Yes agree with edstrelow . I have had many breakages of my 007 MK1  all at the headphone clamping  position . To test I used an analog multimeter on the ohms range  using a fine needle I stuck it in ,inside the clamp and  another further down  the same cable conductor and metered both for...

Not someone who just plugs a part in and thats it  I noticed that my system was now a bit too open for me personally . This is not in any way -shape or form caused by the 2Qute  as it only reproduces  what it is given ,no my Stax SRM-727-mk 2 which I have heavily modified from sounding -well...

Just bought one 2 days ago  -my equipment - Cyrus xtse2+ pu -own built buffer using high quality audio chips - Stax 727 mk2 -heavily modified by me -Stax omega 2 mk 1 earspeakers . I found it to be very open and clear reproducing exactly whats on my cd,s great detail and contrary to some reports...

Johnjen I am very well aware of the series/parallel connections I have an AVO MK4  which I have used for decades before that a Taylor 45C I am referring to the  tube tester you are working on . If you dont believe me then check it out on the net.

Johngen it wont analyze  12 V tubes as it has only a 6.3 V supply. small double triodes that are dual heater/filament working are wired in parallel.

Very good advice Monte Verdi .

Soldering is just down to patience  the right size of soldering iron for the work you do and making sure the solder flows  over the correctly heated component with out creating a high resistance joint . Its a basic part of -do it yourself - that you should learn , if you cannot find a friend...

For some answers to your Mylar problem head to= www.2spi.com/category/polymer-films/  for a seller of it   also - www.gearslutz.com/board/geekslutz-forum/13668-mylar-source-html -surplus metallizing  chamber from an old electron microscope -vacuum gold depositing etc.  

You could try contact cement which is said to glue Mylar this comes in various varieties like a spray can etc it does involve a drying process.

I didnt bother replying to this post but as it is still on the go then in answer to it . Yes not through an "ideal " capacitor but tell me what electrolytic capacitor is ideal ?  You should know that electrolytic capacitors are far from ideal and show =RL-- leakage resistance while its starts...

 Hello again  okw3188 hope you got what I sent as there are 1000,s of pass transistor diagrams designing a truly individual one would involve many components and go against the principles of keeping it easy to build every person has their own level of electronic building expertise so this is so...

I have been reading about this DAC and like its design especially the discrete class A output . But I also noticed that several people commented on the earth the Chord 2Qute not having one and only a two pin mains connector that too I agree with as earth induced noise can cause problems . While...

Glad you are happy okw3188 I spent a year or more making modifications to see if they made a positive improvement to the sound quality rather than just a change of tonal quality. I believe the policy of Stax in removing the negative feedback in the 727  was in relation to a fad in the UK of the...

You,ve got it  okw3188 -third gold finger/spade in from each side ,same applies to the 717 . If you want the highest quality  remove the two SMD resistors and replace with a single 225K or high quality combination that totals it BUT they must be 500 V working this is very important if you can...

That would take me a bit of getting used to okw3188 but I like Australia for the quality of life there.

Hello Audioholic123 -Yes I was born in Glasgow went to live in Clydebank (as a baby )  came back to Glasgow and now live in a wee fishing village in the East-Neuk of Fife at the moment there is fog and sea mist rolling into the village just like James Herbert,s =The Fog. .Scorching sunshine all...

Hello okw3188 the reason I asked about Perth is that I live 50 miles from Perth (Scotland ) I think many Scots settled in your area as ( I am told ) it is like Scotland in certain aspects or maybe just because they liked the area. Anyway I removed my 727 left-hand board to look at it again as it...

Hello okw3188 Which Perth do you live in ?  Its been a long time since I  posted much on this but are we talking here of the 2 vertical smd  resistors in series  in the feedback in the Stax 727 ? if so I left them as they are but I have now re-instated overall feedback from where the 717 ...

I would disconnect what you have already soldered  that should leave a "live " and  an earth connection (screen ) on each . Borrow an AF signal injector  and connect to each cable that goes to your drivers in turn . It should sound  equal on each side at  1 kcs  then try at 5kcs  it still should...

Its possible that I have not put a concise rely to Fuzzzy . When I say the latest feed-back I am referring to my own modifications to as detailed in previous posts above .The Stax corps had a "brainwave " to remove most if not all feedback from its 727 to make it more open in practice this wasnt...

I realise most people like the latest Stax but not everybody ,it was aimed at them. But ,yes you can have too much detail as it gets in the way of the music ,as you are listening to the detail not the music .I speak from a UK perspective as most of the "golden ears " over here come down pretty...

Hello fuzzzy if you have had many years of electronic service then you will know about primary feedback and secondary feedback-aka nested feedback . Everything I have stated I carried out myself on the 717 and 727. Electronics isnt some black magic anybody can do it if they read up on it and...

There are many who like extreme detail both with the amp and the headphones but that does not apply to some who like a smooth musical presentation. It might not appear to some that the 717/727 boards are not really much different ,the main thing being the twin output devices on the newer board...

I noticed some people have trouble adjusting the balance and near zero voltages  I do not think that the ones fitted are up to the job considering the price of the total unit. To make life easier and up grade them I fitted Multi-turn presets .These allow a much finer adjustment of the voltages ...

I had forgotten to add that the feedback resistors total 300K OHMS in the unmodded version . If you check the circuit diagram you will see that it is a     version of a widely modded standard circuit. All the other versions show the series resistance as 200 K OHMS from the output to the input I...