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.

7aeeb429 76a8 4040 a90e 93802cf27573shkong78
Someone tipped me about the manufacturing date on the etched note of the tube.

The 1578 that I got was made in 1980.

The 1578 that I got was made in 1983 not 70's.

8n6s Nos tube was made in 12/78.

Even without 1578 notation, some tubes are still pretty good for the price.
QUAD FOUR Matched Balanced Russian 6N8S 6SN7 double triode TUBE NEW NOS | eBay

After listening to 1578 Melz, I am back to Nos 6n8s tube made in 1978 that I got quad at 46$.

By the way i got my first serious audio system on 1978.

What a coincidence.

This is a steal.

It sound musical with good balance of full bass and sweet treble.

Jump at it before they run out of this batch.
I have a pair of Melz 1578 tubes. Can you please tell me how to check for date of manufacturing?
If you look for etched sign in the middle of tube, then you can find the year like 80 or so.

After listening to 6n8s tube made in 1978 for several hours, I am back to Kenrad vt 231.

KR also has nice bass with sweet and refined atmostphere.

Definitely KR vt231 is at least half notch or even one notch above 6n8s .

Now I have 16 different variants of 6sn7 tubess.

After changing tube, sound also change as if new pre is being used.

It is like tasting various wines or coffees.

But if you do lot of tube rolling, be sure to use socket saver.