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A well designed amp with PuriFi modules is sweet in the sense of having extremely low distortion and being load-invariant, meaning that it won't exhibit frequency irregularities when driving reactive loads. Since I find distortion and FR bumps to be as un-sweet as anything, I would call my amps sweet, though it's not a term I habitually use for audio gear. As an illustration, I can (and do) listen to decent commercial recordings of harpsichords, sopranos, and violins with pleasure. The amps are not sweet in the sense of having audible high-frequency rolloff or added warmth.Some comparisons to other amps I've heard for weeks, months, or years: I consider the Apollon amps similar in tonality to the Bryston 4B3, Classe CA-2300, and AVA FetValve 400R. On the other hand, the Apollons are perhaps a little cooler than the Pass X250.8. (One person would say "less colored," another "less beautiful," but compared to a tube amp, the differences are small.) Despite its wide acclaim, the Sanders Magtech sounded cooler than neutral to me; the Apollon amps do not sound like that at all.What I've noticed with the Apollons (and another "D" I tried) was remarkable clarity, which I like.Good luck!
Ok thanks! But I heard Klaus was difficult to deal with!
Thanks for sharing! Are you saying Apollon is closer to a tube amp without the high frequency roll off?I went to Apollon website but since I am in North America do you think Nad c298 will sound like your Apollon?You also mentioned Apollon don't sound cool like Magtech. So they sound more like the new Bryston 4b3? BTW the 4b3 on Magneplaner 1.7i sounded great. Smooth full and airy!
Why is OTL better? I thought transformers vat output like tube amps and McIntosh amps make ESL sound better?
Hi everyone!Yes I have the Martin Logan Electromotion ESL!
I meant that differences among the SS amps I listed were small compared to the difference a tube amp might make. That was not a value judgement (good or bad), just that tube amps, because of their typically higher output impedance, can vary a lot from speaker to speaker. Perhaps I should not have mentioned tubes at all, as I've not owned a power amp with tube output stage for decades.Sorry, I don't know what the NAD sounds like. I would not assume that all amps with PuriFi modules sound the same, because there are other parts to the amplifier than the modules, and even aspects like parts layout can make a difference. Yes, I was trying to say that the Apollons had tonality similar to the Bryston 4B3 (as far as sweetness or warmth), but with some additional clarity. The 4B3 is what I owned before buying the Apollons, so I have several years' worth of experience with it paired with the Janszens.All the above, of course, is with my ears in my system. Others might not agree with my tastes.It seems like your next step would be to make a short list and try to audition some of the contenders, in your own system if possible.
Henry Ho's S250 Signatures. Check out the reviews ,his amps were designed to deal with electrostatic speakers in mind. Class D with massive traditional power supplies.
easy speaker to drive, no need to sweat over too much. 50-100 watt 8 ohm rating and the ability to dbl down(SS topology) will be plenty
Well there is no better really when you have a budget. You can choose what priorities matter most to you and go from there. It really would help to know what speakers you have. Some amps work better based on what they see from the speaker load.Also AUTOFORMERS can be your friend and are worth trying in your system.Transformers are a big source of distortion. If you value low volume fidelity then OTLs are one of the best, along with DHT's. OTLs usually have simpler circuits and higher bandwidth. Simpler is usually better.If I were going to simplify the description; they have a purity that is complimentary to stats.you can read more about their advantages (and disadvantages) at the company sites I mentioned.
The only SS amp I tried was a Sanders Magtech, left over from my days using Maggie 1.7s. Lots of power, but totally lifeless sound with the JansZens.
The different types of commercial and DIY ESL's present different loads to an amplifier. The most difficult ESL's to drive are large unsegmented panels like Martin Logan SL3's, many DIY types, and Quad ESL 57's; all of which present a totally capacitive load with huge phase and impedance swings. Slightly less difficult are unsegmented hybrid types like most Martin Logan and Janzen models. The easiest ESL's to drive are the Quad ESL-63 types which use segmented stators connected as an LC transmission line. These are a predominantly resistive load.The segmented line source types connected as an RC transmission line (the current state of the art in DIY types) present a load that's only partially capacitive and mostly resistive. Class D amps drive capacitive loads quite well but some consider their sound a bit sterile and lifeless. I think a load invariant amplifier like a Sunfire or Sanders Magtech would be excellent choices for driving the more capacitive ESL's. I personally use class G amps (basically class A/B solid state amps with 3 power rails) and I never had any problems driving my older unsegmented hybrid ESL's or my newer RC segmented hybrid ESL's
The different types of commercial and DIY ESL's present different loads to an amplifier. [...snip...]Class D amps drive capacitive loads quite well but some consider their sound a bit sterile and lifeless. I think a load invariant amplifier like a Sunfire or Sanders Magtech would be excellent choices for driving the more capacitive ESL's. [...snip...]
Jazzman53,Thanks for the education. Where do current generation Sound Labs fit into that picture?
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