Tuner pedal q : (Andi?)

[timmyo]

My Korg DT-10 is a lovely tuner pedal and does it's job well.

That said sometimes when tuning (and the output is supposedly muted) as the LEDs flicker there is noise - not really loud, but enough to notice. As much as I can grasp about electrickery is that ideally the output would get grounded, not just muted - is this likely to be the cause and is it the sort of thing that soldering something somewhere might rectify, or should I just lump it ?

[Sporky_McGuffin]

I'd say the simplest solution would be a teeny little AB box. Stick the tuner on one output and the rest of your signal chain on the other - proper silent tuning and the tuner isn't in the signal chain the rest of the time.

[timmyo]

I'd say the simplest solution would be a teeny little AB box. Stick the tuner on one output and the rest of your signal chain on the other - proper silent tuning and the tuner isn't in the signal chain the rest of the time.

The tuner is my buffer.

[Sporky_McGuffin]

Then get a proper AB box with a proper buffer in it.

As for the noise, I don't know what's going on inside. It could be bad power supply decoupling and hash noise from the diodes getting into the signal line that way. Possibly.

[timmyo]

Then get a proper AB box with a proper buffer in it.

As for the noise, I don't know what's going on inside. It could be bad power supply decoupling and hash noise from the diodes getting into the signal line that way. Possibly.

Fairy nuff. I just thought there may be a "ooh the old <insert thing> thing - simply do this" answer but clearly not as straightforward as that. I can live with it - it's probably only audible to me standing by the amp

[Sporky_McGuffin]

Nah - I can't think of a quick-fix I'm afraid. You could try running it on its own power supply or from batteries to see if that gets rid of it?

[timmyo]

Is there a 'Pacifica' of pedalboard buffers ?

[imported_Dannyboy]

Is there a 'Pacifica' of pedalboard buffers ?

A Boss pedal perhaps ? Or build a Zvex SHO clone for £20 and set it for unity gain.

[timmyo]

Andi (or anyone else) :

if I wanted to put a little buffer in a teeny box - just and in, out and a 9v jack (no battery) would something like this suffice

An opamp is an even better buffer amplifier, though many believe they are somewhat colder sounding and more sterile than the transistor versions. The opamp gain is exactly unity and the output impedance is quite low; typically measured in tens of ohms instead of hundreds as with the transistors. It also has the lowest parts count of any of the simple buffers presented here.

from here : http://www.muzique.com/lab/buffers.htm

[imported_Dannyboy]

Not a design I would use Tim, there are better unity gain op amp circuits available. Even easier to use just a transistor. If you're interested I'm building a few boosters at the moment for some local musicians could add you to the list ?