[OICWUTUDIDTHAR]

Quote:

Thanks for the kind words....
 
Soundstage, bass and mids are the real strong points of the cca's. Very revealing with the HE500's and Lyr.
Actually the Lyr with 500's and these cca tubes are very tough combo to beat..
 

 
6922 / E88CC / CCa DUAL TRIODE
 
These ones?

 

[Iamnothim]

Quote:

 
6922 / E88CC / CCa DUAL TRIODE
 
These ones?

Hate to be picky but they are all "dual triode", that is what the "CC" designation is.
 
 

 
Note two of everything.

 

[Iamnothim]

Quote:

Decided to take the plunge and order myself some good schiit (Lyr)
 
I'll be powering Hifiman HE5-LE's and i'll be feeding the Lyr from the pre-outs of a Maverick D1.
 
With the above combo in mind, what sort of tubes would benefit me?
 
I noticed the HE5-LE's were very bass light when plugged into the D1, i don't know if it's because it can't supply enough power (1W headphone output) or because the headphones are just bass light by design.

Since you are in the UK, you might be able to find some Mullards for a better price than here in the States since the factories were in the UK.
They are said to have a warm sound and are very desirable.
They are on my list to buy.
 
Others here will give you more info or correct me.

 

[OICWUTUDIDTHAR]

Quote:

Hate to be picky but they are all "dual triode", that is what the "CC" designation is.
 
 

 
Note two of everything.

Would you mind linking me to the exact tubes your talking about that pair well with the he-500?
 
http://www.ebay.ca/itm/MP-NIB-AMC-6922-6DJ8-E88CC-7308-CCa-preamplifier-tube-845-211-300B-2A3-Amp-/150985056523?pt=Vintage_Electronics_R2&hash=item232769210b&_uhb=1#ht_566wt_1163
 
What about these?

 

[eddiek997]

Quote:

 
6922 / E88CC / CCa DUAL TRIODE
 
These ones?

These are all variations (and fully compatible) with the 6DJ8 type tube (which is what the Lyr uses).
 
Pretty much the best tubes for use in the Lyr with HE500's are the Siemens and Halske brand, the CCa variety. They are rare and much sought after. They sell on ebay and audiogon for upto $500 for a pair. 
I have a pair listed for sale on the forums here (link..)
 
Brent Jesse has a very informative page for these type of tubes. Link Here,
Joes Tube lore is also a good read but this thread is tough to beat (long read though)

 

[Iamnothim]

Quote:

Would you mind linking me to the exact tubes your talking about that pair well with the he-500?
 
http://www.ebay.ca/itm/MP-NIB-AMC-6922-6DJ8-E88CC-7308-CCa-preamplifier-tube-845-211-300B-2A3-Amp-/150985056523?pt=Vintage_Electronics_R2&hash=item232769210b&_uhb=1#ht_566wt_1163
 
What about these?

Give me a bit and I'll assemble an opinion about what I know.
I don't know anything about those valves, but I will look into them.
I want you to get off on the right foot, but I have a total of 12 pairs in my collection.  Others here have far more.
 
I've been getting into the electrical components in valves so that's why I passed on that info in the post above.  I don't like to be corrected so I try to refrain from doing it to others.  As a matter of fact I end up being off base some time.  I enjoy researching the codes etched on the valves.  They reveal the date and factory where they were made.  I can do this for Philips and I'm working on understanding the others.
 
I'll go looking a bit and see what I might find for you.  So hang in there.  I'm certain others will chime in.
 
I will say that E88CC's and 6922 variants are a step up.  They were used mostly in test equipment and government applications. The E188CC is also very nice.   These are the types, there are other significant factors that contribute to the sonic signature.  Manufacturer, getter, shield, year, etc.

 

[Iamnothim]

Quote:

These are all variations (and fully compatible) with the 6DJ8 type tube (which is what the Lyr uses).
 
Pretty much the best tubes for use in the Lyr with HE500's are the Siemens and Halske brand, the CCa variety. They are rare and much sought after. They sell on ebay and audiogon for upto $500 for a pair. 
I have a pair listed for sale on the forums here (link..)
 
Brent Jesse has a very informative page for these type of tubes. Link Here,
Joes Tube lore is also a good read but this thread is tough to beat (long read though)

I haven't heard these but they are very fine valves.  Back a page or two, both Eddie and his valves have been vouched for.
The pairing with the HE500 is important as well.  Again, those are top shelf valves.
So much so that I want them.
I have no experience in the HiFi Man pairing.

 

[toschek]

What do you guys think of these here - http://www.ebay.co.uk/itm/NOS-LORENZ-BWB-PCC88-TUBE-MATCHED-PAIR-for-6DJ8-6922-E88CC-MILITARY-ISSUED-/290848900203?pt=Vintage_Electronics_R2&hash=item43b7f2046b

 

[steez battalion]

Hey guys,
 
I've been using my lyr for about a week and one of the tubes (GE 6BZ7) has been microphonic since the first day. I decided to wait and see if it would go away after some burn in but it seems like it's there to stay. This is with my k701's which are fairly insensitive but I've got some lcd-2s on the way and I'm wondering if they will make the microphonics less noticeable since these cans are orthos and all. The obvious answer from the residents of this thread will be to buy more tubes but I got a feeling if I get caught up in this business I might end up homeless. Well in that case, which tubes under $60 would pair well with lcd-2s in your experience? I mostly listen to electronic music and instrumental hip hop. Thanks for your time.

