Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. The frequency response differs (20 Hz-20,000 Hz vs 20 Hz - 20000 kHz), which can influence how well the headphones reproduce lows, mids, and highs. The driver size differs between the two (NA vs 50 mm), which can influence sound depth, bass response, and overall audio clarity. Impedance levels vary (32 Ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. Sennheiser HD-451 and JBL Quantum 300 offer different noise cancellation capabilities (Yes vs NA), which can impact how effectively they block external noise. There is a noticeable difference in weight (380 g vs 245 gm), which may affect comfort during extended use. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. If you're comparing Sennheiser HD-451 and JBL Quantum 300, both models offer a strong combination of sound performance, comfort, and modern wireless features.

Verdict: Choosing between Sennheiser HD-451 and JBL Quantum 300 depends on whether you value better sound, longer battery life, or enhanced features.