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Differences between various Quantum devices

I realise there has been some discussion of Quantum QX4 and QX2 devices. I have seen them at several shows and am sold, personally, on the gains envolved. They are not cheap, but I am all ready to pay for a QX4 and I find new alternatives. Firstly QRT themselves are producing a QV2, a small plug in device for sockets and conditions. This evidently is not the same as QX4 and 2, it uses different technology. Kemp as well have the much cheaper plug in QA plug. So what do I do know?

A big ask I am sure, but has anyone compared the differences and merits of QX4 or 2, with the QV2 and Kemp plug. I would prefer the latter if it works as well, partly for the cost, but also it means I don't have to find room for another shelf in my rack. Thanks David
david12

Showing 5 responses by david12

david12 OP
1,454 posts
 
Thats helpful Chuck. In as far as I understand what Quantum is about, I thought it was'nt to do with cleaning the mains. If it is I have a good power regenerator the Pure Power APS 1050 to do that and I would'nt need a QX4. Therefore I am not sure that the Enacom AC filters would be a help. I hope the QV2 does something of what the QX4 does. I see the thread you referred to, someone is about to add a QV2 to a QX4, I hope he will report back.
david12 OP
1,454 posts
 
That's good to know John. I rate Pure Power very highly, so it's nice to know you found a clear improvement with the QX4.
Do you pass the mains through the QX4 to the APS 2000. I know that is the way you are supposed to do it, but I spoke to a Nordost rep at the UK national show last year. He suggested passing a cord from your conditioner to the QX4, then into a low draw piece of electronics, such as a pre amp or CD player. This avoids any risk of exceeding the current available through the QX4. If you place that unit in the middle of the rack, it will still boost the other components of your system. It might be worth trying.
david12 OP
1,454 posts
 
I second that, it isolates you from the mains via a battery, creating a clean mains source. I have'nt tried many power conditioners, only the Kemp power source before. I am really impressed at what the 1050 has done for my system, I've been using it for 3 years now.

The company will advise on the capacity you need from their regenerator. I have the 1050, John the 2000. I have seen it said that whatever power you may need the 2000 is a better unit, with better results, but I can't confirm that. For the price, I think it is a very good deal.
david12 OP
1,454 posts
 
Getting back to the differences between devices, Doug reported differences are minimal, that is helpful, but has anyone done an A/B comparison between them. The answer is probably not, but I'd like to hear if anyone has.
david12 OP
1,454 posts
 
Well I found a QX4 second hand. They don't appear too often, which says something about whether they work. Well it certainly seems to, with greater clarity and a bigger soundstage.
I still don't think they are worth the full retail cost.
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