By KR Audio

KR Audio 211 (matched pair)

Regular price $1,150.00
Regular price Sale price $1,150.00
Shipping calculated at checkout.
Regular price $1,150.00
Regular price Sale price $1,150.00

There are 845s and 211s in stock in the US with potentially shorter delivery times.  Please send an e-mail for us to check stock and confirm delivery times.  

This is the KR Audio 211.  Delivers 20-26w of pure, Class A power.  Sold in matched pairs.   This is a perfect replacement for any 211 tube in an Art Audio amplifier and can be purchased as an upgrade for your Integra 211. 

In other amps, please contact the manufacturer to determine compatibility.  The standard 211 has a 3.5 A Filament Current while the KR has a 1.0 A Filament current.  Many amps require modification to use this 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 1250 V
Maximum Plate Current 140 mA
Plate Dissipation 100 Watts
Va 650 V
Ia 90 mA
Vg -15 V
Transconductance 4.0 mA/V
Amplification Factor 12
Filament Voltage 10 V (DC/AC)
Filament Current 1.0 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.