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ieales

Responses from ieales

Expanding questions about tubes in a preamp
@insearchofprat:Why change the EF86?Unless the unit has been left on continuously for 10 years, the tube should have plenty of life.Putting back 12AU7 will reduce gain about 6db. Hum could be failing PS in the Wolze.How is the Wolze interfaced to... 
Expanding questions about tubes in a preamp
Hum is either a design or installation fault.Hiss is a gain structure fault.Microphonics are a tube fault.IMO, chassis damping has more effect than tube dampers.I first used VPI blocks on my Citation II in the late 70’s/early 80’s, whenever they b... 
Affordable US Made Tube Pre/Power or Integrated Options
Aric, I have no problem hearing the difference. I do agree that power supplies have a tremendous affect on the sound. I do have issues with ascribing sonics to the wrong attributes.Tell me, what is the phase response of the the neon tube?Some c... 
Affordable US Made Tube Pre/Power or Integrated Options
A tube rectifier is smoother than diodes as there’s no diode switching occurring Aric, please provide measurements that show SS diode noise in a tube amplifier output. Tube rectifiers have a sound that some enjoy. Others think it mushy. Diode sw... 
Affordable US Made Tube Pre/Power or Integrated Options
PrimaLuna and many other Chinese made are sans pareil. Support is superb.Tubes4HiFi, for one, are American made of crap Chinese parts and an utter joke wrt assembly. Support? meh.A great many tube amp claims are as lunatic as cables: Lots of verbi... 
Affordable US Made Tube Pre/Power or Integrated Options
I’d avoid the Tubes4HiFi/VTA like CoViD-19.Tubes4HiFi/VTA products are poorly designed to be as cheap as possible. I bought a factory built pair of the M-125 monoblocks. Factory built, the absolute worst assembly of any tube amp owned in over 50 ... 
Why no Virtual System pics??
Added https://systems.audiogon.com/systems/8735  
Who thinks $5K speaker cable really better than generic 14AWG cable?
^^^Did you re-plug any interconnects while changing the power cables?What was the A/C power condition?Did you re-plug the old ones  B E F O R E  changing. If not, then it is quite possible that better contact accounted for the delta.Lack of Rigor ... 
Why do you think Bi-Wiring improves the sound ?
^^^ Did you measure the frequency response pre / post? 
Why do you think Bi-Wiring improves the sound ?
mirolab:What amplifiers, cables, connectors, etc. for single and bi-wire?Speakers are 'voiced' to the room and equipment the designer has.They sound different everywhere else. 
Why do you think Bi-Wiring improves the sound ?
Maybe getting higher quality jumpers rather than using the typically crappy factory ones would be a factor too. Definitely for the high quality jumper vendor. He'd have your money. I should have asked if bi-cabling or 2 seperate runs of cable ... 
Why do you think Bi-Wiring improves the sound ?
Considering that the feedback changes the effect of this resistor and makes it approach 0 .... ... and the load changes the feedback. Historically this was never provided for bi-wiring, it was provided for Bi-Amping to reduce IM distortion and... 
Why do you think Bi-Wiring improves the sound ?
Hint, is the emitter resistor in the feedback or not? Irrelevant in the models which show that changing 1 parameter affects response. 
Why do you think Bi-Wiring improves the sound ?
^^^^ typical post of someone reading the title and inserting their 0¢.'Good' speaker wire is meaningless. The cable is part of a system and $$$ is often sonically and measurably worse than ¢¢¢.If you want to know, there are plenty of well written ... 
Why do you think Bi-Wiring improves the sound ?
@vair68robertSee http://www.ielogical.com/Audio/CableSnakeOil.php. Jump down to Bi-Wiring if you don’t want to read the whole screed.Bi-Wiring is provable and measurable. Audible depends on myriad factors. Too many with zero technical skill or tra...