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Bottlehead Amplifier Discussion / Comparison Thread: Crack, SEX & Mainline - Page 42

post #616 of 775
Quote:
Originally Posted by Loquah View Post
 

 

Haha. My point was that I would gladly take the Stax over the HD-800. It was no reflection on the Mainline! ;)

 

Just today, I accidentally was listening to the T1s via the Mainline and forgot to switch to balanced and high impedance modes. Even working with its hands behind its back (so to speak) I was still marvelling at how good it all sounded

It might be weird that I actually prefer the T1s + speedballed Crack/Mainline combo to the SR-507 + SR-323s. But 007 or 009 are totally a different story :D

 

Quote:
Originally Posted by MoatsArt View Post

Hi Kratos

Here's an idea. If you regret buying the GEC brown base, just sell it. I am sure you will have many willing buyers. You will probably make a profit as have others.

Hi MoatsArt,

 

Haha, thanks for your suggestion. I didn't mean that I regret buying the GEC, just I couldn't get it for a better price. The GEC is truly one of the best power tubes for OTL amps, and it is my favorite tube for my Crack, but the fact that a single power tube costs nearly as much as the price of a Crack itself somewhat doesn't make sense, IMHO.


Edited by Aeolus Kratos - 4/30/14 at 3:29am
post #617 of 775

Agreed, with all the OTL's on the market and the seemingly increasing demand for good 6as7g equivalents, I'm surprised some boutique tube manufacturer (like EML) hasn't purchased G.E.C.'s IP and tooling, if its still around, and started pumping these bad boys out.

post #618 of 775
Quote:
Originally Posted by Aeolus Kratos View Post

 

Haha, thanks for your suggestion. I didn't mean that I regret buying the GEC, just I couldn't get it for a better price. The GEC is truly one of the best power tubes for OTL amps, and it is my favorite tube for my Crack, but the fact that a single power tube costs nearly as much as the price of a Crack itself somewhat doesn't make sense, IMHO.

That's not the GEC's fault but the Crack's -  for being such a great amp at such a reasonable price :wink_face: 

post #619 of 775
Quote:
Originally Posted by punit View Post
 

That's not the GEC's fault but the Crack's -  for being such a great amp at such a reasonable price :wink_face: 


Haha, well said, Punit. The Cracks are the best budget amps for high impedance headphones IMHO :wink_face:

 

Here is a good news, I sold my Crack and I'm going to order a Mainline within this month. What is the BEST headphone paired with the Mainline in your opinion? I'm just having a K240 Sextett and HD650. I tend to choose between HD800 and T1, any ideas?

Thanks in advance.

post #620 of 775
Thread Starter 
Quote:
Originally Posted by Aeolus Kratos View Post
 


Haha, well said, Punit. The Cracks are the best budget amps for high impedance headphones IMHO :wink_face:

 

Here is a good news, I sold my Crack and I'm going to order a Mainline within this month. What is the BEST headphone paired with the Mainline in your opinion? I'm just having a K240 Sextett and HD650. I tend to choose between HD800 and T1, any ideas?

Thanks in advance.

 

The T1 is sublime with the Mainline IMO and I'm yet to hear a pairing that is better (some are perhaps as good to my ears, but none yet are better). I know many like the HD800s with annax mod (I believe this is what Doc B uses), but I personally still find the sound a little etched for my tastes on wide ranging genres (it's epic with classical though).

 

The best thing about the Mainline is that it's smooth and has excellent weight in the midrange, but it's still highly detailed with great extension so whatever you like on the Crack will just get better on the Mainline (smoother, more detailed treble, better staging, etc.). I'd base the decision on the headphones you already know that you like and just let the Mainline improve them.

post #621 of 775
Thread Starter 
Just finished installing some Russian teflon caps in the S.E.X. and am listening now. Despite reports of significant burn-in requirements for teflons, the sound is already good - probably a slight improvement over the stock coupling caps.
 
I'd say that the bass is initially a little boomy / loose, but not un-enjoyable. Details and textures through the midrange are excellent. At the treble end I think things are still a little edgy, but they have <10 minutes on them so no judgements being made just yet...
 
