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guya amps!?!?!

Started by freak scene, May 01, 2008, 07:54:46 PM

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freak scene

i have a guya amp, its a head.  it looks sort of like a black faced bassman.  it has reverb and tremolo (trem doesnt seem to work).  the power tubes are el94 (6bq4's i think) and 4 pre amps, 3 12 ax's and 1 6au6 if i remember right.  it hums like a maniac so i am goinng to re do the power filtering.  its a weird amp and i cant find any info on any guya amps, does anyone have any experience with them.  i believe mine is the ga100.  cant be more than 5 watts.  the reverb is cool in a cheesy way.  it breaks up really nice too.

theehman

It's probably just like my Elk Stage Man combo which also uses EL84s and the same preamp tubes.  In appearance it's a pretty good Fender copy, right down to the tiltback legs.  It was made by Miyuki in Japan.
I use mine in my shop for test amp.  I had to replace the power transformer a couple of years ago and recap it, but other than that it's been fine.
Ron Neely II
Electro-Harmonix info: http://electroharmonix.vintageusaguitars.com
Home of RonSound effects: http://www.ronsound.com
fx schematics and repairs

freak scene

el94's on mine.

the guts are a little odd, its like 3 circuit boards all set on standoffs with wires joining them in spots (the wires are falling apart by the way).  the caps and resistors are really strange (atlas ohm i think)  they arent coded, they are army green or grey and they just have the ohmage written on them.  the caps are really strange as well, they look like the mallory mustard plugs in shape, but they are green.  there are also caps that look like the green panasonic ones but the leads are on the opposite corners.  someone has redone the power filter section in the light blue xicons but its really kind of slopped in there.