This is a thread we should have - ask your embarrassing pedal questions here

Knox in Box said:
I see, Zen drive is based on the tube screamer circuit but is lower drive, thicker sounding with a tone and a pre drive mid presence control. Sounds very amp like on its own and I used it as a fender like always on preamp in front of my kustom with great results for a while. I like a good DOD 250, so thanks for the info.
Click to expand...

I really wouldn't consider the Zen Drive similar to a Tube Screamer as the Zen uses FET transistors and asymetrical clipping where as Tube Screamer just use diode clipping.

zendrive-jpg.14415


Someone might argue that the configuration is similar but it is characteristically different. FET's are the closest thing to emulating a tube in the solid state world and diodes are just there to clip the peaks of the AC waveform.

The Timmy however is closest to Tubescreamer of the 3 pedals mentioned. Really just a modded Tubescreamer.

JANRAY%2BANALYSIS%2BCoda%2BEffects.gif


Meanwhile the DOD 250 is very similar to an MXR Distortion with a few component changes.

DOD250Schematic.jpg


MXR Distortion +

StreamImage.aspx



FWIW - Use what sounds good to you. All of the circuits are built off of variations of a basic op amp design.
 
Modern Saint said:
I really wouldn't consider the Zen Drive similar to a Tube Screamer as the Zen uses FET transistors and asymetrical clipping where as Tube Screamer just use diode clipping.

zendrive-jpg.14415


Someone might argue that the configuration is similar but it is characteristically different. FET's are the closest thing to emulating a tube in the solid state world and diodes are just there to clip the peaks of the AC waveform.

The Timmy however is closest to Tubescreamer of the 3 pedals mentioned. Really just a modded Tubescreamer.

JANRAY%2BANALYSIS%2BCoda%2BEffects.gif


Meanwhile the DOD 250 is very similar to an MXR Distortion with a few component changes.

DOD250Schematic.jpg


MXR Distortion +

StreamImage.aspx



FWIW - Use what sounds good to you. All of the circuits are built off of variations of a basic op amp design.
Click to expand...

The Timmy sounds like a modded DOD 250. It definitely doesn't sound like a tubescreamer.

The 250 and the D+ are the same circuit. The 250 uses silicon transistors and the D+ is germanium.
 
Which brings up the question, would you prefer FET or Germanium for a rat clone? I'm asking for a friend.
 
Modern Saint said:
I really wouldn't consider the Zen Drive similar to a Tube Screamer as the Zen uses FET transistors and asymetrical clipping where as Tube Screamer just use diode clipping.

zendrive-jpg.14415


Someone might argue that the configuration is similar but it is characteristically different. FET's are the closest thing to emulating a tube in the solid state world and diodes are just there to clip the peaks of the AC waveform.

The Timmy however is closest to Tubescreamer of the 3 pedals mentioned. Really just a modded Tubescreamer.

JANRAY%2BANALYSIS%2BCoda%2BEffects.gif


Meanwhile the DOD 250 is very similar to an MXR Distortion with a few component changes.

DOD250Schematic.jpg


MXR Distortion +

StreamImage.aspx



FWIW - Use what sounds good to you. All of the circuits are built off of variations of a basic op amp design.
Click to expand...
Thanks, I was just going with what I had heard somewhere else. Explains why they never sounded anywhere near the same to me.
 
Help!I'maRock! said:
The Timmy sounds like a modded DOD 250. It definitely doesn't sound like a tubescreamer.

The 250 and the D+ are the same circuit. The 250 uses silicon transistors and the D+ is germanium.
Click to expand...

Sound vs does not define the pedal. In regards to the 250 vs. D+, exactly but the circuit is essentially the same.

FWIW, a Zen Drive does not sound like a Tube Screamer.
 
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