The last thing you want is to buy new tubes from Joe Blow Tube Supply, only to have some fail prematurely. I definitely would do some research on the Audiogon forums and not simply buy from the cheapest supplier out there that pops on your first google search.
I had good luck with RAM Labs (tubeaudiostore.com) on a fairly recent purchase of twelve tubes to retube my Music Reference RM9 MK II. Buying from CJ is also a good option. Good dealers of vintage NOS tubes include Brent Jessee and Vintage Tube Services.
I once purchased power tubes from a self pronounced tube guru & dealer of audio equipment based in California, only to have one tubes fail within 20 hours. When I called requesting a replacement I got a lot of attitude, even though the tubes were guaranteed. He told me I had to ship it back on my dime so he could test it. I chose to cut my losses and moved on.
I had good luck with RAM Labs (tubeaudiostore.com) on a fairly recent purchase of twelve tubes to retube my Music Reference RM9 MK II. Buying from CJ is also a good option. Good dealers of vintage NOS tubes include Brent Jessee and Vintage Tube Services.
I once purchased power tubes from a self pronounced tube guru & dealer of audio equipment based in California, only to have one tubes fail within 20 hours. When I called requesting a replacement I got a lot of attitude, even though the tubes were guaranteed. He told me I had to ship it back on my dime so he could test it. I chose to cut my losses and moved on.