Kora's integrated amplifiers bring the full force of their patented SquareTube technology into single-chassis designs that combine preamplification and power amplification without compromise. Designed and built in Toulouse, France, by engineers with aerospace backgrounds in power supply and signal treatment, each integrated uses four triodes per channel in a symmetrical configuration. This is not hybrid amplification in the conventional sense. The SquareTube circuit functions as a true tube amplifier, with transistors assisting the output stage rather than replacing it.
The lineup scales from the TB 140 at 70 watts per channel through the TB 200 at 100 watts, up to the TB 400 delivering 200 watts of Class AB power. Each step up brings more filtering, larger transformers, and greater current delivery while maintaining the same musical character. Pair any of these with Kora's preamplifiers or expansion modules to build a complete system.
