[Harp-L] kfk-1

["John F. Potts" <hvyj@xxxxxxx>]

Leo,

Excellent device. When I had a Blues Jr. I used to use the less  
expensive MXR 10 band EQ which is the same thing as the KFK-1 except  
it's mono and is AC powered only (the KFK is stereo and can use  
batteries). The freqs available for adjustment on these boxes are  
useful and harmonica friendly. Besides controlling the feed back  
freqs, you can pump 250k to fatten the tone of an amplified harp.

But, on these boxes, the most useful feature to control feedback are  
the gain and volume sliders which act like pre and post controls on a  
preamp.  Using them enables you to reduce the gain of the input  
signal coming from the mic which is a pretty reliable method of  
controlling feedback.  Also how you adjust the gain and volume  
sliders in relation to each other helps you shape the tone to get the  
type of tonal quality you want.  The gain and volume sliders are  
perhaps the most useful feature, but being able to notch down 1K and  
2K and boost 250k is pretty helpful, too.  Of course the other freqs  
can also be tweaked.

Very useful and harmonica friendly device.

Btw, leaving the FAT switch OFF on the BJ is a good idea.  Turning it  
on may sound good in your living room, but in a perfromance seting,  
leaving the FAT switch on is a prescription for feedback. The BJ is a  
high gain amp anyway. FWIW.