Home » Audio » General » Thoughts on this kit (Mini tube kit for one of ART's sponsors)
Thoughts on this kit [message #60965] Mon, 21 September 2009 15:25 Go to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
Poking around on DIY Audio Projects (http://www.diyaudioprojects.com/) and found this little kit http://www.diyaudioprojects.com/Tubes/6418-Tube-Preamp-Headphone-Kit/ Any thoughts? Looks like it might be a fun weekend project and not too 'pensive......C

Report message to a moderator

Re: Thoughts on this kit [message #60973 is a reply to message #60965] Mon, 21 September 2009 21:59 Go to previous messageGo to next message
Shane is currently offline  Shane
Messages: 1117
Registered: May 2009
Illuminati (3rd Degree)
That's a pretty cool little kit. There was all sorts of talk about pencil tubes last year? on Head-Fi/Headwize and people were p2p'ing them, but this is the first PCB I've seen. Neat little tube equivalent of the CMOY.

Report message to a moderator

Re: Thoughts on this kit [message #60975 is a reply to message #60973] Tue, 22 September 2009 13:39 Go to previous messageGo to next message
SteveBrown is currently offline  SteveBrown
Messages: 330
Registered: May 2009
Grand Master
It uses op amps! Oh no! That's not a tube preamp! Rolling Eyes

Report message to a moderator

Re: Thoughts on this kit [message #60976 is a reply to message #60975] Tue, 22 September 2009 14:27 Go to previous messageGo to next message
Shane is currently offline  Shane
Messages: 1117
Registered: May 2009
Illuminati (3rd Degree)
SteveBrown wrote on Tue, 22 September 2009 13:39
It uses op amps! Oh no! That's not a tube preamp! Rolling Eyes



op-amps are the devil's work Twisted Evil Nothing kills the sound faster Rolling Eyes

Report message to a moderator

Re: Thoughts on this kit [message #60977 is a reply to message #60976] Tue, 22 September 2009 17:39 Go to previous messageGo to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
some op amps are bad from the word go. the plus and minus power supply must be the exact voltage to work correctly. Bob Carver has info on this, he and others were duped into using op amps that were defective. A lot of kenwoods, sansuis used these op amps , They sounded distorted, this could not be fixed without redesigning the preamp circuit. this is where the bad rapport came from. Op amps are supposed to sound good if done right.

Report message to a moderator

Re: Thoughts on this kit [message #60979 is a reply to message #60977] Tue, 22 September 2009 19:10 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18682
Registered: January 2001
Illuminati (33rd Degree)

Burr Brown's are really nice. A bit pricey though.

Report message to a moderator

Re: Thoughts on this kit [message #60987 is a reply to message #60979] Tue, 22 September 2009 21:19 Go to previous messageGo to next message
Shane is currently offline  Shane
Messages: 1117
Registered: May 2009
Illuminati (3rd Degree)
Wayne Parham wrote on Tue, 22 September 2009 19:10

Burr Brown's are really nice. A bit pricey though.





Yah.. That's all I've used in my builds. They have a distinct sound as compared with a couple of the other's I've tried. A little smoother, "darker" sounding for the most part. Others have had a more edgy high end and more pronounced grainyness.

Report message to a moderator

Re: Thoughts on this kit [message #61011 is a reply to message #60977] Thu, 24 September 2009 10:44 Go to previous messageGo to next message
SteveBrown is currently offline  SteveBrown
Messages: 330
Registered: May 2009
Grand Master
Yep, I was only half kidding. I recently did some tests w/op amp as a preamp. Some turned out pretty good, but what I did was build a PS with Black Gate electrolytics, and film bypass, in the pre I used paper/oil output caps, and a TKD volume pot and tantalum resistor for feedback. So yes, if you surround it with premium parts and you use newer generation op amps (no 741's please!), I think you can do well. Switching back to all tube, however, soundstage improved, tone improved, etc. Not a night/day difference, but if I had the option (which I do), I would not use the op amp route. Speaking of which, I need to draw up a picture of my latest line stage. It sounds amazing (IMHO). Very simple, uses one Russian 6N6P, and a shunt reg PS.

Report message to a moderator

Re: Thoughts on this kit [message #61016 is a reply to message #61011] Thu, 24 September 2009 18:38 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18682
Registered: January 2001
Illuminati (33rd Degree)

Very cool, can't wait to hear more about your 6N6 preamp!

Report message to a moderator

Re: Thoughts on this kit [message #61021 is a reply to message #61011] Thu, 24 September 2009 21:15 Go to previous message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
SteveBrown wrote on Thu, 24 September 2009 10:44
.....I need to draw up a picture of my latest line stage. It sounds amazing (IMHO). Very simple, uses one Russian 6N6P, and a shunt reg PS.



I assume you are doing this as I type. Get 'er drawn, Steve.

Report message to a moderator

Previous Topic: My wife says I have a problem?
Next Topic: Ordering from Parts Express - ART discount?
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Tue Apr 30 14:51:21 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Smith & Larson Audio
Smith & Larson Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest