Re: Do low mu tubes make better line stages?


Paul D. Spiegel wrote:
<<snip>>
>
> With the standard CD output voltage at 2vrms, not much gain (if any) is
> required to drive most amps. The line stage then is mostly helpful as a
> buffer to provide a high input impedence to the source component and a
> low output impedence to drive the cable and power amp.

What about the cable from the CD player to the preamp? IS the input
impedance to the preamp different from the input impedance of the power
amp itself? How do you know? Have you _measured_ it, and how?

Many people say, "You have to have a preamp, because running direct
sounds thin. The preamp fattens it up." MAYBE the "thinner" sound is
the correct sound and "fattening it up" is just adding distortion and
jacking the noise floor up.

A two box solution is always going to be better than a three box
solution if each box has its own power supply and interconects. Very
especially if those are long interconnects with RCA ends. Actually a
properly designed one box solution, or a two box where one is the power
supply, COULD be better-CD drives are quiet and can be well isolated.

I add that because sure enough that would be the smart ass retort.

Without a careful test methodology you don't know.

.

Relevant Pages

  • Re: Tube recommendation for JCM-800 / Dr Z Airbrake question
    ... a couple preamp and one power tube got damaged. ... so I never got to hear the amp prior to the tubes ... Under the BEST of circumstances, the attenuator will act like a speaker, only wasting some of the power that would otherwise be fed to the speakers. ...
    (alt.guitar.amps)
  • Re: Preamps, tubes, valves ..... wtf!
    ... What does a preamp do without a cabinet? ... power that it can give to the cabinet? ... However an amp can be 120 watts ... Tubes are used as components of preamps and power amps. ...
    (alt.guitar.amps)
  • Re: Magic moments
    ... a tube amp can't do its best at normal home practice volumes (unless you ... You have to get the power tube cookin' ... I'd never be happy if somebody pulled the tube preamp out of my Marshall JMP 2204 or my Mesa Mark III and replaced them with SS. ...
    (alt.guitar.beginner)
  • Re: Preamps, tubes, valves ..... wtf!
    ... What does a preamp do without a cabinet? ... power that it can give to the cabinet? ... However an amp can be 120 watts ... Tubes are used as components of preamps and power amps. ...
    (alt.guitar.amps)
  • Re: Preamps, tubes, valves ..... wtf!
    ... What does a preamp do without a cabinet? ... power that it can give to the cabinet? ... However an amp can be 120 watts ... Tubes are used as components of preamps and power amps. ...
    (alt.guitar.amps)