 

[eddiek997]

Quote:

Hey guys,
 
I've been using my lyr for about a week and one of the tubes (GE 6BZ7) has been microphonic since the first day. I decided to wait and see if it would go away after some burn in but it seems like it's there to stay. This is with my k701's which are fairly insensitive but I've got some lcd-2s on the way and I'm wondering if they will make the microphonics less noticeable since these cans are orthos and all. The obvious answer from the residents of this thread will be to buy more tubes but I got a feeling if I get caught up in this business I might end up homeless. Well in that case, which tubes under $60 would pair well with lcd-2s in your experience? I mostly listen to electronic music and instrumental hip hop. Thanks for your time.

Make a note of which side is giving you problems. Then swap the tubes around (left to right right to left) and see if the noise follows. If it doesn't, the problem is not with your tubes. Check the cables going into the amp (try swapping those around too).
 
For tubes at you might like the amperex bugle boys with LCD's (under $60) with hip hop. You're not too concerned with imaging just bass and speed which is where the Bugle boys are just fine.

 

[steez battalion]

Thank you for the suggestions. I already swapped them around and isolated the problem to 1 tube. I can also hear the sound when carefully touching the top of the culprit while the other one is completely silent. I'll take a look at the amperex you mentioned.

 

[eddiek997]

Quote:

Thank you for the suggestions. I already swapped them around and isolated the problem to 1 tube. I can also hear the sound when carefully touching the top of the culprit while the other one is completely silent. I'll take a look at the amperex you mentioned.

Bummer about the bad tube.
 
It saddens me every time I hear of the demise of one.

 

[HK_sends]

If they are ones you got from Schiit with the Lyr, send Jason (and/or Schiit support) an e-mail...they should get you fixed up.
 
Cheers!

-HK sends

 

[HK_sends]

Quote:

What do you guys think of these here - http://www.ebay.co.uk/itm/NOS-LORENZ-BWB-PCC88-TUBE-MATCHED-PAIR-for-6DJ8-6922-E88CC-MILITARY-ISSUED-/290848900203?pt=Vintage_Electronics_R2&hash=item43b7f2046b

They are the same exact (but more expensive than) ones as these: http://www.ebay.co.uk/itm/PCC88-7DJ8-NOS-LORENZ-SEL-TUBES-MTCH-2PCS-/390541761887?pt=Vintage_Electronics_R2&hash=item5aee1a5d5f&_uhb=1
Except they are sold as New-Old-Stock (NOS) with posted test results, while the cheaper ones aren't sold as NOS, but advertised as matched (but no test results).
 
Cheers!

-HK sends
 
PS - The US eBay link for those tubes is here:
 
Cheap but matched - http://www.ebay.com/itm/PCC88-7DJ8-NOS-LORENZ-SEL-TUBES-MTCH-2PCS-/390541761887?pt=Vintage_Electronics_R2&hash=item5aee1a5d5f
 
Expensive but NOS and matched - http://www.ebay.com/itm/NOS-LORENZ-BWB-PCC88-TUBE-MATCHED-PAIR-for-6DJ8-6922-E88CC-MILITARY-ISSUED-/290848900203?pt=Vintage_Electronics_R2&hash=item43b7f2046b

 

[toschek]

Quote:

They are the same exact (but more expensive than) ones as these: http://www.ebay.co.uk/itm/PCC88-7DJ8-NOS-LORENZ-SEL-TUBES-MTCH-2PCS-/390541761887?pt=Vintage_Electronics_R2&hash=item5aee1a5d5f&_uhb=1
Except they are sold as New-Old-Stock (NOS) with posted test results, while the cheaper ones aren't sold as NOS, but advertised as matched (but no test results).
 
Cheers!

-HK sends
 
PS - The US eBay link for those tubes is here:
 
Cheap but matched - http://www.ebay.com/itm/PCC88-7DJ8-NOS-LORENZ-SEL-TUBES-MTCH-2PCS-/390541761887?pt=Vintage_Electronics_R2&hash=item5aee1a5d5f
 
Expensive but NOS and matched - http://www.ebay.com/itm/NOS-LORENZ-BWB-PCC88-TUBE-MATCHED-PAIR-for-6DJ8-6922-E88CC-MILITARY-ISSUED-/290848900203?pt=Vintage_Electronics_R2&hash=item43b7f2046b

 
Cool thank you.   What do you think of these in terms of SQ?   Are they good?   I've got a matched pair of Amperex JAN 7308s and a matched pair of Telefunken E88CC and the stock tubes already, just want to try some other options.