Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
Radford STA-25 MK IV Tube Valve Amplifier
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Radford STA-25 MK IV Tube Valve Amplifier

Regular price
$2,149.00
Sale price
$2,149.00
Regular price
$2,200.00
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Radford Tube Amplifier. Condition is Used. Shipped with Standard Shipping.


Arthur Radford gave permission to his former employee, John Widgery of Woodside Electronics, to oversee the run of 100 individual units of the Classic Radford STA25s. These amplifiers were designated Mk. IVs and painted gloss black with gold trim to distinguish them from the battleship gray early models.  

There were only 100 of these amplifiers built by Woodside.  But the North America importer of Radford Woodside brought into Canada enough spare parts to build two more amps.  This amp is one of the two...#102.  The importer in Canada at the time was Barry Flacon from Tercel Audio Marketing, well known for workmanship and time with vintage British tube gear.

We are including all the tubes but the 34s should be replaced – they are past their prime and showing signs of age.  You should be comfortable with valve gear and biasing before installing new tubes.  You can still use the 34s but we imagine you would want something in better condition. 

Lots of midrange here – much different than most tube amps we have listened to.  Mid and highs are very good.  There's not so much as bass defintiion yet tight enough to let you hear the pluckings well on an acoustic bass line.  Almost wish we had a spare pair of Tannoy speakers laying around – I’ll bet that would sound pretty good.

Pro packaged, insured and includes tracking.  No PO Boxes.  No accessories only what you see in the photos.