viconte 0 Report post Posted March 20, 2006 Hi Guys, I have the LD3 amp and need some information. The tubes im using now are 4P1S and 1K2/1B2. I did a search and found that the compatible ones are 1DF9, 1S5 and 4pi1pi. Anyone here heard the tubes 1DF9, 1S5 and 4pi1pi before? How do they sound? Anywhere in singapore I can buy/test the tubes? Many thanks Share this post Link to post Share on other sites
gfgfmoses 0 Report post Posted March 20, 2006 someone mentioned the http://www.wellaudiolab.com/index.html for tubes in Sg before. and i think now there is a upgrade things for this LDIII, using Mullard EF91 as pre. Share this post Link to post Share on other sites
kank_39 0 Report post Posted March 20, 2006 I have a LDII and i replaced the 2 preamp tubes (1B2) with Mullard DAF91. I thought that this could get rid of the microphonics but that's not the case and the "upgrade" didn't really improve the sonic performance. There's a slight difference but only if you listen hard enough. Share this post Link to post Share on other sites
viconte 0 Report post Posted March 20, 2006 (edited) thanks guys I found this http://www.erji.net/read.php?tid=168718&fp...toread=&page=34 前级:可以用1S5、DF94、1T4代换 后级:可以用4PI1PI代换。 http://www.erji.net/read.php?tid=168718&fp...toread=&page=70 前级管:1S5/1T4/DF91(欧美) 后级管:4n1n (前苏联) So it means i can use all kinds of 1S5, DF94 and 1T4 tubes right? Hi Kank, so the DAF91 is not worth it right? This 4PI1PI is extinct huh? cant find any info on it.. anyone knows whether this 4n1n is good? I wonder if any 1S5, DF94 or 1T4 tubes sound good? Any recommendations? Any shops for audition? Edited March 20, 2006 by viconte Share this post Link to post Share on other sites
Fuzzy Fuzzbucket 0 Report post Posted February 11, 2008 the 4П1Л are power amplification tubes used in oscillations also. yeah can be said as near to extinction. now only Beijing makes them and named them 4P1S... the 1S5 and the equivalents are common elsewhere but not in Singapore... Share this post Link to post Share on other sites