In Reply to: Reliability analysis posted by Jim Doyle on January 25, 2012 at 17:41:34:
Jim,
In the USA market, here are three makers of single ended DC amps, two current, and one recent that I know of.
The FI amps, like the popular middle-priced "X" is a DC. Dennis Fraker's Serious Stereo amps have been DC since 1989. And the Moth amp's, well regarded, no longer made, are DC amps.
In all my experience in audio, I have NEVER even heard of a single failure ( due to direct coupling ) of any of these amps Jim. Have you sir ???
I have asked before about this, on this Forum, and no one has come forward and reported otherwise. I know as a fact, none of Dennis' Serious Stereo amps has ever "eaten tubes" due to a failure.
Jeff Medwin
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Chicken Little !!! Heres the reality Jim ................ - drlowmu 10:02:22 01/26/12 (12)
- It's very easy to protect against those failures, use fuses /nt - bwb 06:36:46 01/27/12 (6)
- Playing chicken: who will pop first, the fuse or the tube? (nt) - Chris O 08:55:28 01/27/12 (5)
- the fuse - bwb 11:02:40 01/27/12 (4)
- "I have no proof but I am confident " That is the path to happiness, good for you! (nt) - Chris O 06:54:35 01/28/12 (3)
- Despite your sarcasm I am confident in my design. - bwb 08:14:33 01/28/12 (2)
- Slow blow fuses are not fast enough, fast blow sound like poop in the signal path. (nt) - Chris O 16:20:53 01/29/12 (1)
- then you must agree that poop sounds excellent because my system does. /nt - bwb 19:47:59 01/29/12 (0)
- RE: Chicken Little !!! Heres the reality Jim ................ - Frihed89 11:16:28 01/26/12 (4)
- I answered my own question: The new Craig Uthus 2A3 amp is cap coupled nt - Frihed89 00:27:36 01/27/12 (3)
- That a shame ....... - drlowmu 14:04:47 01/27/12 (2)
- They come on the market very rarely nt - Frihed89 15:06:21 01/27/12 (1)
- Your Fi amp is very very similar, DC, two stage, L-W. - drlowmu 20:28:13 01/27/12 (0)