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Help me decide which E88CC tubes i should buy

Hey

I spent 2 days researching about tubes, from technicalities like measurements, what to look for when buying etc how they sound and which sound the best as a common consensus.

I only need a single driver tube for my Decware Taboo MK III, currently i am using a Siemens E88CC with silver shields, 2x Tungsram EL84 and 1x Svetlana rectifier.

Khadas tone board as DAC and Fostex X00 Purple Hearts as headphones. I really like how the Siemens sounds but i am not the first owner of the amp so i can't say how much use that tube has gotten already.

I've also tried the Philips SQ Heerlen '60, which are a bit cleaner/slightly less veiled than the Siemens, they were not new either around 66%/70% of NOS value. So it may not be a direct apple to apple comparison. They seem to boost the midrange quite a bit tho which is very noticable considering that my headphones have very recessed mids.

After testing back and forth i always end up back to the Siemens and don't feel the need to look back, but as soon as i try my Philips for more than 1 hour i start to miss the Siemens. But i don't think that the Siemens are objectively better than the Philips.

Anyway. I narrowed it down to:

Siemens E88CC. cca. Telefunken cca, Amperex 7038 or Amperex PQ US made, Reflector 1975 "holy grail".

They all score well above 100% except the Reflector which are like 95% of NOS spec and all costs around 80$, except the Siemens e88cc might find for a bit less.

Any suggestions?

I couldn't find much info on the Reflector seems a bit of a dark horse except that one head-fi thread where 17 tubes get compared. Really as good as they say or just one persons experience?

It would be interesting to hear your opinions and experiences, i haven't found any posts where these tubes get compared.

Best regards


128x128yoshimitsu
yoshimitsu's avatar
yoshimitsu OP
9 posts
 
I posted 3 listings, there is a fourth one aswell for 145$. Which tested 95% NOS (14.2 mA) with well matched triodes.

It’s worth knowing that the Reflector are designed to run at 15 mA just like the ECC.

However there is a small caviat, the Siemens more often than not end up being over manufacturers specc in emission tets. I’ve seen Siemens measuring 22/23 mA that’s 150%. That’s not good either. Ideally they should be as close as possible to 15 mA. But more often than not they are above that around 16.5 mA.

The Reflectors are the opposite it’s very rare that they go up to 16 mA.

Anyway 12.5 mA isn’t strong, not even NOS, 17% lower than they should be. But of course, differences may or may not be audible.


yoshimitsu's avatar
yoshimitsu OP
9 posts
 
I checked again and my current Siemens actually has a grey shield.

I would be curious to try out Tungsram E88CC, from what little i heard they sound very good but barely anyone uses them.

Has anyone experience with Siemens 6BQ5/El84?
rodman99999
6,206 posts
 
Thanks for the above info.    The only reason I've purchased tubes, from the Germany based, eBay seller mentioned: I was dealing with him,  years before eBay was a thing and very confident of his expertise/honesty.     It's been my iron-clad rule, never to buy anything on the Bay, from anyone with less than a 100% feedback rating.      Not even an inner tube, for my Grandson's dirt bike.        There are a select few tube purveyors, this side of The Pond, in which I place my confidence.       None, on eBay.      Happy listening!
brockwired's avatar
brockwired
53 posts
 
You can try a 5670 with an adapter from tube Depot for $14 for your input tube. Another popular rectifier in Decware is a globe 80 with a 4 pin adapter. You can also roll 5z3 and 83v rectifier tubes.  

You can always try 8bq5 power tubes or EL83 tubes.
yoshimitsu's avatar
yoshimitsu OP
9 posts
 
What would the advantage/benefit be of using EL83 or 8BQ5 instead of EL84?

Has anyone experience with the black plates RCA and GE grey ovale plate from 1960? And Sylvania black plates?

I am using Tungsram EL84 now, not sure if the RCA or GE would be an upgrade.
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