Hi Marc,
I followed attentively the two first treads of Lazy Cat for a lot of time, and now I found this one.
The very simple amp I see seducts me, and so for your personal approche of it too. I already saw your works in an another french forum (GC, Zenquito, ...) some time before, which are impressives, chapeau bas
.If you agree, I would like you share your last Eagle stuff with 2SK1058/SJ162 (TO247).
Thank you in advance.
Michel
Hi Marc,
I followed attentively the two first treads of Lazy Cat for a lot of time, and now I found this one.
The very simple amp I see seducts me, and so for your personal approche of it too. I already saw your works in an another french forum (GC, Zenquito, ...) some time before, which are impressives, chapeau bas
If you agree, I would like you share your last Eagle stuff with 2SK1058/SJ162 (TO247).
Thank you in advance.
Michel
No soucy as you have in mind i not testet it, so you must do this verifying job. Give me the post number you interest for and a email adresse through MP.
Marc
Hi all 
As promised here are some pics of the first lab listening test of both VSSA channels. Measurements will follow over the weekend.
VSSA is a very, very good sounding amplifier, of course a lot of dependency factors included but if someone don't mess around too much, can definitely taste VSSA sound at its best.
Regards Andrej
As promised here are some pics of the first lab listening test of both VSSA channels. Measurements will follow over the weekend.
VSSA is a very, very good sounding amplifier, of course a lot of dependency factors included but if someone don't mess around too much, can definitely taste VSSA sound at its best.
Regards Andrej
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VSSA once set (trimmers measured and replaced with resistors) holds on to +/- 1mV (true), needs no DC servo at all.
You should hear it man hehe
Samwhas were so cheap (1 €/pcs) that I couldn't resist them. Will place them away from sink as you recommend. For comparison purposes I'll assemble two PSUs with Nichicons and see how much better they're.
VSSA PCB in production. I'll assemble and test first two as working amplifier and if everything works out fine, group buy can be organized in a new thread.
Now SMD parts will be ordered and before first PCBs arrives I'll prepare assembly documentation.
As you said, the sound is really good. Are we going to expect a group buy soon to hear the sound of the VSSA Amplifier? I'm just excited to try.
:VSSA once set (trimmers measured and replaced with resistors) holds on to +/- 1mV (true), needs no DC servo at all.
I just paralleled a 200k resistor with the negative 10k current injector. Now offset is -1mV. Steady, unaffected by heat. This is a major win for the SSA line.
As you said, the sound is really good. Are we going to expect a group buy soon to hear the sound of the VSSA Amplifier? I'm just excited to try.
Yep Lazy, Yet no more choice you have practice to much teasing about it...
Marc
As you said, the sound is really good. Are we going to expect a group buy soon to hear the sound of the VSSA Amplifier? I'm just excited to try.
That's possible of course, lets say PCB and semiconductors in the package. For that purpose I would have to prepare some sort of installation instructions documentation. 
First solder cca. 15 mm pins onto SMD pads than trimmers to pins, when trimmed to correct output DC offset/VAS bias, cut and unsolder the pins. Measure the value and calculate which two values of standard resistors in parallel are close as possible to the correct value. In my case 1,2 k and 39 k in parallel gives 1,641 k and that delta is only 10 ohms away from desired 1,631 measured value.
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In my case 1,2 k and 39 k in parallel gives 1,641 k and that delta is only 10 ohms away from desired 1,631 measured value.
Typo: 1,1641 k and 1,1631 are correct calculations. 