When evaluating technical performance, focus on the Sensitivity and Selectivity of the tuner to ensure clear reception in various environments. Key specs include a Frequency Range of 87.5-108 MHz, a Signal-to-Noise Ratio (SNR) of ≥50dB, and the quality of the Auto-Scan IC (Integrated Circuit), which determines how quickly and accurately the device locks onto stations. Additionally, check the Speaker Impedance (usually 4 or 8 ohms) and Output Power (measured in Watts) to ensure audio clarity at higher volumes.