Jean Hiraga super classA 30W amplifier build part 2 

Great job looking very nice.. thank you 🙏🙏

Very nice project, I'm curious did you use the crc resistor as in the original hiraga? It's the 1 ohm between first and second supply capacitor. And how is the ripple when its biased correct?. I've made one to, you can see slide photos here on my profile.

I really enjoyed watching you build this clone of the Super Class A 30. My knowledge of electronics is rusty (the least I can say since I have never put it to use since I graduated 15 years ago) however my motivation is great to build one of my of one of these 😊. This said, I would enjoy seeing you completing the wiring of this bad boy. Part 2 only shows the assembly... By the way, would you be willing to share your design (schematic, PCB design, etc)? Your video has been very inspiring for lots of people (that is why I eventually landed on it). Anyway, if you could share some more, I would love to watch/read it. Last question (promise): did you try decent speakers and sources with it? On your video, you are using a low-end speaker (understandable, it is preferable to ruin this instead of one worth thousands of euros...). Thanks again for sharing your adventures with us, it really inspired me... Cheers!

looks great bro I would add a nice amp chassis to that 😊

Hi, Thank you for the great detail in the videos. I like the Hiraga amplifier, I am building an LM3886 based amplifier myself. I like your heatsinks, may I have the name of the supplier please? Thank you, K

Hi, lovely build. Is there a part 3? I would like to build one based on your test results. I have already built a Nelson Pass Aleph 3 from kit. Thank you for the informative videos.

Thanks for showing us the famous Jean Hiraga Class-A 30W / 50W amplifier, you need those heat-sinks & cooling fans just to keep it at 65 degrees? Your amplifier can cook breakfast. Jean Hiraga Class-A is famous for the ultra-low distortion, you can measure the THD later although if you built it perfectly then it should have the ultra-low distortion,... you look very passionate and now own one of the best sounding [or most transparent / invisible] amplifiers in the world. I recommend you connect it to one of the invisible sounding DAC's, with one of the modern invisible sounding OP-AMP's~ (not the ancient OPA627 & so on, which became famous due to unique sound "that's OPA627..", Jean Hiraga famous due to invisible nothing sound). (plus humans can hear [/identify] down to ~.0001% THD* & that's just the reality, humans are like walking lab equipment.. eyes can see millions of colors as well, that's evolution, evolution is cool) [*plus, since humans have built-in processing in optics & in audio, like we "see what we expect to see", to process faster & more efficiently, then the simple A/B/X boxes interfere with the pre-processing, the sound just blurs together in the brain, humans are not designed to A/B/X THD & time-domain, only amplitude (volume).. A/B/X in volume shows humans can identify.. I don't have the paper in front of me now.. something like the wings of a moth 50 metres away.. that's pretty good... evolution is cool].

good morning and congratulations for the realization ... I wonder why the choice of the wooden base Did I read somewhere that when the chassis is not used as a heatsink having a wooden base can even improve the sound? what wood did you use? I guess the wires from diode bridges to caps will be placed underneath the wooden board ? what i like of the wood is that it does not conduct and also could dampen some vibrations from the mains transformer. I would use even a rubber sheet under it ... like those rubber sheets used in the car under the feet. But they must be rubber not plastic. Another solution could be a small piece of those carpet to dampen the noise of people walking ... congratulations again and best regards, gino

Those caps look scary

I saw myself on u Sir! I just don't have the right equipment right now

Mr Natural!

could you please mention how many uf each capacitor is? and what about the transformer ??(...how many VA ?? the output level 50-0-50 v?? )thanks a lot in advance...Congratulations again for your excellent presentation and waiting for the third part

How much metal? how much does it all weigh? And the sound is still no better than a modern D-class amplifier. I was assembling a zen Pass amplifier. It turns out bulky, heavy, heats up, the case is large, and Class D, for example, TPA 3255 or Ice125asx2 power amplifier board sound even better than Class A and compact, do not heat up. Why assemble a coffin with music?

In my country that caps called "elephant caps"

what is the watt maximun of the speaker...???

Hi dear Can i use 4x 47000uf each amplifier power supply i want make they monoblok and i use 2x 600VA transformer ! Your youtube chanel is very very good ! Thanks

I am looking for big case with large heatsinks. Hiraga boards are finished.

I want ask: 1)What is using Elco cap&how uf? 2)did using transformer Ampere&how much transformer?

Tony. I'm wondering if those heatsinks/ fans will be big enough? Are the pcb"s available?

What about the preset. Kindly advise the setting voltages

So you want making music without distortion, which is a good point. Why don't you use a metal case. That is part of lowest distortion.

Hi is not more small the dissipate???what final mosfet you use?2sc5200??

Must admit I had expected you to give us some detail about the design but you did was exactly what the description said - a video of you assembling your amplifier.... Less than helpful to be frank.

more information about capacitors?? heatsinks supplier?? Thanks a lot

i think you need bigger elko's :)

The crappy music is a distraction - are you in a disco? Is there NO other information you could put in as text or a simple voice-over?

nhìn chả ra cái gì, cái này là class AB chứ ClassA mà số nguồn và tụ kia có thể đáp ứng được à.