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NVA P20

NVA P20 – PASSIVE PREAMPLIFIER

This is NVA's entry-level unit for those starting off with their first separate pre/power amp combination. Whilst it is a cost-effective way of entering the world of multi-box amplification, it is still built with the finest quality components you would expect from NVA.

Being of passive design, it is utterly transparent and has no sound of its own, simply being a conduit for the music from record/CD or other musical source. It really is an open window onto the signal it is fed.

NVA P20 Specifications:

Controls - Volume and source select

Inputs - Two line level and direct

Outputs - One pairs of 'pre-outs' for single amp support - plus tape output

Dimensions - w160mm x h50mm x d130mm

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"Following a fault developing in one of mono amps, I borrowed an A20 and P20 passive pre amp and stereo power amp combination whilst my amps were away for repair. This is the first time I have seen NVA acrylic in the flesh and they are a lot more attractive than the pictures suggest... the passive pre amp is a gorgeous little box."

"I was not expecting too much - the power amp is theoretically not as powerful as my mono amps. First up was Fleetwood Mac "Big Love" which I play for the drum crescendo intro. And secondly I played Prefab Sprout "Cars and Girls" again because it has a dynamic crescendo start and because it is a multi-layered record with the various instruments distinctly placed in the mix. It also has some awesome interplay between the drums, cymbals and guitars and is foot tappingly good on a good system and after a poor day at work it good to be reminded "some things hurt more much more than cars and girls". In my smallish room I was very impressed with the sound. It was dynamic, punchy, airy and musical. There was no deficiency in volume: 70% of the volume control was sufficient to give realistic spl level in my room - for me anyway."

"As a rule I do not compare products with my memory of another product, but I can say I was very surprised and pleased and on these two records this combination seemed to give nothing away to my mono amps."

P20 Rear

Both inputs are identical and hardwired to the selector switch using silver alloy cable with PTFE cover. The output of the switch is routed to the volume control again with the silver alloy cable. The volume control is a very high quality plastic film potentiometer. The signal is routed by using silver alloy cable. There is one set of output sockets for a power amplifier.

For turntable use you must use an NVA Phono1 or Phono2 external phono stage or equivalent. Not all Power Amplifiers are suitable for use with a Passive Pre-Amp and the manufacture should be contacted to assess suitability.

Warranty is for two years parts and labour and after that a further three years it will be repaired on a no profit / cost basis.

Return Policy
Return Policy Text

WHY GO PASSIVE?

With the increasing use of CD as primary source, the need for traditional pre-amplification recedes. Line-level sources such as CD, tuner and tape normally have sufficient output to drive power amplifiers. All you then need worry about is the number of inputs provided since a passive preamp is simply a potentiometer placed between the source component and the power amplification.

Proponents of passive preamps point to their simplicity; those who argue for traditional active preamplifiers point to potential difficulties interfacing passive preamps with certain kinds of interconnect cables and power amps which may present the wrong electrical characteristics. There is truth in both arguments. NVA claims to have been one of the first manufacturers to market a passive preamp way back in 1983. Interestingly, the development was not driven by the widespread usage of CD, as the date might imply: according to NVA's owner and designer, Richard Dunn, `It has always been our view that circuitry should be kept as simple as possible. We developed a passive simply because it offers better sonic performance.'

When NVA switched to a passive preamp (with phono stage, of course), the company also changed the input stages of their amps to offer the correct load to the potentiometer. NVA's P90 is built into a Perspex box, epoxy glued together - NVA is part of the school that believes magnetic boxes are a bad thing - that most people either love for its solidity, or hate for its Spartan simplicity. And, by gluing rather than screwing, even the tiniest eddy currents are eliminated.

Inside, there's no circuit board, just a potentiometer, a high quality switch and some expensive silver alloy wire.

The other main design aim was to provide good earth paths. Ground plane earthing is used, which the manufacturer believes is superior to the more fashionable star-earthing used in many better known amplifiers.

Important Information - Read Before Ordering

Please note all NVA products are built to order so therefore there will be a delivery delay as the production and testing is scheduled. Average delivery time is five to seven days but can on occasion go to 10-14 days depending upon order pressure.

NVA offer a 100% trade in value on our products. If you trade up within the NVA range of products within two years of your purchase date (only applicable to direct sales from us or through eBay). After that date we will still trade in your item but on a sliding scale as to age and condition of the item. You must print out and keep your eBay receipt or invoice to verify your purchase date.

This service and offer is quite unique in the world of audio and hifi.