Testing tubes for audiophiles requires much more than simply running them briefly on a tube tester. If it was that simple and people would pay $10 per tube for that it might be a viable business opportunity for existing dealers. Most testers can check for basic functionality of the tubes, but testing and rating them for microphonics, noise levels, and precise matching is much more involved and can require a significant amount of additional gear. That's why the companies that offer such extensive testing are able to and justified in charging a relatively high premium for their most select graded tubes. If you want the best tubes expect to pay for the time and effort that is required to grade, match and select them.
Why Don't Local Audio Dealers Provide Tube Testing Services When They Sell Tube Gear?
For over 40 years I have supported my local audio dealers. I gladly pay more for their expertise and service. Some of my dealers have a store front, and some work out of their home. In either case, I always support them.
I have an "all tube" system, with 19 tubes, including my DAC, Preamp and Amp. Most of my tubes are NOS, and I like to "roll" many tubes. When I need to test a tube, or want ensure that the tubes I've purchased are indeed a "matched pair," I would really love to depend on my local dealer(s) to provide that service.
For the most part, I have been very fortunate to buy NOS tubes from reputable dealers. Not always though. And when you are buying hard-to-find expensive NOS tubes, you sometimes have to take your chances.
At a minimum, audio equipment dealers should be able to provide "on-site" testing for the tube equipment they sell. Ideally, equipment dealers should be able to do "on site" testing of other tubes as well.
If a local dealer were able to service my audio tube testing requirements, I would seek them out for any new equipment purchases (including non-tube gear). That's part of having a mutually beneficial dealer/customer relationship.
Getting (and maintaining) good testing equipment isn't cheep, but it seems like a good business decision for maintaining and attracting new customers?
I have an "all tube" system, with 19 tubes, including my DAC, Preamp and Amp. Most of my tubes are NOS, and I like to "roll" many tubes. When I need to test a tube, or want ensure that the tubes I've purchased are indeed a "matched pair," I would really love to depend on my local dealer(s) to provide that service.
For the most part, I have been very fortunate to buy NOS tubes from reputable dealers. Not always though. And when you are buying hard-to-find expensive NOS tubes, you sometimes have to take your chances.
At a minimum, audio equipment dealers should be able to provide "on-site" testing for the tube equipment they sell. Ideally, equipment dealers should be able to do "on site" testing of other tubes as well.
If a local dealer were able to service my audio tube testing requirements, I would seek them out for any new equipment purchases (including non-tube gear). That's part of having a mutually beneficial dealer/customer relationship.
Getting (and maintaining) good testing equipment isn't cheep, but it seems like a good business decision for maintaining and attracting new customers?