Bottlehead Forum

Bottlehead Kits => BeePre => Topic started by: brightcity on March 21, 2018, 07:50:51 AM

Title: BeePre Output transformer advice
Post by: brightcity on March 21, 2018, 07:50:51 AM

Hello, I was wondering if anyone has used or recommends a output transformer for the BeePre?

I recently added 10K:10K transformers to the output of my DAC after the output cap and it did wonders for the sound.

Title: Re: BeePre Output transformer advice
Post by: Paul Birkeland on March 21, 2018, 08:04:31 AM

What would you like to accomplish by adding a transformer?  (a big part of why the BeePre sounds the way it does is the lack of output transformers)

Title: Re: BeePre Output transformer advice
Post by: brightcity on March 21, 2018, 08:59:32 AM

No reason other than it benefited my DAC. True, it will probably change the way it sounds.

Title: Re: BeePre Output transformer advice
Post by: Paul Birkeland on March 21, 2018, 09:05:47 AM

Generally, a 1:1 transformer at the output of a component is pretty uncommon.  It's more common to see some step-down, which can help with driving long cables.

What is the output impedance of your DAC?

It's completely reasonable to add 10K:10K input transformers to the BeePre.  We left holes on the chassis that will accommodate several different transformers.