Audion Tube Amplifiers, Pre-Ampliers and Electronics



Audion Silver Night Anniversary PX25 hard wired stereo is our intermediate power amplifier, using the lesser well known PX25 tubes These amplifiers are hand built and point to point hard wired (Air Wired©)  avoiding the use of Chinese components where possible. This triode based integrated stereo power amp uses no (zero) feedback in the design. The chassis is black powder coated aluminum as is the transformer cover. The top plate and badge are mirror finished stainless steel.

The Silver Night range of amplifiers are the best known of the Audion products, and the ones that have won most awards, notably amp of the year in Japan 2010. The SN 300B hard wired was the amp originally reviewed by Sam Tellig that put Audion's name onto the map.

Amplifier matching

This Silver Night Anniversary  is best suited for use with loudspeakers of 89db or better efficiency. Ideally matched with our range of Proton or Electron  cables. The amp delivers 8 watts into 8 ohms from a PX25 . Upgrade options are available for this model, see upgrade options at end. Integrated option (5 Stereo inputs are available on all stereo models)

Quality both inside and out

Having a volume control on the front and stereo inputs on the rear means that a pre-amplifier is not necessary with this unit, but is advised . These amps are all auto biased. The PX25.comes with KR PX25.

The Silver Night Stereo range can reproduce subtleties and nuances in music that can not be found in other amps of this price. The PX25 delivers slightly more power and presence as well as deeper bass and higher tops, the mid-range is incredibly sweet and controlled. The PX25 is wired for 8 ohms,
however they have a 4 ohm tapping that can be changed internally.

The Silver Night Anniversary is built with components sourced from Europe and the US. Where possible we avoid the use of any Chinese component. Our output transformers are wound in-house to our exacting standards and many of the components are either made by us or specifically for us. We use KR PX25 and Russian New old stock 6H1N as a driver and input tubes.  

As the brand name is so well known this is the most popular selling amp in our line-up and the one that wins hearts and minds.

The current Silver Night Anniversary is now 5th Generation product, originally being sold in 1987.


Power 2 x 8 Watts Class A  into 8 Ohms at 240V AC


4 - 8 Ohm Nominal
Distortion @ 1Watt:               <0.1% No Feedback

Frequency Response:         

15hz – 33 KHz ±3 db

Sensitivity:             Variable >150mV Full output


< (CCIR) – 90 db
Consumption:         157 Watts


2 x PX25, 2 x 6922/E88CC/6H1N

Size - 42cm deep, 23cm tall and 19cm tall - Less tubes


Fuses - Power 2A / 240V   HT 500mA / 240V

Warranty -

2 years - tubes 6 months


Read more about possible upgrades and options for this amp:

Upgrades and options


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