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KR Audio 211 triode power amplifiers are high-end tubes. The KR-211 are low-frequency, high-power, high-gain, high-voltage triodes offering 20 to 26W of pure Class A power.
These tubes are sold in matched pairs to deliver the best possible performance.

Technical chracteristics
| Specifications | |
|---|---|
| Product type | Power tube |
| Tube type | Triode |
| AC/DC Voltage | 10V ±5% |
| AC/DC current | 1A |
| Amplification factor | 12 |
| Maximum values | |
| DC plate voltage | 1250V |
| DC plate current | 140mA |
| Plate dissipation | 100W |
| Power amplifier class A1 | ||||
|---|---|---|---|---|
| DC plate voltage | 650V | 750V | 1000V | 1250V |
| DC plate current | 90mA | 34mA | 53mA | 60mA |
| Grid Voltage | -15V | -46V | -61V | -80V |
| Transconductance | 4.0mA/V | 2.75mA/V | 3.15mA/V | 3.3mA/V |
| Plate resistance | 3.0kΩ | 4.4kΩ | 3.8kΩ | 3.6kΩ |
| General | |
|---|---|
| Package | Matched pair |