Conrad Johnson are a company based in Fairfax, Viginia and they have been producing high end audio equipment since 1977 when the company was started by William Conrad  and Lewis Johnson. The first amp that the company ever released was the PV-1, a vacuum tube preamplifier.

Conrad Johnson amplifiers are certainly not cheap, but that is to be expected with a brand renowned for high quality amps. Conrad Johnson has a large army of dedicated followers that certainly feel the prices are well worth it. To listen to your music in stereo you'll need two Twelve Tube monoblock Amplifier and at $7000 lets find out what you get for your cash.

The design of the Twelve tube is certainly stylish with a cool brushed brass finish, and some straight forward circuitry. The Twelve tube also has a large output transformer and with a quick look in the CJ info you'll find that this gives you a wide bandwidth with high phase linearity. All in all, nothing too unusual. It's clear that the Popularity of this amp comes from it's performance rather than design.

The Conrad Johnson Twelve Tube transitions beautifully through the upper and mid ranges as well as at frequency extremes. It has a very rich overall sound, with amazing tranparency. It really seems a cut above, even with amplifiers in similar price brackets.

Some tube amplifiers can struggle with transients usually when playing pop and rock however the Conrad Johnson Twelve sounds coherent throughout one of the very best I have ever heard.

The Twelve Tube is also not plagued with the reliability problems of many other tube amplifiers. It's another thing that really defines Conrad Johnson as an amplifier manufacturer. It's a tough cookie and very rugged which will certainly give you all confidence in a purchase.