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Upgrade your NVA P90 passive preamplifier

Upgrade your NVA P90 passive preamplifier to MKII P90SA specification:

  • Superb new stepped attenuators - quiet between steps (no cracking or fluffing), exceptionally smooth operation (no clunky clicks between steps) plus upgraded load resistors.
  • Upgraded silver plated internal wiring.

Ship your item to us (we strongly recommend using an insured courier service). We’ll send you full instructions once we’ve received your payment.

Upgrades are non-returnable / non-refundable. We will return your original attenuator(s) to you with your upgraded item (or dispose of, at your request).