Perfect tube for Sonic Frontiers SFS-40. Excellent service. Thanx
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The Mullard KT88 is a top-quality tetrode tube. It's an exact copy of the tube made by Marconi-Osram for Marshall in the late '60s and '70s. This tube will give you a powerful, balanced and detailed sound with full bass. The KT88 power tube can be used as a replacement for any 6550 tube, or can be integrated into the iconic Marshall Major to reproduce its original sound.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Tube | 
| Dimensions | 125mm x Ø52mm | 
| Quantity | Unit | 
| Heater | |
|---|---|
| Vh | 6.3V | 
| Ih | 1.6A | 
| MAX Ratings | |
|---|---|
| Va | 800V | 
| Vg2 | 600V | 
| Va.g2 | 600V | 
| -Vg1 | 200V | 
| Pa | 35W | 
| Pg2 | 6W | 
| Pa + g2 | 40W | 
| lk | 230mA | 
| Vh-k | 200V | 
| Tbulb | 250V | 
| Rg1-k (cathode bias) | ≤35W : 470Ω >35W : 270Ω  | 
| Rg1-k (fixed bias) | ≤35W : 220Ω >35W : 100Ω  | 
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