NOBSOUND P10-PRO Portable Tube Headphone Amplifier JAN6418 170mW 32Ω

The Nobsound P10-PRO is a hybrid tube portable headphone amplifier designed to deliver a warm and musical sound reproduction in a compact and portable format. Battery-powered, it combines two Raytheon JAN6418 with a hybrid tube + operational amplifier architecture, using a NE5532 op-amp by default, in order to combine analog musicality with modern stability. Compatible with a wide variety of headphones with an impedance ranging from 16Ω to 200Ω, it delivers an output power of 170mW at 32Ω with a 12dB gain, a frequency response from 20Hz to 20kHz, harmonic distortion below 0.1%, and a signal-to-noise ratio of 75dB.

The P10-PRO features a 3.5mm AUX input as well as a 3.5mm headphone output, allowing use with smartphones, laptops, USB DACs, or audiophile music players. It accepts a maximum input level of 1.0Vrms and can deliver up to 2.5Vrms output. Its design also allows replacement of the JAN6418 tubes and the operational amplifier, offering the possibility to customize the sound signature according to the user’s preferences.

Powered by two 14500 lithium-ion batteries rated at 3.7V / 600mAh each (1200mAh total), it provides 8 to 10 hours of battery life depending on the listening volume. Charging is performed via USB-C (DC 5V / ≥1A), with the possibility of listening while charging, while a full recharge requires approximately 2.5 to 3 hours when the device is turned off. The P10-PRO also integrates a 5-level battery indicator (0 / 25 / 50 / 75 / 100%) for precise battery monitoring.

Its refined design is based on WIMA capacitors and a CNC-machined aluminum chassis, ensuring robustness, efficient heat dissipation, and reduced interference. A transparent top window allows users to admire the tubes and internal electronics while operating, reinforcing its audiophile aesthetic. Compact with dimensions of 120 x 75 x 18mm and a weight of 252g, the P10-PRO is an ideal solution for enjoying the characteristic tube sound both on the go and at home.