I need to retube my amp and I'm having trouble deciding whether I should buy my tubes from Audio Research or buy them on the open market. If you have any experience with this I'd appreciate your help.
Unless I am mistaken, Upscale Audio also burns in their output tubes. Not sure what their rejection rate is. However, they've given up on re-tubing the ARC VT-100.
Audio Research provides the most value for the money, especially since they burn. Stick with them unless you have a hi end tube tester and are prepared to return the dud's to the seller.
Elberoth2, et al- Read these procedural descriptions, and see how they compare with ARC's: (http://www.upscaleaudio.com/rare/tpm.htm) (http://www.upscaleaudio.com/rare/noisetest.htm) Then compare the prices on a matched set of tubes. I've been buying output tubes from Kevin for 16 years(NOS and new production), and have yet to have one failure, or disappointment.
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