=US_Home_Audio_Amplifiers_Preamps&hash=item19d3ad44a4

I almost want to buy one out of curiosity alone. but I know I probably should not

edit:
BTW don't go telling me what to buy or link a good amp
I just want to know about this one.
 
Sep 9, 2012 at 5:54 PM Post #3 of 809

Spriggs

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first i would like to say this is basicly a remake of the muse portable tube amp you can find another head fi post about that and I have just purchased this little bear and a ttvj millet hybrid tube amp and will be making a review and comparison 
 
Sep 9, 2012 at 7:39 PM Post #4 of 809

voodoo do-er

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first i would like to say this is basicly a remake of the muse portable tube amp you can find another head fi post about that and I have just purchased this little bear and a ttvj millet hybrid tube amp and will be making a review and comparison 

I thought it looked like a muse amp

btw aren't muse stuff copy's, so it would be a copy of a copy ?
 
Sep 25, 2012 at 5:51 PM Post #7 of 809

Spriggs

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So the amp arrived today in the mail which took allmost 4 week shipping. and my first impressions werent great the little bear has a a horid pot and when ever you touch the thing it makes noise but as long as you dont change volume much during a song its fine. The sq at first was pretty murky and warmed up a little later (burn in/the tubes warming up) but all in all the sq isnt anything special. Now the build quality isnt amazing but it works, the tube heats up so much the whole amp feels like it will melt after like an hour or so. If you want a fun toy to mod this will be nice if you want a tube amp to listen to music with and have it sound a amazing go find a TTVJ portable hybrid tube amp.
 
Sep 26, 2012 at 4:22 AM Post #9 of 809

supracuhz

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Quote:
So the amp arrived today in the mail which took allmost 4 week shipping. and my first impressions werent great the little bear has a a horid pot and when ever you touch the thing it makes noise but as long as you dont change volume much during a song its fine. The sq at first was pretty murky and warmed up a little later (burn in/the tubes warming up) but all in all the sq isnt anything special. Now the build quality isnt amazing but it works, the tube heats up so much the whole amp feels like it will melt after like an hour or so. If you want a fun toy to mod this will be nice if you want a tube amp to listen to music with and have it sound a amazing go find a TTVJ portable hybrid tube amp.


Do you regret your purchase??
 
Sep 26, 2012 at 5:15 AM Post #10 of 809

reddragon

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Quote:
So the amp arrived today in the mail which took allmost 4 week shipping. and my first impressions werent great the little bear has a a horid pot and when ever you touch the thing it makes noise but as long as you dont change volume much during a song its fine. The sq at first was pretty murky and warmed up a little later (burn in/the tubes warming up) but all in all the sq isnt anything special. Now the build quality isnt amazing but it works, the tube heats up so much the whole amp feels like it will melt after like an hour or so. If you want a fun toy to mod this will be nice if you want a tube amp to listen to music with and have it sound a amazing go find a TTVJ portable hybrid tube amp.

 
 
 
what is the name of the ttvj portable hybrid tube amp? cant seem to find it...
 
Sep 26, 2012 at 1:34 PM Post #11 of 809

Spriggs

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the amp has promtly broken in its first night of use (tube blew due to bad circut design to much filiment voltage)and though i can say i regret my purchase but there are better things to spend your money on.
 
Sep 26, 2012 at 11:07 PM Post #14 of 809

Spriggs

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Thanks, how much is it and do you have it? If you do, hows the sound quality?

i do have it and i have to say it sounds quite amazing better than the new ttvj's i say cause its warmer sounding much more tube like(probabbly cause there are real tubes) its also better than the alo audio continental also cause the alo does the tube part wrong(they did it in such a way the tube is rather usless and dosnt affect sound) now some one is going to disagree with me but that is my personal opinion. now on price not sure how much it goes for now. just patienly look on amplification for sale forum im sure one will come up eventually. Cheers
 
Sep 27, 2012 at 12:33 AM Post #15 of 809

goodvibes

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It's going to basically be something like this simple phase inverting ne5532 circuit with those electrolytic caps (c4, c8) coupling the output and a tube thrown in before the opamp. The tube serves no function other than giving you more coloration, complexity and neat factor.

If you look at the battery, there's a single voltage rail which is why it will be this or a very similar circuit. There's no rail-splitter etc. The tube voltage will be too low while still getting too hot for that arrangement and besides the discomfort, imagine what the heat will do to the battery.
 

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