Mythos - Golden Fleece

Jaysneezy · Post by **Jaysneezy** » 27 Jan 2018, 18:21

Hello, I’m trying to figure out what the hell this thing is. Here’s the description from the website:

“The Golden Fleece an incredibly simple circuit that skirts the line between overdrive and fuzz.

Based on a much talked about pedal used by Wilco's Nels Cline this simple one knob unit lives in your guitars volume and tone controls. The Golden Fleece cleans up better than almost any other fuzz out there and the single knob on the unit is a master volume control. The unit has a very balanced tone that doesn't shift your guitars sound just offers a biting, yet full sound that would work for a variety of musical styles.

Incredible full fuzz tone
Responses to your guitar volume & tone controls.
Single transistor with hand selected clipping diodes
Single volume control on unit
Quality through hole components
True Bypass switching”

So I’ve found this gutshotfrom an old reverb listing of the proto of the latest version:

: Mythos Golden Fleece gut shot; kjhmqhdqe7y8snrd2q9s.jpg (129.31 KiB) Viewed 690 times

I’ve also found on a video comment somewhere someone claimed the transistor is a 2n5088. So my question is, does anyone recognize the circuit at all or have any other guess as to what it is?

dv8r601 · Post by **dv8r601** » 27 Jan 2018, 21:04

Electra derivative. See : 99% of lovepedal designs

felixvaughn · Post by **felixvaughn** » 09 Mar 2018, 22:54

I'm pretty new at this but I have been looking at the electra a little bit. I have looked at this photo and I have some questions, I don't see a pulldown resistor in this photo and I think the top resistor is for the led, (512R?) that leaves 4 resistors. In electra based circuits there are usually only three resistors. One between the voltage to the collector, one between collector and base and one from the emitter to ground. What would the 4th one be for? Could it possibly be used in series with another resistor?

Here are some of my guesses, what do you guys think?

The input and output capacitors look the same size and are often 100n in electra based circuits, so I'm going to go with that.

The resistor from the voltage to collector 47k

Between the collector and base 2m2

From the emitter to ground 680R

Asymmetrical diode clipping with one germanium and one silicon.

This leaves what I think is a 47k resistor unaccounted for.

Nocentelli · Post by **Nocentelli** » 10 Mar 2018, 21:43

I'm going to guess it uses the other 47k resistor as a pull down from the way it is so close to the input cap at one end and appears to be connected to the black ground wire at the other end: Much lower value than usual, and does horrible things to the input impedance but might well improve the clean-up (useful since it has no gain control)

p.eat · Post by **p.eat** » 11 Mar 2018, 17:18

I remember reading somewhere wht the pedal is based on, but I can't recall what it was.

Also if you check out the Mythos Instagramm-Account there is a partial pic of the schematic.
If I find out what I forgot I'll get back....

p.eat · Post by **p.eat** » 11 Mar 2018, 19:36

Found it: suposedly it's based in a Alan Yee fuzzy nuts.

felixvaughn · Post by **felixvaughn** » 23 Mar 2018, 20:52

I did some digging on the Mythos pedals Instagram, I thought these photos might be of some help.

A close up of another prototype or from very early in commercial production.

Pcb version boxed up.

Comparison between pcb versions. Newer version is on the left.

: Screenshot from 2018-03-24 14-11-46.png (461.15 KiB) Viewed 642 times

Unpopulated new pcb.

felixvaughn · Post by **felixvaughn** » 23 Mar 2018, 20:53

This is a close up of the schematic for the Alan Yee Fuzzy Nuts.

SpencerPedals · Post by **SpencerPedals** » 24 Mar 2018, 03:49

felixvaughn wrote:This is a close up of the schematic for the Alan Yee Fuzzy Nuts.

[ Image ]

I think we need more zoom to get to the bottom of this. A closer close-up. Something that will tell us what the machine that made the paper that the schematic was written upon, based on the fiber layout...

soulsonic · Post by **soulsonic** » 29 Apr 2018, 07:24

disgusting

teddeeh · Post by **teddeeh** » 27 May 2019, 22:31

Its an electra with different values.

sergedeep · Post by **sergedeep** » 02 Feb 2022, 12:35

I really like my Mythos Golden Fleece and have just discovered that the Mythos High Road is exactly the same circuit, only with Bat41 diodes. So I'll give those a try as well. The Mythos Au79 also seems to be the based on the Golden Fleece, but with different values and a different diode pair. Anyone have more info on that one?