Lowers the power of the amp and changes 
the tone to a smoother, harmonically rich character

A switch to lower the power of a two power tube, or four power tube amp by switching the power tubes into a different mode - called triode. Lowers power by about 40%. Has a softer tone also. Often confused with Class A. requires drilling a hole. moderate level 50 min

Triode Pentode 1/2 power switch
Am554 amp kit$45.00
amp-model: 
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FREE SHIPPING ON ANY ORDER OVER $60.00 - FREE!  (in the U.S. only

NOTICE - THE  ORANGE DROP CAPACITORS USED IN OUR KITS HAVE BEEN 100% DISCONTINUED BY THE MANFACTURER FOR EVER. THEY WILL NEVER BE MADE IN THE U.S. AGAIN

HIGH QUALITY Mallory Tubular Capacitors will be included in your kit

we apolgize for this, but no one anywhere was warned or informed in any way prior to discontinuance. 

We can install any and all of our kits in our custom workshop - email for info.

Check out Torres Guitars.com our new info site

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We have all the parts and tubes for ALL the mods. check it out 

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Torres Engineering
2500 Alder #226
Milton WA 98354-7001
 Email   amps006@gmail.com