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The AP50 forms the third in the range of integrated amplifier.

All 6 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 potentiometer and tape socket again with the silver alloy cable. The potentiometer is a very high quality. The signal is then routed to the amplifier PCB again with silver alloy cable. The pre-amp stage is entirely passive. The input to the power amp stage has minimum capacitive and inductive coupling and has been designed to operate correctly with the variable impedance output of a passive pre-amp stage.

NVA AP50 Specifications:

Inputs - Six line level

Outputs - 4mm speaker sockets, Tape out.

Power Output - 50w per channel

Power Supply - 1 x 160va

Dimensions - w430mm x h90mm x d320mm


"The AP50 strips away nothing, and I implore you to audition it with rich vocals if you want to learn just what it can do. Arm yourself with some Nat King Cole, Keb' Mo', Johnny Rivers, or Howard Tate to hear the most detailed textures, and Nanci Griffith or Joan Baez to hear unbridled clarity without glassiness. And that's one hell of an accomplishment at the price."

Hi-Fi News & Record (1996)

Click here for full review.


A current mirror operates at the pre-driver stage to ensure that the voltage rails track each other correctly. The driver stage has both current and voltage amplification using devices that could be used as output transistors. The output devices are 12 amp darlingtons and there are two per channel. For turntable use you must use an external phono stage like the NVA Phono 1, Phono 2 or equivalent.

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.

Available in 120v or 240v please stipulate on purchase.

Return Policy
Return Policy Text


Only NVA LS1, LS2, LS3, LS5, LS6 and LS7 is recommended for use with this amplifier, other cables will invalidate the warranty.

For best sound the amplifier should be left powered up. Electricity consumption is very low. It is for this reason that the power switch is located on the back panel, where it may not be easy to reach. Turn the amplifier off when you do not intend to listen to it for extended periods.

NVA amplifiers are unique, and one thing that makes them so is the minimal compensation for the output stage. It is very possible to send this amplifier into oscillation by connecting too large a capacitive load on the output, the usual culprit being unsuitable speaker cable such as Litz or Goertz type constructions.

If you insist on using other cable (this will invalidate warranty) please ensure it is no more than 200pf per metre and it should not be used in lengths over 10 metres. If you wish to Bi-Wire this can only be done with NVA cable and they can be made that way on order for a small added cost.

For design performance only NVA Sound Pipe, Super Sound Pipe or Sound Cord Interconnects should be used, but this is for sonic as opposed to safety reasons.

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.