tubes and analog

Hmmm, Audiofeil, why don't you ask him to explain it rather than using words like crap, BS, ridiculous, etc. You're posts have been nothing but antagonistic for so long it has become tiresome.

You keep attacking Raul like he's trying to sell his preamp, but I don't see you attacking Ralph when he speaks of the virtues of his products. Is this because you sell Atma's??? Why the hypocrisy???

I love it when manufacturers like Ralph and JCarr and Raul/Jose and Hagerman discuss their designs and thoughts here. There is valuable info to be gained from all of them and I hope they all continue to post so that we can benefit from what they have to say.

Unfortunately, Audiofeil, just like Raul has probably turned off many people with his posts, you have made it clear to at least me, that even in your native language you have a lot to learn about earning the respect of others.

Audiofeil - a "shill" eh? Come on, gimme a break. Who has something to sell here and works in the industry, not me. Perhaps you should look up the definition before you use words you don't understand.

I think Doug's post above may be leading us in the right direction to explain the original posters questions. I looked up the specs on the Primaluna and found that it's input impedance is 100K Ohms which seems unlikely to be the issue, but it's input sensitivity is 270mV. Couldn't find any specs on the AES unit, but wouldn't the Primaluna be easily overdriven with a .27V input sens.?

Well, the amp didn't exactly "blow up", but because of the wrong fuses it did take out a speaker(woofer) and I doubt Spencer wanted to continue using it until he tracked down the problem. I thought Spencer's explanation revealed clearly why Raul thought what he did and is understandable. The good thing is that this is not representative of Atma's - because someone had installed the wrong fuses - and explains why Ralph and others didn't believe it. I'm assuming nobody except Spencer knew the real story and from all outward appearances it looked like the Atma's had done something terribly wrong. Thankfully, a properly fused Atma should never exhibit this behavior and I think any rational person would admit that installing the wrong fuses in an amp is likely going to lead to problems that are not inherent to the design and could lead one to think there is something wrong with the amp. So shouldn't this be chalked up as a misunderstanding? It seems to me that Ralphs amps were not at fault and Raul witnessed something that appeared like it was. I imagine they both now understand what happened.