KR Audio PX4 (matched pair)

This is the KR Audio PX4.  Delivers 3-6w of pure, Class A power.  Sold in matched pairs.   This is a perfect replacement for any PX4 Tube.  KR Audio offers a six month warranty on all tubes from the date they arrive at wholesaler or the date they are installed in an OEM amplifier.   Maximum Plate Voltage 350 V Maximum Plate Current 60 mA Plate Dissipation 20 Watts Va 250 V Ia 48 mA Vg -32 V Transconductance 5.1 mA/V Amplification Factor 5.0 Filament Voltage 4 V (DC/AC) Filament Current 1.1 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.