Headphone Amplification

They look pretty neat. Here is a link to the site in Japanese, but it shows a bunch of pics: [url=http://www.soundhouse.co.jp/shop/SearchList.asp?i_type=m&s_maker_cd=1617]IZO

Well, Just received my new Woo 6 amp. Man this thing is beautiful! Extremely well built, it has plenty of muscle to drive my K701's to very loud levels. This is my first tube product, and I must say I'm very impressed! I can't believe how good this old technology can sound. What really impresses me the most , is how quite the amp is. Music seem to flow from a dead black background. I only have about 12 hours on my amp, so an in depth review should wait I guess, although I'm not one of those die hard believers in burn for electronics, I do think it affects dynamic drivers though. So far the Woo is a class act, and Jack is a wonderful, passionate, business man, who pays a…

Hi, Newbie here. I bought a pair of Stax SR-404 Signature and want to build an energizer/amp myself. I'm not a big tube fan, although I can see the value in using them. Instead, I'd like to build a fairly compact solid-state version. Does anyone have any links or references to interesting designs? Thx D.

Is this true? Has anyone opened up the HPA-1? And are there schematics for the HPA-1? Danke

Reference Amplifier for Electrostatic --------->>>>>>>> what do you think? does it look good or bad? found this on the net today

Dear all, I’m currently considering to up-dating my STAX-compatible HeadAmp with an extra-option of a variable Polarization Voltage . Reportedly, the SR-007 Mk2 may benefit from such a higher voltage Who has experience with such a feature ? Thanks & Regards Urs

http://cls.audiogon.com/cgi-bin/cls.pl?preatube&1192058776 I'm not sure what it is, or what tubes those are...but it does look funky enough to be a "collector's" amp.

Hello to all, I am looking for the original SRM 717 circuit diagram and could not find it with quick search - anybody can help ? Philipp

Hi, This is my first post on the forum. I have a STax SRM-323MK2 driver unit and a pair of SR-303 headphones. I would like to do some checks on the voltage levels (AC and DC if possible). Is there any service information or a schematic diagram available for the SRM-323MK2? Thanks.

I was reading a lively thread on HF (something about rudi and a new amp) and realized that my knowledge of measurements and most things to do with engineering is sorely lacking. I was wondering if anyone had any suggestions about learning about the engineering aspects of amps,etc (ie good design). I am mainly looking for a basic understanding to become a better consumer (or be less of an idiot). Any help would be greatly appreciated. Thanks

So I got one of them non-pro Stax adapters off of eBay, but I have pro headphones (with the higher charging voltage, or whatever it's called). Anyone know of a way to change the voltage, besides selling it off and buying the right one? I'm thinking it's just a transformer tap, but I'm also thinking that the tranny that's already in there probably won't deal, so I'm thinking I'm going to have to get a new transformer...which is alright, as I suspect I'm going to want to (a) ground the thing (it currently only has a two-prong power cord); and ( replace the speaker wires with something better. So what I'm saying is, I'm already going to be inside the thing mucking around. So…

I have been reading up on these and wonder if they are any good. If anyone can shed light on these, or you have these items yourself then please could you let me know what you think. Shall look forward to hearing from others at some stage. Sincere Thanks

Anyone here heard both? Thoughts?

Well, I have decided to get the Woo Audio 6. This should have no problem driving my 701's, is built like a tank, and from what I have heard has a nice mellow sound.

I am looking at some new output tubes to try in my latest idea. The 1626 looks good. A low mu and lower power output tube so if the amp is transformer coupled I will get a good half to three quarter of a watt. Not to much .... not to little and only $5 a piece. I have a lot of 6S4A's and 6P14P-EV's but I want a cool looking coke bottle shaped tube. I have some coke bottle shaped pentodes like the 6Y6G .... and they have the advantage that they have the same pinout as a bunch of other pentodes. But the 1626 is a true triode like the 6S4A and will likely sound better; although you never know. But do I need to break the mold and start using a true pentode .... or atleast …

details -> scheme -> psu -> >Max output voltage: 280Vrms It doesn't seem like a very powerful thing. What do you think?

http://www.angela.com/ http://www.thetubestore.com I'm looking to try out more tubes for my amp and the first thing i want to know is who should i buy them from.

Hey everyone, Ok, so I have an SR-71 which I am happy with for the most part, but currently both my DAP's are good only from the headphone out (Rio Karma/iAudio X5); this leads to a problem I'm experiencing with piano passages and clipping. It happens too often for my liking and unfortunately, Ray Samuels hasn't been able to help other than to suggest that I drop the volume out down to 25% of full volume (at that output I have a hard time driving Grados with the amp) or to get a better source So instead, I've decided that maybe I need to get a new amp. Can someone suggest something helpful to me? Is Ray right(only solution is a better DAP)? Is there a better soun…

I'm going to be shipping a PINT amp to Romanee, as I wanted to give him the opportunity to hear it. If anyone else in the NYC area, who knows Romanee (i know a few of you do!) and haven't heard the PINT, let him know that I sent you, and hopefully, he'll be able to accomodate. Of course, if you don't want to hear it, then poo on you

Hi, I'm asking for help because I can't understand ... so i installed in my 006 two tung-sol 6sn7gtb tubes (American NOS)with about 250 hrs on them (so out burn-in but new), I replaced the adjustment trimmers with multiturns to have more control, I use a ceramic screwdriver, my mains voltage is 220Vac constant, I let the amp warm up for at least an hour (with signal on and volume at about 2) before calibrating, put the volume to zero and select an input with no signal (the 1, which is connected only the 3). .. tester in Vdc...first I adjust the balance or then the offset, then balance again and then offset...then I switch to the other channel now this happens to …

Can you hear the piano on Bob Dylan's Mondern Times, "Spirit on the Water" and if you can, where is it? my mid range set up: Computer>optical Constantine>Woo3, GS1 Listening with my 880s tonight: (stock foobar 9.5, 32 bit, kernel streaming, album@320kpps mp3~EAC With the Woo3 the piano is subdued, on the right and mixed into the music With the GS1, I can hear the piano as a separate instrument, but barely..... lots of air and space to the cut, but I'm having difficulty picking out the piano with the tube amp and can only do it slightly better with the SS. What are you guys hearing? USG

Just because my turntable only has one headphone out, this prevents me from having to pull cables every time I want to listen to a different amp. Does a preamp actually do anything to a signal, or is it just a fancy switchbox? This has always confused me.

Correct me if I'm wrong, but there's no such thing as a new production JAN tube, yes?

Anyone have any good combos they would like to recommend? Currently using Russian 6N6P as driver and Sylvania 6922 as output and a EZ80 in the power supply

in general, do any specific brands stand out among others when it comes to cheap receiver headphone amps? i'm looking for an inexpensive remote-controlled video switching device and a cheap used receiver seems to fit the bill... i remember reading a while ago that the pioneer elite series supposedly have discreet amplification for their headphone out... basically, i'm looking to spend a couple hundred bucks at most and the only thing i care about is that i can switch video sources, so i thought i'd try to narrow it down by something i do care about... i realize most or all will suck compared to a decent separate headphone amp, but i'm just looking for any that s…