roberjerman

Responses from roberjerman

Deja Vu Audio 300B Mono Amps
Push-pull 300B's driven by a pair of 6SN7's. Nice! About 28 watts per amp! 
Deja Vu Audio 300B Mono Amps
Be sure to have a load (speaker) connected to each amp before doing any testing (otherwise output trannies can be damaged!). An arcing tube can damage an amp! Testing all the tubes for shorts is sound advice! 
Deja Vu Audio 300B Mono Amps
Just replace the dead resistor with the same value (25w/270ohm/5%). No need for something a lot more expensive!  
The Science of Cables
@dave_b : You are right! Audiophiles can believe the stupidest things (copper vs. silver, rhodium-plated outlets, power cables, magic fuses, directionality, wire burn-in ...). Quackery is profitable, unfortunately! 
How does Amazon sell a 300.00 cartridge for 180.00?
The Denon 103 sold for $160 back in '78. And that was with a 30% markup from dealer cost! Anybody got a time machine? 
Sophia Electric Magik Box
The Magik Box is just a step up transformer - with all the inherent problems of hysteresis distortion and bandwidth. Why would anybody want to add it to the perfectly fine output of a CD player or DAC? And not expect it to add "coloration" to the ... 
Sophia Electric Magik Box
I suppose I can find this Sophia Electric Magik Box at a circus sideshow tent? 
Sophia Electric Magik Box
"Transformers made from exotic metals for signal amplification" - just like Vibranium from Wakanda, I suppose? 
Super tweeters, are they worthwile?
Thank you johnsonwu for your astute and correct analysis of the problem!  
Super tweeters, are they worthwile?
The original "super" tweeter was the Janzen D-130. Four electrostatic elements in a horizontally-angled array with built-in crossover. I have a restored pair! Designed by Arthur Janzen to be used atop the AR's and KLH's of the 50's and 60's and im... 
PADIS vs Furutech fuses
+1 select-hifi! Debating the merits of various fuses is MADNESS! Ditto for power cords! Ouch! Who threw that rock! 
You can make boxes, but not electronics? Maybe the 604 is for you ...
+1 for the 604's! 
Super tweeters, are they worthwile?
I recommend a visit to an Audiologist to test your hearing and find out where it drops off! 
Super tweeters, are they worthwile?
There just isn't much above 10kz to be worth bothering with. 
alternative music guitar heroes
Bill Connors of Return To Forever's Hymn Of The Seventh Galaxy!