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Using solid state rectifiers on Cary SLI80 Amplifier
Can you use 5ar4 rectifier tubes in the cary amp, they have less voltage drop than the 5U4G 
How To Do You Measure the Quality of Your AC Power?
I've never encountered a ground loop from running more than one dedicated outlet, it would be rare. I think some mistake noise in the system to a ground loop. 
Threshold T-200. Help me choose a preamplifier
The bewitch sn3008 tube preamp has an output impedance of 10 ohm’s, they might be available in Russia. 
DAC Shootout Starts This Weekend
+1 antigrunge2 
Free Shipping - Be Careful!
I've ordered quite a few tubes from many different venders and they all used USPS, free or not, never had a problem. 
Threshold T-200. Help me choose a preamplifier
If the input impedance of the T-200 only 926 ohms, the required output impedance of the preamp should be much lower!I would think that about 50 ohms would be safe or the op could just use go unbalanced. 
Threshold T-200. Help me choose a preamplifier
Stereophile measured the input impedance of the T-200 at only 926 ohms. 
How to get into high end digital? (Feeding a DAC)
Pure digital is totally accurate but not everyone's cup of tea. We are influenced by our pastNot true nothing in audio is totally accurate. Solid state has distortion also, it's just not very pleasant to the ears. 
Which component to upgrade to improve bass control?
That looks interesting. I'd prefer to avoid tubes, thoughI believe that model is solid state. 
Which component to upgrade to improve bass control?
http://www.thebestamp.com/Active_Crossovers_ASXs/ASX-103.phpThis unit uses your current speakers and may fix your problem, it's got great user reviews. At least give him a call and find out what he has to say. 
Marantz SR7007 amp issue
It could be a bad relay 
Biggest "bang for the buck" audio gear you have owned(in your history)?
Noe there's a brand you don't see very often. How did you end up with it? Are you near their shop? I check out their website every once in a while. Their range of product is impressiveI was looking for a new tube preamp and didn't want to spend a ... 
Biggest "bang for the buck" audio gear you have owned(in your history)?
Space tech labs QA112 preamp, made my krell amp sound so much better paired with my apogee duetta 2 speakers. 
Best Way To Maximize Preamp Tube Life?
I leave my tube preamp on 24/7 because I have a class A solid state amp that takes a long time to sound it's best. 
Are all amps being built wrong?
Because a current drive amp is only useful with a speaker that has a flat impedance. Otherwise the amp will act as a tone control and follow the dips and peaks of the speaker's impedance curve. This can hardly be called "accurate"!How useful would...