Shuguang and Psvane can be bought at Grant Fidelity but I have read that Good Component has a website and is another option although they may be located in China. Has anyone bought these tubes from this company?
suggest sending AGon message to member trelja - have bought black treasure KT 88s and 6sn7s from him - don't know if he carries the 300b but if he does my experience has been same quality as Grant, better price, excellent service
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