Lol, hey, i tried to search and figure out what it is but i couldnt find nething.
JimJ
5,000+ posts
Tangled Up in Blue
Well, Milbert is jacking up the price...they aren't worth that much. I recently had a 2A3 directly-heated triode stereo rig custom built for $700, but I guess that could be considered expensive when the output power is less than 4wpc //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Tubes are more expensive because the technology is different - you need big transformers and lots of design in the power supply, for example. Also, the tubes themselves cost something to buy and replace. But most of it comes down to supply and demand. Most people aren't going to buy them, so the few companies that do are going to charge more.
Diplexers
10+ year member
Logarithmic Robot
I have always loved Zapco, but my vote has to go to kx2500.1. Zapco is a **** fine amp, I just don't like the damping on it.
JimJ
5,000+ posts
Tangled Up in Blue
What's teh output impedance?
Lol, if they only put out that much power, what's the point of them?
JimJ
5,000+ posts
Tangled Up in Blue
Ever heard of efficient speakers? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Power isn't everything, young padawan...
Ya but you could get a normal amp that puts out that power for like $2.
JimJ
5,000+ posts
Tangled Up in Blue
True, but there's a certain..."je ne sais quoi", to flex my limited French knowledge (for our Canadian members //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif)
You could just use MOSFETs in a "regular" topology and be done with it. But there's reasons why sometimes the easy path isn't the best one //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
You could just use MOSFETs in a "regular" topology and be done with it. But there's reasons why sometimes the easy path isn't the best one //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
DBfan187
5,000+ posts
Supa's mom was here!
they're also are rated @ 2%+ THD.
Lol, that still makes absolutely no sense to me though.
JimJ
5,000+ posts
Tangled Up in Blue
That's because you've never listened to one...like anything in audio, it's subjective.
Another thing - you can't directly compare THD+N numbers from a solid-state amp to a tube amp because although the numbers may be the same, it won't sound the same to the human ear. 5% THD sounds drastically different coming from transistors than it does tubes...has to do with tubes producing lots of second-order harmonics which tend to be more "pleasing" to the ear than the higher-order harmonics MOSFETs throw out.
Reading material:
http://www.milbert.com/tstxt.htm
For the physics wonks that really want to know what's going on: http://www.john-a-harper.com/tubes201/
Depends on the mode of operation, but my 2A3's are rated at 5% THD running in Class A1, single ended. Pentodes like the EL84's I'm running in the living room are less. And beam tetrodes like KT88's run even less in push/pull.
Another thing - you can't directly compare THD+N numbers from a solid-state amp to a tube amp because although the numbers may be the same, it won't sound the same to the human ear. 5% THD sounds drastically different coming from transistors than it does tubes...has to do with tubes producing lots of second-order harmonics which tend to be more "pleasing" to the ear than the higher-order harmonics MOSFETs throw out.
Reading material:
http://www.milbert.com/tstxt.htm
For the physics wonks that really want to know what's going on: http://www.john-a-harper.com/tubes201/
The one thing you guys don't realize is that there is something inherently wrong with digital music. CDs sound great, the accuracy is insane, but you lose a lot going from analog to digital. I don't know what you lose, but it's there and you miss it when you finally reclaim it. Ever since getting my vintage Magnavox FM radio / turntable with a vac tube reciever and amplifier, I've been scouring the internet almost every night looking for a vacuum tube headphone amplifier.
bri487
5,000+ posts
Banned
zapco does a lot with anolog/digital switching
JimJ
5,000+ posts
Tangled Up in Blue
If you're looking for a tube headphone amp, I know just the project for you...
And yeah - when you know, you know.
//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
And yeah - when you know, you know.
//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
Activity
No one is currently typing a reply...
Similar threads
- Started by Royburger1977
- Amplifiers
- Started by larrydavid
- Amplifiers
- Started by bubs
- Amplifiers
About this thread
