Conrad Johnson Owners.com

This is what Mr Manley states regarding the bias on his very good sounding professional studio power amplifiers.

Happy listening

Oh Dear Jesus, I am as you are with the CLXs, RJ. The more I listen to them, the more grows my love and always hearing new things that I never heard that they were there...and even more each day. Conrad Johnson has a such transparency and it sounds quality shines without any doubt. I got for a loan ...

Hola, Admin is right!. I also recommend when powering on the system, the last in the sequence is the power amplifier, but wait at least one minute and then power the amp. And turning the system off, turn the power amp off and wait at least one minute and then proceed to power off all the devices tha...

Thank you my friends, I do feel you and your concern. Tim gave a lot of advice and those make a lot of sense. The built quality, for those who like the good built things, the only cables that are in the unit are in the power supply, from the IEC power AC connector to the main board and the hand made...

I had a problem with my HOLO DAC, and went back to my Exasound DAC. The truth is, I am not missing the Holo very much...this Exasound dac is very good. Of course the Holo May Kte is a better DAC. I was not aware of this. What happened? I don't know, it fails to turn on. Only red LED on. You can hea...

Hey jimbones, I'm glad you liked the GL. That's the one that I am using. To me is the best S/N and love the harmonic texture too. Very dynamic and the bass is robust, clean and well defined. I had a problem with my HOLO DAC, and went back to my Exasound DAC. The truth is, I am not missing the Holo v...

There are general rules, and for me, the most important is: do you like what you hear? It's your system. Just enjoy those fine tunes as my friend RJ always says. You are describing exactly what CJ quality sound is. Also, your speakers and system is not a penny cost system. The reason why you are exp...

Thanks for letting me know that are factory caps. Sprague are a very well known brand making caps. Being the speakers so sensitive, just play any song and adjust your pleasant level. Then stop the music. Don't touch anything else and leave the volume knob untouched. If you don't have any noise, you ...

Hola Admin, The orange color of the Caps on the bottom left seems to be non original. If these caps are part of the signal, these could be the culprit of the problem. Reading you also, the most principal suspect are the small signal tubes. You should not use the EPL circuit. It is too noisy. If you ...

Hola bobbyleelamp, I had the opportunity to have a serious listening session with them. Not only they are huge, the sound is very nice and well defined. Big presentation comes along with them. Congratulations! Conrad Johnson quality sound shines with them. To my ears, electrostatic speakers are the ...

Hola,
Here is a much better understanding why the tubes are different in their pin connections>
https://www.jj-electronic.com/en/6550
https://www.jj-electronic.com/en/el34

Happy listening!

The Company Conrad Johnson was founded in 1977 with their first product, the PV-1 preamplifier that launched in that year. These great guys, Bill and Lew had a small garage where they did all their electronic research, their design and started to build their Company. The circuity used on their produ...

Yes, they do have top match good parts. They were made before the SE (Special Edition series). What the SE version does has the latest circuit topology (the shortest possible) and choosing how to improve the S/R and harmonic texture. The best parts are very picked for this purpose too...this is what...

Hola, I think AJ nailed. Due to the age of the amp, I think you have a bad power transformer. Excessive heat usually the culprit is the power transformer. Fresh caps in the power supply will get rid of that hum, small signal tubes produce the white noise. Sorry being the bad news guy. You might find...

Hola jimbones, Well, certainly people is entitled to have its own preferences and liking. Me, I never will go back to the 6550s(C) having the KT-120. To my ears and liking, I have much better bass control, making it tight and very well reproduced. There are musical notes with a deepness when the mus...

well, time really goes by, and Putin is over 70, so he won't last for ever. I was talking or thinking metaphoric way...it's a saying here in Costa Rica: it won't last 100 year or a body whom can stand it. I just believe that Ukraine is totally devastated and the country will need at least 10 years f...

Hola Chicos, I am very sure that this is a temporary state regarding tubes. We know that Putin's war against Ukraine is the why there are no tubes for the moment. Sharks are all over the world...and of course they are taking advantage of the moment. But I assure you that soon there will be more tube...

It is such another fantastic audio designer and builder that I knew someone was going to chime and help!

I think that good things are coming...

Hola Emiliano,

This is what Conrad Johnson recommend for your Premier Seven:

https://conradjohnson.com/vintage-conra ... -products/

Read the manual that correspond to yours, and there is the tube list for yours.

Happy listening!

Audio Research Corp is alive!!!!

https://www.theabsolutesound.com/articl ... rporation/