Boozhound Labs Jfet Phono Pre - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th June 2012, 07:41 AM   #1
diyAudio Member
 
Join Date: Mar 2012
Location: tucson
Default Boozhound Labs Jfet Phono Pre

Just a review of the phono pre kit pre kit i completed a few days ago.

heres the link Boozhound Laboratories: JFET Phono Preamp Kit

the board and components are all high quality stuff and everything was matched pretty darn close. the board is well constructed, designed and laid out.

i was able to find the box on ebay. i used cat 5 cable wires. one on/off toggle switch, 4 rca jacks and a ground screw i stole off a burnt up marantz receiver.

two banks of 10 AA batteries in parallel for 16v rail voltage, this should last about 100 hrs. costco batteries aren't to expensive, i think the batteries are worth the cost for no PSU noise.

overall once all the parts were rounded up it went together in one beer fueled evening. which i thought was appropriate at the time, although some of the craftsmanship is shoddy and i burned my finger with my iron only once

I made it as basic as I thought was possible it fits stealthily into my system

this is my first diy phono pre and i have to say it is the best phono pre ive heard.

my other experience is all vintage stuff. philips hifi labs preamp, mitsubishi pa-01, pioneer sx 1250/780, sansui AU11000A.

stereo imaging is excellent, the RIAA really brings the low end back in well, the bass sounds much more full than the vintage gear. i dont have any way to make measurements all i know is that it sounds much much better than my older gear.

Overall satisfaction: 100%
cost: $130
difficulty:low

test gear: Pioneer PL-540 w/ Ortofon Blue cart, benchmark dac 1 pre, Emotiva XPA2, troels gravesen 3 way classics.

Proper rack and speaker stands are in the works btw
Attached Images
File Type: jpg 600474_323157281104022_1701877481_n.jpg (82.5 KB, 710 views)
File Type: jpg 282602_323157434437340_393723441_n.jpg (127.3 KB, 682 views)
File Type: jpg 428559_323157601103990_699919326_n.jpg (155.9 KB, 674 views)
File Type: jpg 527774_323157514437332_2048145375_n.jpg (79.1 KB, 663 views)

Last edited by riley.reynolds; 24th June 2012 at 07:59 AM.
  Reply With Quote
Old 24th June 2012, 07:57 AM   #2
diyAudio Member
 
Join Date: Nov 2004
Location: Bruchsal/Germany
i think its more or less a _variant_ from Salas`s simple Phono ,
with _normal_ Parts , for the starter or beginner not so bad .

Greetings

Jürgen
  Reply With Quote
Old 24th June 2012, 08:01 AM   #3
diyAudio Member
 
Join Date: Mar 2012
Location: tucson
Quote:
Originally Posted by audiotux View Post
for the starter or beginner not so bad .
i am a beginner
  Reply With Quote
Old 28th June 2012, 05:19 PM   #4
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Looks good!
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 29th June 2012, 10:05 AM   #5
diyAudio Member
 
bullpeters's Avatar
 
Join Date: Apr 2009
Location: Right next to beach, a potatoe toss to the whitewater
I built one! On batteries, black as! silent as a lamb.
I don't use it anymore but the follow up was great, the vendor seems like a really nice guy. I am using a valve pre at present. Better but not best
  Reply With Quote
Old 17th November 2012, 02:40 PM   #6
Carlp is offline Carlp  United States
diyAudio Member
 
Join Date: May 2006
Location: A New England
Instead of starting a new thread, thought I'd piggyback on this one.

I use two 9v batteries to power my BHL phono stage. They run out of steam at around 6.5v each (12-13v total). So in order to get the most out of them (I'm a miserly New Englander, after all), I thought I'd also build a supply using 4 of the drained batteries.

But that would get me up around 25-26v raw supply and that's above the 12-24v range that Jason mentions on his site. I don't know if that range is based on some max ratings for the 2sk170 jfet or if it's just an optimal range (I can't find any D-S spec on the datasheet but it does give a -40v G-D voltage - well above the 24v that Jason mentions). And Jason's email bounced so I couldn't ask him.

I realize the batteries' ability to provide current is weak at this point, but the amp doesn't draw much... Or is the poor output of the amp due to current supply of the two 9v batteries at this point and not the lower voltage?

Thanks for any insights you can give me.
  Reply With Quote
Old 18th November 2012, 06:03 PM   #7
Gluca is offline Gluca  Italy
diyAudio Member
 
Gluca's Avatar
 
Join Date: Nov 2004
Location: Back to Italy
Quote:
Originally Posted by riley.reynolds View Post
two banks of 10 AA batteries in parallel for 16v rail voltage, this should last about 100 hrs. costco batteries aren't to expensive, i think the batteries are worth the cost for no PSU noise.

looks nice. just a note, thou ... batteries noise can be higher than expected and higher than well conceived and built regulated PSU
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
JFET used in ARC PH3 hybrid phono pre amp hrnoevil Solid State 14 28th March 2013 09:57 AM
JFET Phono Pre-amp clipping JammyBStard Solid State 6 26th November 2011 06:42 PM
JFET mu follower phono or mic pre ljfont Analog Line Level 2 2nd December 2009 04:33 AM
How to house a JFET phono pre jackinnj Solid State 10 10th July 2008 12:59 PM
Phono pre, valve or jfet lndm Analogue Source 7 4th April 2006 02:11 PM


New To Site? Need Help?

All times are GMT. The time now is 09:37 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2