The Crack is indeed a phenomenal amp for the price.   It was the 3rd headphone amp I built and I have not built another since.   The first two amps are in the closet collecting dust....

Very nice case design.  I like it.

Indeed. Very easy to build.  Just take your time and follow the excellent instructions.      

Any news on the revision?   And, did you do well in those two triathlons?  

Because 100uF was not available at Parts Connexion.   And because that is what Beefy did...   100 uf  capacitors come with the kit.   Quote:  

The speedball went in first and then a day or two later the caps went in.  I didn't spend much time comparing the difference. The tung-sol 5998 tube is the one that really stands out. Its gives the amp more clarity and tighter bass.  My ears really like it.  YMMV.   Quote:  

My ears liked the Tung-sol  5998 tube upgrade the most.  Followed by the large caps.   Quote:  

It was a subtle difference.  I'm still new at this hobby and really don't know how to describe it.  Anyway, it was an inexpensive upgrade.    Quote:  

I finally finished my Bottlehead Crack + Speedball + Upgrades.  Its painted with rustoleum hammered copper and the wood has a gloss finish on it.   Upgrades Speedball Neutrik locking jack TKD 2CP2511 100kohm pot Genuine Sylvania Pilot Light 2.2µF Axon film bypass cap on the last...

I'm just using a grubDAC.   

Quote: Same here.  

My crack + speedball + some upgrades is coming along slowly but surely.   

1st - Audio Technica ATH-AD700 2nd - Sennheiser HD600 3rd - AKG K702

Any updates on the production version?

Its a lapel pin I'm using to cover up a hole I decided not to use.

I finally got around to posting some pictures of my MOSFET MAX. Its wearing Rust-Oleum aged copper paint and has Elna RFS Silmic II caps in the signal path. The tubes are 12FM6. It also has an on board grubDAC. Sounds great with AKG K702's.      

I started building my own  gaming computers in my late 30's. I got Half-life 2 as a Christmas present and the old computer I had just wasn't up to the job. So,I decided to build my first custom gaming machine. I've never bought a brand name computer since.   I got into DIY Audio  last year...

Quote: Yep, I've seen your build and have been using it as a benchmark.   

I have my crack and speedball kit to.  Just waiting for the mail man to deliver the Axon film caps so I can start building it.  

Very impressive!  I didn't get into DIY until I was 44.

Any news on when a production board might be coming out?   

Check out the BOM on the MiniMax and the Millett Max.  It won't take you long to figure out what is missing on the MOSFET MAX BOM.   http://www.diyforums.org/MiniMAX/MiniMAXbom.php   http://www.diyforums.org/MAX/MAXbom.php   I'm almost done building my MOSFET MAX.  Just have to...

BOM is Bill of Material.  A.K.A a parts list.  http://www.diyforums.org/MOSFET-MAX/MOSFET-MAXbom.php   Mouser is a parts suppler.  http://www.mouser.com/   The Mouser parts list on the BOM is more up to date.    Quote:  

Are there any performance issues with installing the RB12R/L trimmers reversed on the PCB with the trimmer screws father away from the tubes?  I'm thinking probably not, but I want to make sure. The reason I'm asking is because I want the trimmer screw holes to be father away from the tube...

Those four transistors will be the first to go in.  Backwards / reversed of course.   Quote: