Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Quickie => Topic started by: dgb on April 05, 2011, 02:24:20 AM

Title: quickie review
Post by: dgb on April 05, 2011, 02:24:20 AM

http://www.soundandvisionmag.com/diy/2011/03/review-bottlehead-quickie-tube-preamp

Title: Re: quickie review
Post by: Paul Joppa on April 05, 2011, 06:10:58 AM

Love it! I especially like this comment on the circuit "...if you want a simpler way to amplify audio, you

Title: Re: quickie review
Post by: Natural Sound on April 05, 2011, 06:56:00 AM

From the article;
"The circuit design is single-ended, meaning it amplifies the entire signal with a single semiconductor device"

Is a vacuum tube considered a "semiconductor"?

Title: Re: quickie review
Post by: Wanderer on April 05, 2011, 08:53:30 AM

Quote from: Natural Sound on April 05, 2011, 06:56:00 AM

Is a vacuum tube considered a "semiconductor"?

My betters are certainly free to correct me but a "vacuum tube" a thermionic device meaning it needs heat to free electrons for conduction in a vacuum (or inert gas).

In semiconductor devices conduction happens in a solid (non-gaseous) state.   

So by the definitions I know a tube is not a semiconductior. 

Title: Re: quickie review
Post by: Paul Joppa on April 05, 2011, 09:56:52 AM

Clearly the author does not differentiate between "active device" and "semiconductor," having almost never heard of any other kind. To be fair, many consider the actual working of an oxide cathode to be a semiconductor. (Does not apply to tungsten filaments though.)

Title: Re: quickie review
Post by: badman on April 06, 2011, 06:42:57 AM

Quickie indeed- no comments on sound!

Title: Re: quickie review
Post by: Doc B. on April 06, 2011, 06:55:46 AM

There are comments about sound on page 3.

http://www.soundandvisionmag.com/content/review-bottlehead-quickie-tube-preamp-0 (http://www.soundandvisionmag.com/content/review-bottlehead-quickie-tube-preamp-0)

Title: Re: quickie review
Post by: Wanderer on April 06, 2011, 09:59:59 AM

I found the test results particularly interesting, particularly the FLAT frequency responce.

Would love to see what adding a PJCCS does to the gain and distortion specs.   

Title: Re: quickie review
Post by: badman on April 06, 2011, 12:22:05 PM

Ah, cool, it read like the article was over after the first page  hahaha

Impressive FR and S/N indeed.