[ARC5] Somebody is Still Building 832's?

[Dennis Monticelli]

A colleague and I did an armchair analysis of the 832 in the stereo
headphone driver product.  The ridiculously low plate voltage (12V)
translates into very low though measurable gain with a high output Z.  Gain
is not really necessary for this application but driving 32 ohms is.  The
circuit also uses a venerable op amp with 600 driving capability.  So the
circuit is probably using the 832 for the glowing input stage and the op
amp for the driver (after taking a loss via a series output resistor to
avoid driving the op amp into current limit).

Nobsound makes other great stocking-stuffer audio tube products.  You KNOW
you WANT one so you can plug in a real NOS 832 for audiophool bragging
rights!

Get yours today!!

https://www.amazon.com/Nobsound-Little-Vacuum-Headphone-Amplifier/dp/B07R7PL7YM

Dennis AE6C

On Wed, Mar 3, 2021 at 5:22 AM Doran Platt <jeepp at comcast.net> wrote:

> I see these tubes for less than $15 each.  Maybe the word is not out to
> the (with all due respect) Audio Gnomes, yet.
> K3HVG
>
> >
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