yes

"Guys, can someone explain to me what is the need for multiple gain stages?"
answer: read the first post in this thread

try inserting a 100 ohm resistor in series with the output from the charge pump to the opamp pin 7, and then connect a 220uf (at least 35v) capacitor from pin 7 to ground
cheers
bajaman

anyone tried my SUGGESTION yet ?

"Here’s some one that has done a proper blind test on tone controls

https://youtu.be/817JHiYV_Po"

totally irrelevant to this thread

Please read the first line of my original post and contemplate why I was reticent to share my subjective observations - as Thomas said to Jesus "show me the holes - i want proof"
None so blind as those who will not see, and none so deaf as those who will not hear
cheers
bajaman

Has anyone actually tried my suggestion yet ? I would very much like to hear from you. As I previously stated - I am not interested in proof, recordings measurements etc. If you decide to ACTUALLY TRY my suggestion (with a clean not over distorted signal) then I would be very pleased to hear your th...

Yesterday I had two Fender amplifiers in the workshop - a Hot Rod Deluxe and a Hot Rod Deville. I changed the first 22n capacitor after the input stage in both amps - used a TAD 22n mustard and the results were not subtle - I had the customer watching me for the Deville - first i played my strat int...

you are doing something wrong if it distorts

It sounds like the buzz noise is from single coil unshielded pickups - otherwise it sounds great
cheers
bajaman

Also, if you can hear it, then you can definitely measure it. So swapping caps and doing some frequency spectrum analysis should clearly show up differences. Please feel free to do so with the suggested 22n TAD mustard capacitor versus a generic reddish brown chinese 22n 630v polyfilm capacitor wit...

I just listened to the video. I could hear differences between the different caps, though they were subtle. Well - i could not hear any difference at all because they all sounded distorted :lol: Perhaps if he had compared any cheap Chinese 630v polyester capacitor with the SPECIFIC Tube Amp Doctor ...

I'm not saying you are, but they exist.

yes - agree - we do exist.

completely missing the point - but hey, that is exactly what i expected, so more fool me for actually suggesting it - just by chance has anyone tried using a philips or mullard mustard capacitor OR a TAD mustard capacitor ?
AND - try using a CLEAN tone not distortion
cheers
bajaman

yes - i have heard good reports about those sozo capacitors as well. I will order a few and give them a try too. no need to go crazy replacing all the coupling capacitors though, as in my experience it is that first coupling capacitor after the input tube that makes the most difference to the "sound...

From a guy with a lot of experience and substantial contributions, too. Part of me hopes it's a misscheduled April Fools joke and is still waiting for the punchline. Please read my first post again :wink: then you will understand why I was reticent to post ! All I am asking is that you give my idea...

Edit : in a Deluxe reverb - like amp, would you then change the first coupling cap after the second half of the first 12AX7 (the post EQ one)?

In a 65 Deluxe Reverb, I would suggest changing both C5 and C12.
cheers
bajaman

Hi folks Every now and then, one has an "eureka" moment that one feels like sharing, but sometimes the fear of being severely "flamed" forces one to keep it to oneself. After servicing tube guitar amplifiers for close on 40 years, I have decided to share a very simple component change that I discove...

reposting these files because they appear to be missing from page 12 of this thread cheers
bajaman

How can IC3a and 3b be different devices ?
How can IC2a and 2b be different devices ?
There are two IC2 shown - one of them must be IC1 perhaps ?

bajaman