How NVA amps have been upgraded since 2020

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savvypaul
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How NVA amps have been upgraded since 2020

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The intention here is to provide information about the most significant upgrades (or other changes) we have made to NVA amps since 2020.

This is not a subjective commentary. User feedback is available on the NVA reviews thread and on the NVA website. (I will add links, later).

2020

P50 stepped attenuator model upgrade - Seiden switch, Audio Note load resistors, silver plated input wiring. The new attenuator is smooth and virtually silent in operation.

2020

Toroidy audio grade transformers now fitted to all NVA power amplifiers, integrated amplifiers, phono stages and headphone amplifiers. The new transformers are physically larger and heavier, like for like, compared to those used previously, and are built to much tighter tolerances. For example, the new 150va transformer is larger and heavier than the previous 160va transformer. In conjunction with above, heavy duty Vishay power supply capacitors now fitted, chosen for ESR performance and long life rating. Also, upgraded internal wiring.

2020

Standard version of P50 and AP10P/H now fitted with ALPS pot due to quality control issues increasingly experienced with previous volume pot.

2021

New amplifier boards fitted. Made in the UK using the latest selective soldering processes. Upgraded Wima capacitors and Vishay resistors.

2022

Toroidy balanced transformer now fitted to BMU. Soft start and thermal cut out fitted as standard.

I will add more precise implementation dates to the above, when time allows. We have also begun the process of compiling a numbered database for each item that we build and sell, and we are giving some thought as to how that might be applied retrospectively to all items from 2020 onwards.
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Status: Manufacturer
Company Name: NVA Hi-Fi
https://nvahifi.co.uk/

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