Woo Audio WA22 Gen 2 Headphone Amplifier

A fully balanced design means the signal path is kept separate for both the left and right channels from input to output. This significantly improves channel separation, resulting in a wider, more precise soundstage and cleaner imaging compared to single-ended amplifiers.

Yes, the WA22 Gen 2 includes a dedicated preamplifier output. This allows you to connect it directly to a power amplifier or active speakers, making it a versatile hub for a high-end desktop or living room Hi-Fi system.

The impedance switch allows you to optimize the amplifier's output to match the specific requirements of your headphones. The HI setting is generally better suited for high-impedance headphones, while the LO setting provides better control and stability for lower-impedance models.

No, the amplifier features autopolarization, which automatically adjusts the bias for the tubes. This makes tube rolling and maintenance much simpler, as you do not need to manually calibrate the unit when changing compatible tubes.

With an output of 1500 mW at 32 ohms and a robust all-tube architecture, the WA22 Gen 2 is designed to handle power-hungry headphones with ease. It provides the necessary current and voltage swing to ensure your headphones perform at their full potential.

Like any tube amplifier, the tubes will eventually need to be replaced depending on your usage hours. Beyond that, the point-to-point wiring and durable aluminum chassis are built for longevity, though you should ensure the unit has adequate ventilation to manage heat.