8)
Sounds like what I was offering to help your figure out ....You were on a heavily used circuit that created DIRTY NOISE within the circuit you were plugged into.
The BEST WAY to fix that permanently is to run two designated circuits one for your amp and one for your 9 volt source.
Just wanted to mentioned this can hard if you're in an apartment block for example and you don't know the state of the building wiring. Say you have an air con unit on and that and everything else comes off one small ring. That is inviting noise. Some places are just prone to having noisy mains. Circuits with motors attached to them are the worst. Staying away from PC's is a good bet too.
The also sell niose reduction applications but they are basically censoring the noise NOT eliminating it
You could use something like an ICP decimater to gate out your guitar when you're not playing. Or something similar. But if it sounds good now then I wouldn't worry.
If ya want to really bring out your tone to where you can do TONE SWIRLS replace that cheap .022mf plastic capacitor with a.044 mf ORANGE DROP, VITAMIN Q, GREY TIGER, or BUMBLE BEE and your tone will be 10 times better !!!!
He already has Orange Drops in the guitar, and the cheaper ones are usually Ceramic Disc. What is a Tone Swirl?
If you have a drop off in yur mids and highs when you lower your Volume you can out a very inexpensive (1-2 bucks) treble bleeder in and it holds mids n highs and let;s them disepate slowly and evenly...making you tone more even and have it fade equally.
I tried this once and didn't like it. the treble bleed mod is this (below)... It works because the cap and resistor work as an RC Filter. Letting frequencies above a certain point bypass the volume pot. VERY similar to a bright cap you might find on an amps gain control.
The trouble is, with anything like a bright cap done in this way, the effect is dependent on exactly where your volume control is set. this is also true on an amp, bright caps don't work all the time because the resistive value in the RC Filter changes as you move the dial, thus changing the frequency response of the circuit. In the picture below. The cap is letting high frequencies bypass the pot, and the resistor in parallel with the pot (input and output) is effecting the value of the pot seen by the signal. So if you had your pot was turned to have a value of 100K, the total resistance seen by the input would be 50K. If your pot was on 500K, total resistance would be 83.333K
I found that it just made rolling off volume create a tone that was too bright from my guitar.
