OT: Tube Audio

[Scott Stevens]

On Thu, 20 Oct 2005 07:57:58 -0400
Allison <ajp166 at bellatlantic.net> wrote:

> >
> >Subject: Re: OT: Tube Audio
> >   From: "Chuck Guzis" <cclist at sydex.com>
> >   Date: Wed, 19 Oct 2005 23:08:47 -0700
> >     To: cctalk at classiccmp.org
> >
> >On 10/19/2005 at 10:19 PM Zane H. Healy wrote:
> >
> >>OK, since there seem to be a fair amount of people into Tube audio, 
> >>or at least with a knowledge of it.  Would someone care to explain 
> >>the following to someone that is used to an all in one unit such as a 
> >>Sony Receiver.  What is the purpose of separate Amp and Pre-Amps.  I 
> >>think I understand the whole phono pre-stage, but I've yet to find a 
> >>decent explanation of the rest, and I'm looking to switch to tubes 
> >>for playback of records (primarily Vinyl, but I'm also interested in 
> >>78's).
> >
> >Purely from memory, but I believe one generally used a separate pre-amp
> >mostly due to hum issues.  The power supply for the preamp could make use
> >of lower plate voltages, better regulation and DC heater supplies.
> >
> >Or so I think I recall.
> >
> >Cheers,
> >Chuck
> >
> 
> No.  Gads, creating answers revisionistically. Rare back then was a preamp 
> with DC heaters.  Besides without the oxygen free stabilized cables how 
> could you appreciate it. ;)
> 
My Dynaco preamp is from the early 60's and has a filtered DC power supply section for the heater filaments.


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