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Thread: Soulution 701 monoblocks and 711 stereo amplifier

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    Soulution 701 monoblocks and 711 stereo amplifier


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    Addicted to Best! dallasjustice's Avatar
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    An SMPS on a $55,000 stereo amp?

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    Yes, after trying to convince us that negative feedback is good, they now want to convince us now that SMPS are better than linear supplies...



    alexandre

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    Quote Originally Posted by dallasjustice View Post
    An SMPS on a $55,000 stereo amp?
    What do you expect for a $50K amp?

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    Addicted to Best! dallasjustice's Avatar
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    Seriously, I wonder whether pricing goes down on the 701 and 711.

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    Quote Originally Posted by dallasjustice View Post
    An SMPS on a $55,000 stereo amp?
    If you're paying five digits on an amp and don't get an SMPSU then the PSU is probably under-engineered (valve amps excepted).

    <edit> From reading that release a bit more thoroughly its looking like they might be using an off-the-shelf SMPSU design, which would explain why they're paralleling four 600VA units rather than have a single 2400VA design. Not optimal at that price point and most certainly not a 'state of the art' PSU.

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    Addicted to Best! dallasjustice's Avatar
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    How many amps above $10k use smps? I can't think of many. I guess there's alot of poorly engineered amps, IYO?
    Quote Originally Posted by opus111 View Post
    If you're paying five digits on an amp and don't get an SMPSU then the PSU is probably under-engineered (valve amps excepted).

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    Yes, correct deduction. I see a lot of poorly engineered PSUs in high end amps. I take it that high end companies simply don't have SMPSU designers on staff and don't see the need for them either.

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    Addicted to Best! dallasjustice's Avatar
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    The only high end amp I've heard in my room with SMPS is the Rowland 625. It wasn't very good. I've also heard from reliable sources that the Soulution 5 series amps aren't that great.

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    I've also been unimpressed by some implementations of amps with SMPSUs. The first I heard, going back almost two decades now, was Chord. I think they may have been the first to use a switcher in a hi-fi amp. It sounded really gritty at the top end. The distortion measured pretty badly too but when we approached the designer with this information he pretty much said it was that way by design. My own amp sounds just fine with an off-the-shelf SMPSU but draconian filtering is needed to get it sounding this way. Perhaps Soulution haven't figured out the filtering yet but the fact they've got 1F of capacitance in conjunction with an SMPSU sounds like a promising start.

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