 

 


  

 


 

post #622 of 775
Quote:
Originally Posted by Loquah View Post
 


Lachlan neat job it looks like they where made for mounting on top of the chokes. Give them some time and the bass should tighten up and treble smooth out with burn in. After a month or two try unclipping them the full benefits sneaks up on you quietly over a little time. Listening to the sex without them once again the difference should be much more noticeable.  

post #623 of 775
Thread Starter 
Thanks Jamie. They fit well there, don't they?

I'm expecting a new pair of LCD 2s to arrive this week so there should be plenty of burn-in in a hurry!

By the way, check out the Mainline cap thread at Bottlehead for some pics and a video.
post #624 of 775

They fit well if you don't have the impedance switch boards, i had to shoe-horn them into mine above the tube sockets :normal_smile :

 

The midrange bloomyness will die down as the caps burn in, the biggest issue i had initially was a harshness in the high end making cymbals or other percussion instruments sound unpleasant.  Looking forward to hearing your thoughts when they have had some cooking time..

post #625 of 775

Any thoughts on a already built amp with similar sound quality to the Mainline might be. I could probably build it but if I can get something similar without having to do that I would prefer that. Just looking at the photos it looks pretty difficult with a LOT of parts and solder connections.

post #626 of 775

This looks an interesting product @ $22 the A5 Stereo Attenuator 36 positions course and fine adjustments, resistors are extra they offer a couple of options 24 Metal-Film -1dB/-6dB (+$8) & 24 Metal-Film -2dB/-12dB (+$5). 

 

Waiting to confirm shipping price as the cart was quoting $30 to the UK so seeing if they will send via regular USPS

http://glass-ware.stores.yahoo.net/a5stat.html

post #627 of 775
Thread Starter 
Quote:
Originally Posted by HPiper View Post
 

Any thoughts on a already built amp with similar sound quality to the Mainline might be. I could probably build it but if I can get something similar without having to do that I would prefer that. Just looking at the photos it looks pretty difficult with a LOT of parts and solder connections.

 

I haven't heard enough amps in the same league to comment, but it's a pretty safe bet that you'd be spending significantly more money than the cost of the Mainline kit. Having built four BH kits now, I'd rank them in order of difficulty like this:

 

  1. Quickie
  2. Crack
  3. Mainline
  4. S.E.X.

 

I think the SEX is more difficult mainly because it is a bit cramped towards the end and there are lots of wires whereas the Mainline has more space and is more modular.

post #628 of 775
Thread Starter 
Quote:
Originally Posted by JamieMcC View Post
 

This looks an interesting product @ $22 the A5 Stereo Attenuator 36 positions course and fine adjustments, resistors are extra they offer a couple of options 24 Metal-Film -1dB/-6dB (+$8) & 24 Metal-Film -2dB/-12dB (+$5). 

 

Waiting to confirm shipping price as the cart was quoting $30 to the UK so seeing if they will send via regular USPS

http://glass-ware.stores.yahoo.net/a5stat.html

 

That's the same general concept as the Mainline setup

post #629 of 775
Thread Starter 

I've been listening to the S.E.X. + HE-500s pretty solidly for the last few days and the teflons and Mundorfs are really starting to sing. I'm having a hard time going back to the Mainline + T1s now!!

 

Just to clarify, the T1 / Mainline combo is still more resolving and technically superior, but the S.E.X. / HE-500 combo is SOOOOO enjoyable. Smooth, lots of texture and detail - a real treat to listen to. The upper mids have an extra level of energy and life to them now (especially with strummed guitars, etc.) Can't wait to try the LCD 2s when they arrive!!


Edited by Loquah - 5/6/14 at 6:43pm
post #630 of 775
Quote:
Originally Posted by JamieMcC View Post
 

This looks an interesting product @ $22 the A5 Stereo Attenuator 36 positions course and fine adjustments, resistors are extra they offer a couple of options 24 Metal-Film -1dB/-6dB (+$8) & 24 Metal-Film -2dB/-12dB (+$5). 

 

Waiting to confirm shipping price as the cart was quoting $30 to the UK so seeing if they will send via regular USPS

http://glass-ware.stores.yahoo.net/a5stat.html

 

Great find and thanks for sharing!  I've been trying to decide what attenuator to put in my ongoing wire build.  This seems like a great option!  

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