Phase Linear

Explore 2 Phase Linear vintage audio models — specs, production history, reviews, and market values in the VTA archive.

If you want to understand the raw, unapologetic American muscle car era of hi-fi, you have to talk about Phase Linear. Founded by the brilliant and eccentric Bob Carver, this brand didn't just make amplifiers; it made a statement. In the early 70s, when 50 watts was considered brawny, Phase Linear dropped the 400, a true 200-watt per channel monster. It was the amplifier that brought legitimate, reliable high power to the upper-middle-class audiophile, fundamentally shifting expectations and letting the massive speakers of the era truly sing.

The legendary Phase Linear 400 and its bigger brother, the 700, are the heart of the legacy. They were famously overbuilt, with massive heat sinks and that iconic blue power meter that would swing with the music. Their sound was powerful, clean, and commanding. But collectors, be warned: that legendary power came from a circuit that ran hot. The original DC protection circuitry wasn't infallible, and a failure could send raw DC to your speakers—the infamous "Phase Linear flame-out." Finding a unit that's been meticulously serviced, with updated protection modules, is absolutely critical. Don't just plug a 50-year-old one in and hope for the best.

Owning a properly restored Phase Linear is like owning a classic supercar. It's not the most refined or detailed sound by today's standards, but the visceral thrill of that immense, controlled power is something special. It represents a pivotal moment when hi-fi broke free from the living room and started to really rock the house.

All Models in Archive (2)

Amplifiers

• 400 - 1972