Tube preamp reliability vs SS?


I am considering buying a Conrad Johnson classic 2se pre or a used McCormack LD-2 preamp. 

 I have never used a tube pre, and am curious as to the reliability of the tube, I like to be able to turn it on, maybe wait 30 min for warm up before jamming tunes.  This is fine, my concern is the reliability of the tube, how long will it last?, also, is it a pain to change when it goes bad? Can I change myself, or must I send to factory just for this small tube? 

  • Would the the action of me putting in the new tube void any warranty, not that 3 years is long anyway  when it comes to warranties. 
128x128arcticdeth

Showing 4 responses by lowrider57

articdeath, don't be so quick to dismiss using a tube preamp just because tubes wear out every few years.
The first time you change the tubes to a different brand/type, you will hear the different sonic possibilities tubes can bring to your system.
I was hooked and now own my 3rd tube pre with a SS amp.

BTW, if you are interested in CJ, there are many highly rated used models in the $2500 range; e.g., CJ Premier 16LS and 17LS. (And I don't think the McCormack LD-2 preamp uses tubes).

Impedance matching between the tube preamp and the SS amp is critical, especially if you are still running those low-impedance mono blocks.
And as Al stated, CJ specs indicate high gain levels.

There are many tube preamps out there with low impedance and low gain.
Why do you think the tube would be a pain in the ass? There have been many members commenting on the reliability of tubes and the wonderful sonics.
The only effort on your part is finding the brand of tube which sounds best to you, since you'll eventually want to replace the stock tube with a better one. And tube rolling is fun; dealers and forum members can advise you.

But don't rush into this purchase for these reasons:
I don't see any output impedance specs listed for the Classic 2SE, can you find them?
Plus, Almarg has already alerted you to the high gain of 22 or 27 dB, 9.5 VRMS. You may have to use attenuators to have full range of the volume control.
Please list the input specs of your amp and the sensitivity of your speakers.

Don't make the common mistake of mis-matching components.
articdeath,
I didn't realise that the Classic 2SE didn't have a remote. In that case, if you are still interested in a tube preamp that mates very well with a SS amp, check out the new Atma-Sphere UV-1 priced slightly less than the Classic 2SE.

http://www.atma-sphere.com/Products/#UV-1

The sound is lush, dynamic with 3D soundstaging. No affiliation, just an owner of this wonderful new preamp. It replaced a Rogue and it's brought my system to a higher level. Google a review.
Not a contest, but I’m looking at the high gain specs of the Classic. CJ was on my short list when I was looking to buy.