KR Audio PX25 (matched pair)

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  • Regular price $1,050.00
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 his is the KR Audio PX25.  Delivers 5-10w of pure, Class A power.  Sold in matched pairs.  KR Audio offers a six month warranty on all tubes from the date they arrive at wholesaler.  

This tube is available in two pin configurations - a Base Pin configuration and an English pin configuration.  The UX4 configuration is the appropriate replacement tube for all Art Audio Amplifiers.  It has four evenly spaced pins with two that are larger than the other two.  The English Pin configuration has one pin spaced further from the other. 


If you are not sure which pin configuration you need, please contact us so we can help you pick the right tube.

Maximum Plate Voltage 500 V
Maximum Plate Current 90 mA
Plate Dissipation 30 Watts
Va 400 V
Ia 63 mA
Vg -31 V
Transconductance 7.4 mA/V
Amplification Factor 9.5
Filament Voltage 4 V (DC/AC)
Filament Current 1.8 A


Delivery will typically take 2-4 weeks as these are special order.  Delivery time is longer during August when KR is closed for Holiday.