As you go up the NVA range the differences in performance are driven by upgrades to the power supply. The basic circuit remains the same. Fitting better transformers and capacitors will provide a cleaner, faster and quieter power supply. Richard and Tomasz had discussed this at length for the Black Box range and Richard had wanted to implement this improvement, when funds allowed.
Users will get a better NVA amplifier, both in our opinion and in Richard's, and the upgrades are entirely consistent with the NVA design philosophy. For example, here are the 4 main differences between the Statement and Black Box ranges:
1. Upgraded and larger transformers
2. Larger, better quality capacitors
3. Additional smoothing capacitors
But some transformers are now 150va instead of 160va?
The slight difference in rating is vastly outweighed by the transformer quality.
Why are you doing it now?
Firstly, because we believe the Toroidy transformers offer a significantly improved specification and performance at a price point that was not previously possible. Secondly, we have the funds to stock a sufficient number of the upgraded transformers. Thirdly, NVA prices had to rise to account for the costs of making NVA into a 'proper' business, again. Knowing this had to happen, we wanted to ease the transition, a little.
When can we hear the new versions?
The first batch of A20s, A60s, A70s & A80s will be available at the beginning of November.
Can the upgraded transformers and capacitors be fitted to my existing NVA amplifier?
In some cases, yes. But it is a fairly lengthy procedure as the old parts have to be carefully chiselled away from the case. Tomasz will double check viability for each model and work out costs.
In some cases, no. For example, the MKII A80 cases do not have enough space for the new transformers that will be fitted in the MKIII version.
I will pass that info on to Tomasz.
I think Richard was always very cost conscious with components using best available at his set price points. But Tom has now taken over the NVA mantle and deserves every support for his ( and Richard's ) development ideas.
Would it be possible to replace the transformers in Statement PSU's and BBPSU ? (don't know what size they are but pretty big). I have six of the buggers and even with a mains regenerator and BMU my system still sounds like a small sub-station!
A bit off topic but try a DC blocker. It transformed my set up. Almost as big an improvement as the BMU.
ATL are really good to deal with and I put in one of theirs. Best to be done before Brexit.
A better built transformer may affect the sound in some way but it will not be because of the VA rating
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