The world famous bullet proof kit
for amps with two or four power tubes.

Protection for the power amp section of a 20 to 50 Watt (two power tube) or 100 watt (four power tube) amp. Includes transient spike protection, grid current protection, protection against blown speakers, and AC voltage surge protection.

This is a really popular kit and tested for a long time. It increases tube life at least twice as long, and does not change the tone of the amp at all.

We developed this when building custom amps for the Southern California Metal Bands of the the 80's. They were eating up all the good tubes and at the time, there were NO MORE TUBES TO BE HAD! (no Sovtek yet.)

easy installation 35 min

50 or 100 Watt Bullet Proof Kit
BP100AK amp kit$29.95
amp model: 
final notes on web page

Dan's Legendary Book "Inside Tube Amps" is now available on Amazon/Kindle

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Torres Engineering

Sandpiper Drive

Yuba City CA 95993

this is not a "walk in" shop

I am Partially retired due to illness, but getting better!

in business 48 years