Zeus Audio Systems - Model 8444 Pre-Amp

Dr Tony Balls · Post by **Dr Tony Balls** » 01 Dec 2015, 19:39

Had one of these obscure little buggers come across my bench recently so I thought id trace it. Its not exactly remarkable but does sound good. The original switching is garbage which is why ive highlighted to remove it.

snofla1900 · Post by **snofla1900** » 02 Dec 2015, 09:23

Was it used in a HiFi sytem Tony?

bajaman · Post by **bajaman** » 02 Dec 2015, 10:08

snofla1900 · Post by **snofla1900** » 02 Dec 2015, 15:32

What , because of the 741 ??

The title of the contraption is quite pretentious.

Dr Tony Balls · Post by **Dr Tony Balls** » 02 Dec 2015, 15:44

Dunno what it was used in originally, but the current user has it for guitar. The documentation for it said it could be used for a variety of uses including recording, hifi, guitar, etc. Some quick research tells me that this company was around in the early 80s, and for a bit used by Randy Rhodes and Rudy Sarzo. Anyway I just figured if I cant find a schematic, then maybe it hasnt been traced. So I drew one up.

The Rotagilla · Post by **The Rotagilla** » 12 Dec 2015, 18:01

Seeing this got me curious about the Zeus Overdrive pedal again so I tracked one down. Modified Distortion+ with a crude tone control, there's your Randy Rhodes connection.

Agent86 · Post by **Agent86** » 01 Jan 2016, 13:57

R1 is 5k6.

Missing resistor from 741 minus input.

indyguitarist · Post by **indyguitarist** » 12 Jul 2022, 19:11

sorry for the necropost, but did anyone save this schematic? Blake from The tone mob podcast looking for one to modify his.

Dr Tony Balls · Post by **Dr Tony Balls** » 13 Jul 2022, 13:28

I can't edit the original post, it seems, so here are the images from it:

indyguitarist · Post by **indyguitarist** » 13 Jul 2022, 22:42

Dr Tony Balls wrote: ↑13 Jul 2022, 13:28 I can't edit the original post, it seems, so here are the images from it:

Much appreciated!

Zeus Audio Systems - Model 8444 Pre-Amp [schematic]