What sort of pickup have you on your guitar?

If you put the boost in front of the peal then it will affect the tones the pedal will produce. If the boost is after the pedal the tones produced by the pedal will be increased in volume but the tones will not be affected.

The best way to get more gain without affecting the sound would to put a linear booster in line after the pedal.

You can always make your own using toner transfer - if you have a laser printer.

Yes thats right. Probably they started to appear about 1955 or 1957. There was also a blue spot transistor with higher frequency range up to about 1.5MHz. Red spots were approximately equivalent to Mullard OC71.

To my recollection - I'm 79, in the early days in the absence of a type number, a white dot donated an RF transistor - suitable for medium wave radios - and a red dot meant it was suitable for audio frequencies. These were usually rejects from the manufacturers and sold for hobbyists. In all cases ...

There was a hiccup recently when some items I ordered were sent back to sender - supposedly because of deleys at the distribution hub so I had to reorder. These seem to be on route satisfactorily. The delay happened just after the Microsoft debacle suspicious maybe?

In general good. A couple of times I have had fake/used components but Ali refunded me without question. Lately I've not had to wait so long.

Can you see a glow from the heaters?

A true Rangemaster is not a distortion device but a treble booster. The output should not be distorted.

Ground

Thanks mate

Not only have you got a treble booster you have got the MoJo of a Germanium treble booster

The circuit around the second op amp is just a Baxandal feedback tone control and is correct.

All the pictures I've seen of the Intersil/Renesas device shows an indent in the package next to pin one.

Any sound samples?

I'd like to know how you picked it up for for almost nuthin

What sort of heatsink is on that TDA7379 I wonder.

You could have fake J201s. They are not being made any more. You really need some test equipment if you are going to DIY and a multimeter is essential.

Old Magazines also here https://worldradiohistory.com/index.htm