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Shootout of Nos 6sn7 tubes

I will have shootout between TS BGRP, RCA vt231, KR vt231, Syl vt231, Raytheon vt 231 and "Bad boy" next weekend.

If I get MELZ 6N8S 6SN7 Metal Base next week, then I will also include it in shootout


RCA5691, Psavne Acme 300B, Psavne Acme 805 are also being used in Line Magnetic 508 amplifier.

Speaker will be Lansche 4.1 with plasma tweeter.

Digital source will be Dave and HMS fed by ripped CD stored in ssd drive of Cocktail audio x30.


I will play

Eva Cassidy's 'Autumn Leaves"

"Trinity Sessionn " by Cowboy Junkies

For classical orchestra, "Trittico" directed by Fennel.

"Still harry after all these years" will be for fusion jazz.

Any more suggestion gentlemen and ladies.

Thomas
shkong78

Showing 5 responses by testpilot

testpilot
983 posts
 
@highstream

Check out this link http://psvanetube.com/wordpress/which-6sn7se-should-i-get/

testpilot
983 posts
 
The Melz 1578 should be dead quiet with no buzzing or hum.  If you want the best of the best 1578 look for a pair manufactured in the 70's.  Tung sol black glass round plates are over rated (for their asking price) and their price is due to their rarity.
testpilot
983 posts
 
Melz quality controlled started to suffer in the 80’s.  If you want the best Melz 1578 look for a pair manufactured in the mid 70’s.  The hole plates construction is slightly different than tubes manufactured in the 80’s.  The 70’s 1578 do not have the slightly closed in high frequency extension like the 80’s tubes.  
testpilot
983 posts
 
When you refer to "closed in highs" do you mean less extension or less high-end energy than 1970s?
The 70's 1578 have more high end extension which translates into a more balance sound. 

testpilot
983 posts
 
Is everyone ordering their 1578 from the same eBay seller?  Seems to be a lot of poor quality and noisy tubes being sold?  Some Ukraine and Russian sellers have been known for selling QC rejects. 
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