Review: Phase Linear 700b Amplifier


Category: Amplifiers

I have on a mission to find a clean natural sounding amp to power the ALIII. The ribbon drivers present a very difficult load. I found a 700 b rebuilt by an electrical engineering professor who does it as a hobby. WOW. So this a a mint 700b and maybe upgraded slightly from original. Without going into long analysis of music this amp has massive power and transparency and it does sound more tube than solid state unless you drive it to clipping. The closest thing I have heard that compares is the Boulder or Levinson amps which are thousands of dollars. In 1978 money this amp approached the $5000.00 price tag. Anyway I only paid $500 and what a steal. It is like buying a Ferrari for the price of a Chevy Cavalier. And being vintage it will go up in value. I would avoid overdriving. However, if this amp was used on efficient speakers of the cone design one would be operating at about 5-10 watts giving you massive reserves and low distortion. This amp would probably blow a high efficiency speaker. I assure you that you will be listening to all your music all over again. This amp proves that solid state does not have to sound harsh.

Associated gear
Carver ALIII speakers
Carver CT17 preamp

Similar products
Audio Research, Krell/ Mark Levinson
crawfojb
Yes I had one of these new in the late 70's. It will clipp at 625 a side into 8 ohms. It is one hell of a power house. mine built up so much heat I has to run a box fan on it. this is while it was in its cabniet.Also recently had the sries 2 700. nice also. The levinson will make much more tranparent sound on the proper speakers. Enjoy It !
Yep. What a way to go!
Sometimes I have nightmares about hooking up a Phase 700 to my Lowthers!
I first heard the Fuzz Linear in the mid 1970s; great amp for driving Bose 901s.