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LAMPIZATOR THREAD COMMENTS REVIEWS TUNING - Page 7

post #91 of 320
Quote:
Originally Posted by bmichels View Post
 

Just requested a quotation for a  Big7 based  Head DAC :p   

 

This HEAD DAC solution might save me the cost of buying an expensive Headphone AMP like Eddie Current 4-45 or BA !

 

 

I highly doubt the headphone out would be anywhere close to an Eddie Current amp in performance.

post #92 of 320
Not looking to argue with anyone. But if lampi makes one if the best dacs available now
Why would anyone expect anything less than fantastic
In just a few years he has risen to the top of the DAC world
So if he makes one I want one two
One for home and one for office.
Al
post #93 of 320

Yea, after hear my B7, I want their HEAD DAC too. Just do not know the price though. 

post #94 of 320
Quote:
Originally Posted by chengka7 View Post
 

Yea, after hear my B7, I want their HEAD DAC too. Just do not know the price though. 

 

Question is : will a HEAD DAC (based on a L5 I understood) be superior to a TOL Headphone Amp connected to your B7 ?  :o

post #95 of 320

HEAD DAC should be a complete package(amp with DAC), so I can use it in my office. 

post #96 of 320
Quote:
Originally Posted by chengka7 View Post
 

HEAD DAC should be a complete package(amp with DAC), so I can use it in my office. 

 

correct, in this case the HEAD DAC is a no brainer purchase...assuming that when used as a "DAC only" to feed an external amplifier, it is at the level of the L5 DAC it is based on ?

post #97 of 320

Fanboy'izm has a limit...

post #98 of 320

Preproman,

 

I know diddly about HP amps, but I think people are excited because of Lukasz's FBook post:

 

OMG it feels good! The concept I had actually works like a dream. We use balanced DAC output into the push-pull transformer but in this scenario it is not the "bad" push pull because we dont split phase. We keep intact the whole signal in each phase and the transformer is working like two opposite SE amps. The secondary winding sums up the signal into the headphone SE output and while doing it - it cancels out the digital errors from conversion process. We have 30 x iron core headroom which sounds very open and pure, because we used small speaker cores, only primary winding is customized for the DAC. We can drive any headphones even 4 ohm ones. We used 6N6P - the super powerful and clean miniature triode, biased at 25 mA at 200V supply. PSU is also tube so we have a pure tube, zero capacitor, zero resistor headphone DAC. Even my cheapest 10 dollar headphones sound spectacular, and the Beyerdynamics are just a bliss.

 

 

and the preamble:

 

I miss the times when we actually invented and prototyped things EVERY DAY. And never went to bed before hearing them in the main system. Nowdays it is work work work.
All work and no play makes Jack a dull boy.

So it is time to CREATE something. I have the DACs, I have the amps, I have the preamp too. I failed on the phono stage front. Total GRENADA. So my decision is to build a HEADPHONE DAC. N
o, not the headphone amp. but the DAC. There are great synergies and gains to be had if we blend the DAC and head amp into one. Pure tube of course. 

My first choice would be the OTL - a tube amp stage without output transformers. We only need low power and the impedance is high. It seems easy, and I know how to make speaker driving OTL. So what's the problem ?

First problem is that the OTL sounded weird, and very very much "inside the brain". I just did not like the character of this sound. 
Another problem is that to get satisfying volume, I needed so much power that the DAC started to look like a monoblock amp. it is definitely not a small task for small tubes. 

Long story short - a good headphone OTL is a) a can of worms , and b) too expensive project to be done properly and stay in budget.

Now I am prototyping various types of transformer-coupled DACs. Single ended triode, push pull balanced triodes, capacitor couples transformer, airgap, gapless, choke loaded anode follower with transformer, etc. Early tests are very encouraging.

We want to be able to use DAC chip directly coupled to the good triode with just an inch of silver wire, no caps, no resistors - nothing in between. We want to combine DAC output I/V vonversion, analog filtering, balanced to SE conversion, signal amplification and impedance matching - all these features in one tube genius circuit. There will be just three parts in total: Chip - triodes and transformer. 


This week we will finalize the choice of tubes, next week - the choice of transformer.

post #99 of 320

OK - good to see the history behind it.  It will be the first of it's kind..  TOTL Tube headphone / DAC combo unit.  Count me in as interested..  

post #100 of 320

Haha, yea, after first seeing that in his facebook, I go to his facebook everyday for the update. 

post #101 of 320
Quote:
Originally Posted by chengka7 View Post

Haha, yea, after first seeing that in his facebook, I go to his facebook everyday for the update. 

Me too :-). Can't wait to get infos (to décide if I cancel my EC4-45 pre-order )
post #102 of 320
Head Dac's infos are now on Lampizator's web site :-)

Hope to see pictures soon...
Edited by bmichels - 7/21/14 at 5:07am
post #103 of 320

Quote:

 

Originally Posted by bmichels View Post

Head Dac's infos are now on Lampizator's web site :-)
 

 

And the pricing info as well - see http://www.lampizator.eu/NEWDAC/Lampizator/HEAD_DAC_ORDER.html

 

 

 

post #104 of 320

Now we need a high end STAX amplifier too!

post #105 of 320
Also, now that optimum synergy is optained between the DAC & the AMP, the question becomes... Which Headphones offer the very best synergy with the HeadDac ?? :-).

We indeed now need a list of Headphones that do not break the "Synergy chain" :-)
Edited by bmichels - 7/21/14 at 5:45am
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