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Title: how important are matched valves? Post by: fred on May 06, 2008, 02:19:35 PM Hello, i just managed to crack a brand new 6l6 putting it in the OT and i really do not want to spend another £30 on a matched set when i still have one the works perfectly well. Also, i bent the pins on an ECC83 and i am worried that if i use it, when it comes to replacing it, the pins will get stuck in the socket. Are the pins easy to get out?
thanks. Title: Re: how important are matched valves? Post by: gbergl on May 06, 2008, 02:58:10 PM According to Kevin O'Connor from London Power and Power Scaling, matched tubes are not necessary. He states that matched tubes sound more crisp or harsh with increase amounts of odd order harmonics. Also, matched tubes will drift toward unmatched over time. He states that the asymmetries in unmatched tubes give a more warm sound and are more desirable.
These comments come at the bottom of a long web page of faq's. It's worth reading the whole page to better understand tube amps and which tubes can be substituted. See www.londonpower.com/faq.htm. The specific discussion regarding matched tubes is at the very bottom of the page. I've bent a number of tube pins and have just bent them back and put them to use. The pins are not brittle. If a pin were to break off and stick in the slot, it would not be too difficult to push it out from the inside of the amp chassis. Title: Re: how important are matched valves? Post by: fred on May 06, 2008, 04:22:45 PM thanks, thats good to hear!
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