Phatlab Sassy (phatlabsassy)

Sassy is designed for every enthusiast and audiophile who enjoy sound of SET amp while demands more portability and practicality. Sassy as 2nd member of portable headphone amplifier (PHA) series has inherits many technologies and advantages developed for PHAntasy, the bigger sibling. One may immediately notice Sassy’s extremely compact and light-weighted ever seen for a tube amplifier. The secret is elimination of output transformer and choice of high efficiency subminiature tube. A newly developed full-discrete solid-state output stage replaces costly output transformers, which is capable of delivering precise and powerful energy into headphones no matter what impedance and sensitivity.

The biggest difference sets Sassy apart from traditional SET amp is solid-state output stage. The effort is beyond imagination and takes much longer time to come up a viable solution with satisfactory performance. The challenge is to make it stable and consume extremely low power, while faithfully delivering SET signature of sound and plenty of energy on demand. The efforts have finally paid off. Sassy is capable of up to 20V and 1A output that is something never been done in such a small form factor. Sassy meets the balance of both worlds with sweetness of Single-Ended Triode and precise slam of power transistor. Sassy’s overall tonal balance and driving capability are comparable to best amplifiers either desktop or portable formats.