David Vorhis Last-PAS mod (Audio Amateur Magazine)
Teflon wiring
All gold connectors
Silver contact switches
B+ voltage regulator
DC filament voltage regulator with dual outboard 100,000uf caps
Grid isolation resistors
Metal film resistors
Polyproylene, teflon, and polystyrene capacitors.
Randomized wiring to minimize interaction between signals
Tricked out and amazing, used to drive various McIntosh tube and Levinson ML2’s with e-stat and horn speakers
Built from the landmark Last Pas article in The Audio Amateur magazine, and then further modded along the way. Hot-rodded and Pooged does not begin to describe the sonics of this preamp. I used it in a $30k stereo with a Linn LP-12/Ittok driving Levinson amps and electrostatic speakers. It has been A-B's with numerous top rung commercial preamps and held its own.
Polystyrene, power supply all docs teflon OFHC, regulators, grid isolation resistors. I will include my marked up copy of the article, along with the orignal Dyna instructions.
Note- this was built and is sold as a hobbyist project. As such, the seller assumes no responsibility nor liability regarding the safety or compliance to industry or government standards. It is sold functional, but on an as-is basis.
$250 including shipping CONUS
Teflon wiring
All gold connectors
Silver contact switches
B+ voltage regulator
DC filament voltage regulator with dual outboard 100,000uf caps
Grid isolation resistors
Metal film resistors
Polyproylene, teflon, and polystyrene capacitors.
Randomized wiring to minimize interaction between signals
Tricked out and amazing, used to drive various McIntosh tube and Levinson ML2’s with e-stat and horn speakers
Built from the landmark Last Pas article in The Audio Amateur magazine, and then further modded along the way. Hot-rodded and Pooged does not begin to describe the sonics of this preamp. I used it in a $30k stereo with a Linn LP-12/Ittok driving Levinson amps and electrostatic speakers. It has been A-B's with numerous top rung commercial preamps and held its own.
Polystyrene, power supply all docs teflon OFHC, regulators, grid isolation resistors. I will include my marked up copy of the article, along with the orignal Dyna instructions.
Note- this was built and is sold as a hobbyist project. As such, the seller assumes no responsibility nor liability regarding the safety or compliance to industry or government standards. It is sold functional, but on an as-is basis.
$250 including shipping CONUS
Attachments
I forgot to mention- I've never sold here before and you might not recognize me. If you look at ebay, I am akmishman, and I have over 500 feedbacks at 100% positive. Thanks for looking.
I am dropping this to $175 including shipping before it goes to ebay. Sonically excellent but a hobbyist build; I would rather sell it here where I know the folks know what they are doing with home brew audio. Conus only, please.
I seriously thought about this.
I built the AVA super PAS in the mid 90’s.
Have you ever compared the two?
Thanks
I built the AVA super PAS in the mid 90’s.
Have you ever compared the two?
Thanks
johnnyk9- no I haven't. I was a long time subscriber to The Audio Amateur, and this just caught my eye. I did the Vorvis, and threw most of Walt Jung's pooges at it, and it turned out great.