The Sontronics Aria cardioid valve condenser microphone is a professional-grade audio recording tool featuring a hand-selected European 12AX7/ECC83 vacuum tube that delivers warm, vintage-inspired sound characteristics. This microphone incorporates a large 27.2 mm (1.07-inch) edge-terminated capsule housed within a chromed grille assembly, engineered to capture detailed vocal performances with exceptional accuracy. The cardioid polar pattern effectively minimizes background noise and room reflections while focusing on the primary sound source. The included SPS-2 power supply unit provides essential functionality with pad switches offering 0 dB and -10 dB attenuation options, along with a 75 Hz high-pass filter for reducing low-frequency rumble. A dedicated LED indicator signals when the vacuum tube has reached optimal operating temperature, typically requiring approximately 30 seconds warm-up time. Constructed with premium components in United Kingdom manufacturing facilities, this microphone demonstrates improved signal-to-noise performance and reduced self-noise levels compared to earlier tube microphone designs. The frequency response characteristics include a gentle high-frequency roll-off that contributes to its smooth, balanced tonal quality. Weighing approximately 850 g for the microphone body with additional weight for the power supply unit, the Aria is suitable for studio recording applications including vocal capture for both singing and spoken word, acoustic instrument recording such as piano and guitar, plus broadcast and voiceover work. The microphone's performance characteristics have been evaluated by professional audio engineers and recording artists in various studio environments. This successor model to previous valve microphone designs maintains the brand's commitment to audio quality while incorporating technical refinements for enhanced reliability and consistent performance across extended recording sessions.