Kora TB140

The review’s overall enthusiasm suggests a clean and satisfying presentation, and Kora’s Square Tube circuit is described as preserving the input signal through the amplification stage. However, the reviewer gives little direct detail about low-level retrieval, noise floor, treble air, or ultimate transparency.

Alpha Audio’s statement that it loved every minute with the amplifier points to a notably engaging, long-listenable musical character. The excellent match with Revel speakers further suggests that the TB140 combines its tube-based voltage stage with transistor grip in a pleasing, coherent way.

This is the most clearly supported sonic strength. Alpha Audio reports that the 70W-per-channel TB140 drove relatively demanding 86dB Revel speakers without difficulty and calls that pairing outstanding; its measured output also closely met or exceeded the published figures.

The supplied review does not specifically discuss stage width, depth, image focus, or layering. Its very positive overall listening verdict indicates an enjoyable presentation, but there is not enough direct commentary to make stronger claims about imaging.

The TB140 combines an aluminium and steel enclosure with a substantial 300VA transformer and 88,000µF of main filtering. Alpha Audio particularly liked the mineral-grey housing, acrylic front panel, and legible OLED display, while noting the tube section is designed for long service life.

The TB140 provides four line inputs, an MM phono input, and a pre-out for adding a more powerful external amplifier. It also includes a remote and useful menu options for per-input gain, balance, display dimming, and amplifier bypass, though balanced and digital inputs are absent.

At €7,000, the TB140 is positioned as a premium integrated amplifier with an unusual hybrid-style Square Tube implementation, MM phono stage, and pre-out. Alpha Audio praises the product’s innovation, but does not directly compare its price with competing amplifiers or make a clear value judgment.