The Audio Note Cobra Integrated Amplifier is a high-fidelity tube amplifier that combines classic valve technology with modern digital inputs, delivering a rich and immersive listening experience. Below are its key specifications and features. Power Output: 28 watts per channel (Class A push-pull). 4 × EL34 (power output). 2 × 6AU6 (double triodes). 2 × 5670 (driver pentodes). Coaxial S/PDIF: Up to 24-bit/176.4kHz (native 16-bit DAC). Optical S/PDIF: Up to 24-bit/96kHz. Analogue Inputs: 3 × RCA (silver-plated). Frequency Response: 20 Hz to 20 kHz. Channel Balance: ±0.3 dB.