Hi-i am not really into headphones,but i might want to in the future.
Can i use the output from a DAC to feed headphones,or failing that the output from a valve pre ?
If so how ?
Headphone amp ?
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pre65
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#1 Headphone amp ?
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
#2
Hi Philip,
Output from a DAC: assuming you have a volume control here (otherwise, you'd be flat out volume all the time), you'd need a "two phono plug to jack socket" lead to make the connection and then you'd need to look at the headphones' impedance and how that would react with the DAC o/p voltage and o/p impedance.
Output from valve pre-amp: you've got the volume control, but still similar issues re. connections and electrical characteristics.
Unless you're talking Stax or similar, with their own energiser/pre-amp.
Be better to buy a cheap h/p amp (Creek, Project) or build one (WD do a valve kit), I'd have thought...
Output from a DAC: assuming you have a volume control here (otherwise, you'd be flat out volume all the time), you'd need a "two phono plug to jack socket" lead to make the connection and then you'd need to look at the headphones' impedance and how that would react with the DAC o/p voltage and o/p impedance.
Output from valve pre-amp: you've got the volume control, but still similar issues re. connections and electrical characteristics.
Unless you're talking Stax or similar, with their own energiser/pre-amp.
Be better to buy a cheap h/p amp (Creek, Project) or build one (WD do a valve kit), I'd have thought...
#3
Phil,
If you want to try headphones I recommend you build the Starving Stdent Headphone amp (assuming you can source the 19J6 tubes). It can be built for beer money and sounds great. If you can't find 19j6 tubes you could always use 6j6 and substitute resistors for the tube heaters in the MOSFET load. you would need a slightly bigger power supply and a egulator or big resistor to drop the voltage for the 6 volt heaters. I'd do both heaters in series if I used 6j6. In fact, I plan to grab up a bunch of 6j6 for when I run out of 19J6.
If you want to try headphones I recommend you build the Starving Stdent Headphone amp (assuming you can source the 19J6 tubes). It can be built for beer money and sounds great. If you can't find 19j6 tubes you could always use 6j6 and substitute resistors for the tube heaters in the MOSFET load. you would need a slightly bigger power supply and a egulator or big resistor to drop the voltage for the 6 volt heaters. I'd do both heaters in series if I used 6j6. In fact, I plan to grab up a bunch of 6j6 for when I run out of 19J6.
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little eddy
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#6
Another cheap hybrid design using 12V supply and uses a 12AU7: http://diyaudioprojects.com/Solid/Tube- ... phone-Amp/
#7
How can I convert a sony ericson headphone , to connect it to my lap top and use it for skype?? I bought a sony ericson headphone, without realing it was for the mobile phone. Is there any wire of some sort that could connect to my laptop the plug from the headphone( and mic combination) , which is compatible with a socket in the mobile but not the laptop.
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Last edited by labiteena on Sun Dec 06, 2009 5:16 am, edited 1 time in total.
#8
Depends on the connector that is on the headphones. You would normally need to get the headphone to end in a pair of 3.5mm jacks.
I think the main reason why Europeans no longer want to travel to the USA is the big time difference. For me, it's now 7pm. In the USA it's now 1933.
#9
Was thinking about this phil. build a mosfet source follower and feed it with your valve preamp. You should be able to do that for under $30. If you don't like it your down side is $30 and you learned about source followers in the process. You can feed the 3 channel version with a pair of cheap switching supplies. +- 12 volts works well.
http://phonoclone.com/diy_sze.html
http://phonoclone.com/diy_sze.html
"The magnet wire used to come from Radio Shack. In keeping with their policy of figuring out what the best products are and discontinuing them they no longer have it." - Max Robinson
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pre65
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#12
Not me sunshine.rainy22 wrote:As we all know
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
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pre65
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- Location: North Essex/Suffolk border.
#13 Re: Headphone amp ?
I'm thinking about headphones (again) for serious listening with CDs.
I use headphones almost every day for YouTube, but I rarely listen to my main system at all these days.
I'm not wanting to invest any time, or money, at the moment, so I've been looking at what kit I have. First up was my first CD player (1980s), a Yamaha CDX810. By some accounts the headphone amp in this is quite good, and it has a variable output. First try was positive, so it's up for further listening.
Second up was the headphone socket on my Caiman DAC, but even at full volume it was a bit "quiet", and sounded a bit flat.
Lastly my NEC multispin CDR602, of which I have 2. Once I found where I'd hidden a disc caddy it was put to the test and sounded much like the Yamaha, but perhaps a teeny bit more "vibrant".
My headphones are JBL, not sure what model and were a free gift from BT some years ago. They sound OK and a lot better from my Koss ones from the 70s.
So, I'll try a varied selection of CDs in the coming weeks and see how I get on.
I use headphones almost every day for YouTube, but I rarely listen to my main system at all these days.
I'm not wanting to invest any time, or money, at the moment, so I've been looking at what kit I have. First up was my first CD player (1980s), a Yamaha CDX810. By some accounts the headphone amp in this is quite good, and it has a variable output. First try was positive, so it's up for further listening.
Second up was the headphone socket on my Caiman DAC, but even at full volume it was a bit "quiet", and sounded a bit flat.
Lastly my NEC multispin CDR602, of which I have 2. Once I found where I'd hidden a disc caddy it was put to the test and sounded much like the Yamaha, but perhaps a teeny bit more "vibrant".
My headphones are JBL, not sure what model and were a free gift from BT some years ago. They sound OK and a lot better from my Koss ones from the 70s.
So, I'll try a varied selection of CDs in the coming weeks and see how I get on.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)