Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: formuladale on April 07, 2025, 11:20:20 AM

Title: tube converter for crack headphone amp
Post by: formuladale on April 07, 2025, 11:20:20 AM

Will this work in my crack headphone amp with speedball. The more I researched this question the more confusing it became. The top is for a 6sn7 and the bottom plugs into  headphone amp where the 12au7  plugs into. And it says 6.3 volts on it. Thank You Dale Young   

Title: Re: tube converter for crack headphone amp
Post by: adeep42 on April 07, 2025, 04:01:13 PM

I used a 6SN7 with an adaptor with my Crack plus Speedball. I felt it was a really good.

Title: Re: tube converter for crack headphone amp
Post by: formuladale on April 08, 2025, 01:39:56 AM

Ok thanks ,  Just built this amp  and didn't want to damage it in any way. I have lots of different 6sn7 tubes that i use in my tube preamp.

Title: Re: tube converter for crack headphone amp
Post by: superdonkey on April 14, 2025, 02:02:17 AM

@formuladale

Where did you pick that up?  I've been considering trying out a few 6SN7's.

Thanks,
Greg

Title: Re: tube converter for crack headphone amp
Post by: adeep42 on April 14, 2025, 04:47:50 AM

garage1217.com

Title: Re: tube converter for crack headphone amp
Post by: formuladale on April 14, 2025, 10:24:46 PM

   Bought it on  ebay . I paid $20 and that included tax and shipping from seller 12ax7b SOUND. few months ago. Now he wants $18.66 / each + $25 shipping. Apparently the tariffs kicked in. It appears to be built well. To be honest with you there really isn't enough difference in sound from the stock 12au7 tube to really play around with this adapter. Regards Dale