Handcrafted since 2008, WA6 (2nd gen) has set the standard for headphone amplifiers in its class. It can drive full-size headphones and in-ear monitors ranging from 8600 Ohms with ease. WA6 (2nd gen) is an all-tube design, Class-A, transformer-coupled, single-ended triode (SET) amplifier. Under the hood of the all aluminum chassis is the same clean point-to-point wiring and premium quality parts found in our top tier models. WA6 (2nd gen) is an exceptional headphone amplifier for every music lover.