Audio Note Kit 1 PSU question

eeyore · 1st April 2009, 02:10 AM

Can anyone confirm the current rating required for the choke of the AN Kit 1? I am thinking of getting the kit and adding/changing the PSU choke, since it does it for both channels, I am not sure what the current rating is, I was planning on getting a 150mA choke for this purpose. Would it be suitable? Thanks.

Rod Coleman · 2nd April 2009, 08:55 PM

For 2 x 300B SE (60..75mA each) and 4 preamp stages for stereo (8..10mA each) I would work on a 200mA minimum rating...

alternatively, separate chokes for the preamp stages makes quite a bit of difference to the sound, I believe.

If you get the 150mA rated part, can increase the 300B cathode resistance to reduce current. I like 300B-SE at the 360V 60mA recommended by Western Electric - as best sounding and kind to the valves.

azazello · 2nd April 2009, 09:46 PM

"If you get the 150mA rated part, can increase the 300B cathode resistance to reduce current. I like 300B-SE at the 360V 60mA recommended by Western Electric - as best sounding and kind to the valves."

....and You must increase mu preamp, change its anode and cathode
resistors.....I don't prefer You....The sound is different, If You use 300B
with Ia=50. 60, or 70 ma.

KT · 3rd April 2009, 12:29 AM

Hello,

I purchase and built the Audio Note Kit One back when it was sold by Angela Instruments, around 1997.

The choke that came with the kit at that time was specified at 10H/200mA.

I don't know if the specs have changed since then, but this seems to be around the range suggested by others.

Best,
KT

1st April 2009, 02:10 AM	#1
eeyore diyAudio Member Join Date: Aug 2005	Audio Note Kit 1 PSU question Can anyone confirm the current rating required for the choke of the AN Kit 1? I am thinking of getting the kit and adding/changing the PSU choke, since it does it for both channels, I am not sure what the current rating is, I was planning on getting a 150mA choke for this purpose. Would it be suitable? Thanks. __________________ DF http://diy-audio-blog.blogspot.com

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Quick Question - Audio Note M1 or AR SP-6?	john65b	Tubes / Valves	8	1st March 2009 03:03 PM
FS: Audio Note TRANS-010; Audio Note 20H 50mA choke; Black Gate Wk "power tank"	Joseph0	Swap Meet	1	24th May 2006 05:17 AM
Audio Note M1 potentiometer question	FrancoB	Tubes / Valves	1	26th February 2005 02:15 PM
Audio Note Kageki vs. EAR 859 vs. Audio Innovations: The First	Vortex	Tubes / Valves	1	2nd February 2004 12:31 AM
Audio note dac	Kovax	Digital Source	9	17th February 2003 03:33 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read

2nd April 2009, 08:55 PM	#2
Rod Coleman работник diyAudio Member Join Date: Jul 2004 Location: Warwickshire UK	For 2 x 300B SE (60..75mA each) and 4 preamp stages for stereo (8..10mA each) I would work on a 200mA minimum rating... alternatively, separate chokes for the preamp stages makes quite a bit of difference to the sound, I believe. If you get the 150mA rated part, can increase the 300B cathode resistance to reduce current. I like 300B-SE at the 360V 60mA recommended by Western Electric - as best sounding and kind to the valves.

2nd April 2009, 09:46 PM	#3
azazello diyAudio Member Join Date: Aug 2008 Location: Bulgaria	"If you get the 150mA rated part, can increase the 300B cathode resistance to reduce current. I like 300B-SE at the 360V 60mA recommended by Western Electric - as best sounding and kind to the valves." ....and You must increase mu preamp, change its anode and cathode resistors.....I don't prefer You....The sound is different, If You use 300B with Ia=50. 60, or 70 ma.

3rd April 2009, 12:29 AM	#4
KT diyAudio Member Join Date: Oct 2003 Location: USA	Hello, I purchase and built the Audio Note Kit One back when it was sold by Angela Instruments, around 1997. The choke that came with the kit at that time was specified at 10H/200mA. I don't know if the specs have changed since then, but this seems to be around the range suggested by others. Best, KT

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)