Hallo. My company S.A.P. audio is manufacturing tube amps since 1994. We are looking for Octal, China made, EL156. We wonder if you have a reasonable stock of them. We would like them to be fully tested before shipping. Pls. quote different test you may run. Can you pls. quote a sampling of 8 pcs. ? Can you pls. also quote an order for 96 pcs. ? We would like possibly like a picture of them, and to know if they are made by Liuzho, Shuguang or any other factory. Many thanks, kind regards, Vincenzo Fratello S.A.P. audio S.r.l. ITALIA