I can tell you one secret of the Zion. Because of it´s topology it has amasing power supply rejection. It may need some selecting and trimming. So far i selected only for Hfe and i use 1% metal film resistors so nothing fancy. The first proto worked withing simulated tolerance.
The other " secret " is thermal stability. There are provisoons in the circuit for this that we be explained later. And yes, we do not use a servo. There is one cap in the circuit that does a mild subsonic filter.
The other " secret " is thermal stability. There are provisoons in the circuit for this that we be explained later. And yes, we do not use a servo. There is one cap in the circuit that does a mild subsonic filter.
The input stage is working just fine. No bugs, right away.
I am finishing the output stage too tonight.
In this case it is a That 1512 INA. We can later compare this to Frans Hyper Balanced topology.
I am finishing the output stage too tonight.
In this case it is a That 1512 INA. We can later compare this to Frans Hyper Balanced topology.
The latest version is working. I got 1.2V and 3V on one channel and 0V and 2V on the other channel before the 1uF caps without trimming. No bugs, worked right away.
Thermal drift is low.
It is a very quiet stage. I like the sound. It is dynamic and natural as far as i can tell.
Thermal drift is low.
It is a very quiet stage. I like the sound. It is dynamic and natural as far as i can tell.
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This will be awesome. The prototype sings. Sometimes i think : does it make any sense to make just another phonostage ? There are so many and good ones.
This had to be done. It really jumped out of our heads bold. " Make me ! ".
OHH, again my german humor. Does not always work. We need a reason to live though.
This had to be done. It really jumped out of our heads bold. " Make me ! ".
OHH, again my german humor. Does not always work. We need a reason to live though.
Indeed, no point going through life thinking - if only I had tried this.
My greatest admiration and respect for your efforts, to all at team Paradise/Zion and ?. 😉
Louis, the Paradise was a couple of years in the making this one is running decidedly quicker. They do all have day jobs...
Currently I'm evaluating the PSU sections (and it looks great 🙂), I need a bit more time for that, but I'm not able to any of the work before mid next week. We are working on it, but do not hold your breath 🙂
Next weekend I'm in Germany and (one of the things I will be doing) for the first time I will be listening to Joachim's prototype build.
Sure but certainly they appreciate that the tread is kept alive and that we show same interest
I rather see this taking 3 years but whit a supply where transistors do no sit under a heat sink just to mention one.
I am certainly looking forward to ear from FDW about his listening impressions