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This is a step up from NVA's entry-level unit and offers more options for input and output. 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 P50 Specifications:

Controls - Volume and source select

Inputs - Four line level and direct

Outputs - Three pairs of 'pre-outs' for single / bi / tri amp support - plus tape output

Dimensions - w250mm x h70mm x d210mm


"Over a period of several weeks I used the P50 preamp and Phono 2 head amp both within this system and with a variety of source and amplification components from other manufacturers. I think it's fair to report that overall `the amp done good!"


Click here for full review.


All 4 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 and tape socket 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 are three sets of output sockets in parallel to facilitate single / bi / tri-amping.

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


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.