L0rdGwyn's DIY Audio
Jan 15, 2021 at 11:30 PM Post #1,786 of 6,805
I own an Atticus. @L0rdGwyn I will forgive your comparison to DT1770 since you never auditioned the Atticus. Not even the same league, IMHO, and the signature of ZMF is so much more pleasing and musical :L3000:

So how much do you want for your Atticus? Seems like you're about due for an upgrade to a Weston 981 Type 3 tester, right? :stuck_out_tongue_closed_eyes: I have a pretty one almost ready to go. :smile:

Weston Finished.jpg
 
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Jan 16, 2021 at 12:59 AM Post #1,787 of 6,805
So how much do you want for your Atticus?
Sorry buddy - I cannot let it go since I am a hoarder collector :wink:
I would recommend contacting Zach, and ask if he has a B-stock Atticus, or maybe a unit that was on a reviewer's tour. Would make it a little cheaper if he does, but still not gonna compete with 1770...
 
Jan 16, 2021 at 4:13 AM Post #1,788 of 6,805
Jan 16, 2021 at 5:21 AM Post #1,789 of 6,805
I own an Atticus. @L0rdGwyn I will forgive your comparison to DT1770 since you never auditioned the Atticus. Not even the same league, IMHO, and the signature of ZMF is so much more pleasing and musical :L3000:

Oh I have heard the Atticus, in fact I used to own it, I have never heard the DT1770! I don't doubt the Atticus is the more musical headphone, but it is also more expensive, if price is a factor.
 
Jan 16, 2021 at 5:25 AM Post #1,790 of 6,805
I must be drunk when I sold off my Eikon and Atticus at 2/3 of the price I paid for after one year.

My Atticus has the Padauk wood ! The cherry one is Eikon.

That's Feliks Euforia and my cray computer.

20170923_051329.jpg
 
Jan 16, 2021 at 5:49 AM Post #1,791 of 6,805
I must be drunk when I sold off my Eikon and Atticus at 2/3 of the price I paid for after one year.

My Atticus has the Padauk wood ! The cherry one is Eikon.

That's Feliks Euforia and my cray computer.

20170923_051329.jpg

I have thought first edition Atticus Eikon will be collector's items in ten years, I wonder what prices they will command :)
 
Jan 16, 2021 at 5:53 AM Post #1,792 of 6,805
Got some more crazy transmitting triodes yesterday, Gammatron HK54. These monsters have a 50W plate dissipation and a 5V / 5A filament, safe to say you could cook / pulverize an egg on these babies when biased to max plate dissipation.

IMAG2952-2.jpg

Here is a datasheet. Will attempt to trace these at some point although I have had some issues obtaining curves with the 3C24 thus far.

http://www.r-type.org/pdfs/hk54.pdf

It is nearly 6AM here, time go to finish the filament supply for the 841 amp.
 
Jan 16, 2021 at 6:21 AM Post #1,793 of 6,805
So how much do you want for your Atticus? Seems like you're about due for an upgrade to a Weston 981 Type 3 tester, right? :stuck_out_tongue_closed_eyes: I have a pretty one almost ready to go. :smile:


Very nice tester. :slight_smile:

As far as closed cans go, I agree that the Atticus is killer...warm...great bass and especially the mid bass.
Someone has already mentioned B stock, so that could be an option as well as the classifieds here. I think ZMF at some point will be coming out with a more affordable option and I would assume it would still have Zach's house sound,which is great to my ears.

You could also go with the very cheap route of Chi-Fi iems...what you get for $50 - $100 these days is pretty insane.
 
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Jan 16, 2021 at 8:10 AM Post #1,794 of 6,805
Filament supply is done. This amplifier uses filament bias on the 841 tubes. For those that aren't familiar, this is a type of fixed bias available only to DHTs. A resistance is placed in series with the filament supply and the bias is generated by the voltage dropped across this resistance. The enamel wirewound resistors shown are 3ohms and will generate 3.75V of bias with the 1.25A filament current of the 841. This is really only practical with DHTs that do not require high bias voltages on the filament as the size of the resistors starts to become impractical. Take, for example, a 300B with 70V on the filament with a 1.2A filament current. That would require a 58ohm resistor dissipating 84W, so realistically, would need to be something like a 500W resistor, massive.

IMAG2955-2.jpg

So glowy, so purdy.

DSCF6340-2.jpg

B+ supply is next.
 
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Jan 16, 2021 at 8:28 AM Post #1,795 of 6,805
Filament supply is done. This amplifier uses filament bias on the 841 tubes. For those that aren't familiar, this is a type of fixed bias available only to DHTs. A resistance is placed in series with the filament supply and the bias is generated by the voltage dropped across this resistance. The enamel wirewound resistors shown are 3ohms and will generate 3.75V of bias with the 1.25A filament current of the 841. This is really only practical with DHTs that do not require high bias voltages on the filament as the size of the resistors starts to become impractical. Take, for example, a 300B with 70V on the filament with a 1.2A filament current. That would require a 58ohm resistor dissipating 84W, so realistically, would need to be something like a 500W resistor, massive.

IMAG2955-2.jpg

So glowy, so purdy.

DSCF6340-2.jpg

B+ supply is next.


Sure is a nice glow and those tubes are look to be made very rugged.
 
Jan 16, 2021 at 8:40 AM Post #1,796 of 6,805
I must be drunk when I sold off my Eikon and Atticus at 2/3 of the price I paid for after one year.

My Atticus has the Padauk wood ! The cherry one is Eikon.

That's Feliks Euforia and my cray computer.


Great pic UT. Wonderful collection of cans! Does not seem like that long ago.
 
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Jan 16, 2021 at 10:29 AM Post #1,798 of 6,805
Sure is a nice glow and those tubes are look to be made very rugged.

Thanks! They will last an eternity where they are being biased (but of course I have like 6 extra pairs, just in case :)).
 
Jan 16, 2021 at 2:45 PM Post #1,799 of 6,805
Got some more crazy transmitting triodes yesterday, Gammatron HK54. These monsters have a 50W plate dissipation and a 5V / 5A filament, safe to say you could cook / pulverize an egg on these babies when biased to max plate dissipation.

IMAG2952-2.jpg

Here is a datasheet. Will attempt to trace these at some point although I have had some issues obtaining curves with the 3C24 thus far.

http://www.r-type.org/pdfs/hk54.pdf

It is nearly 6AM here, time go to finish the filament supply for the 841 amp.

Another connoisseur of fine tantalum plate transmitter tubes I see :wink:

My collection of 4E27A tubes so far:

IMG_20210116_120747.jpg


1610825616895.png
 

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