swampy
04-12-2010, 15:11
Audio Note Kondo Clone - Tube Pre-Amp M7
This is a scratch DIY Build. It uses the Audio Note Kondo M7 pre-amp circuit but has been tweaked to use Mullard E80CC SQ Tubes. It can also use 12AY7 Tubes which are reasonable cost.
2 RCA Inputs, 1 Output
Ultra quiet (totally silent) re noise and hum due to overkill on the power supply which takes up 2/3rds of the case !!
Separate HT and Heater Transformers.
Regulated Heaters
10H HT Choke
CRCLCRC Power Supply.. 3 PI Network Supply
Star Earth
Silver in Teflon Audio Wire
Hard Wired
PEC Carbon Volume Control
MDHT Film Foil Output Caps
2 x NEW Mullard Gold Pin E80CC Tubes
I am only looking to recover the parts cost for another project. This would best suit a Tube power amp as it has plenty gain and drive. £290 with the the 2 x Mullard Tubes which are £75 each on eBay and brand new with only several hours use making the pre itself £140. Buyer to collect. I'll sell it without tubes maybe. Also if you want to try it in your own system for a day then no problem.
I have been using it with my F5 Class A and it has a little too much gain so switching back to my B1 buffer.
http://www.dms-audio.webspace.virginmedia.com/photos/pre-1.jpg
http://www.dms-audio.webspace.virginmedia.com/photos/pre-2.jpg
This is a scratch DIY Build. It uses the Audio Note Kondo M7 pre-amp circuit but has been tweaked to use Mullard E80CC SQ Tubes. It can also use 12AY7 Tubes which are reasonable cost.
2 RCA Inputs, 1 Output
Ultra quiet (totally silent) re noise and hum due to overkill on the power supply which takes up 2/3rds of the case !!
Separate HT and Heater Transformers.
Regulated Heaters
10H HT Choke
CRCLCRC Power Supply.. 3 PI Network Supply
Star Earth
Silver in Teflon Audio Wire
Hard Wired
PEC Carbon Volume Control
MDHT Film Foil Output Caps
2 x NEW Mullard Gold Pin E80CC Tubes
I am only looking to recover the parts cost for another project. This would best suit a Tube power amp as it has plenty gain and drive. £290 with the the 2 x Mullard Tubes which are £75 each on eBay and brand new with only several hours use making the pre itself £140. Buyer to collect. I'll sell it without tubes maybe. Also if you want to try it in your own system for a day then no problem.
I have been using it with my F5 Class A and it has a little too much gain so switching back to my B1 buffer.
http://www.dms-audio.webspace.virginmedia.com/photos/pre-1.jpg
http://www.dms-audio.webspace.virginmedia.com/photos/pre-2.jpg