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Product 483191

Marshall PB100 Power Brake Inductive Speaker Attenuator

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As far as your amp is concerned, the Power Brake is the same as speakers”an active load changing constantly with output level. Hooked up to this, you...Click To Read More About This Product

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Lets you have big tone at any volume!

As far as your amp is concerned, the Power Brake is the same as speakers”an active load changing constantly with output level. Hooked up to this, you can pump authentic cranked stack sound through a single small cab at modest levels. The Marshall Power Brake Attenuator is essential for getting an overdriven tone at reasonable volume on vintage amps without a gain knob, for hard-rock studio work, and great for controlling onstage sound in clubs. Fan cooled, 100W power handling, eleven-step attenuator. 13 lbs.

  • Get a cranked stack sound at any volume with any size amp
  • 100W power handling
  • Fan cooled
  • Eleven-step attenuator

Lets you turn it on without turning up. Order the Power Brake today.


Review Snapshot

by PowerReviews

(based on 8 reviews)

Ratings Distribution

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Reviewed by 8 customers

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(6 of 7 customers found this review helpful)


Works well`

By Dave-RI.1c

from Ohio

The power break does exactly what it's supposed to do. If you don't like the sound of your amp on a power break, then you don't like the sound of your amp. Amps and tubes change in sound as you start to push them. It's not the power break that makes your amp sound different, it's the fact that your listening to your amp "dimmed" at a lower volume that sounds different. You wanted tube breakup...that's why you bought the power break in the first place. Compressed, rolled off treble, increased midrange body and flubbier bass is what most power amp tubes do when pushed. Learn to like it, or don't use a power attenuator to dime your amp. I've been using this thing for ten years on the same amp with no problems. Only issue is that it's too expensive.

(5 of 5 customers found this review helpful)


Big Boy

By big boy-2jcuk

from carolina beach north carolina

I have used many attenuators and this one is it. I use mine through a couple of amps-82 marshall 800-soldano and a Evh 3.It,s a must for the's very heavy duty, a bit pricey but what can you do.Jim Marshall has bills to pay too

(4 of 4 customers found this review helpful)


Does the job

By Laidback Lenny

from Portland, Or

I have an old Plexi that is just too loud for any venue but the largest arenas, so practicing at home is a challenge to the neighborhood. Enter the PB100 - it does just what you need it to do and that is maintain a good sound while not peeling the paint off the houses two blocks away. I dinged the features because I would like to see a 4 ohm loading option. It does suck away some of the tone, but less than the other competitors, and for the reduction in volume it is a necessary (but not dramatic) sacrifice. It is a bit expensive, but it is a high quality, takes the punishment of the nightclubs, piece of gear. I recommend that anyone looking at the market for a piece of gear of this type give a long hard look at this unit.

(2 of 4 customers found this review helpful)


don't waste your time

By lane

from tuckerman, AR

this product does not do what it claims. you will not get a cranked up to 10 sound. the first few steps of attenuation are ok, but anything over 12 o'clock completely destroys the tone. the sound becomes very thin. it sounds like a very quiet volume control across any effects loop. not what i need for this price. if you absolutely have to have a power attenuator, buy a less expensive one.

(1 of 2 customers found this review helpful)


Crank your amp without pissing off the sound tech!

By Gibby

from Nashville, TN

See all my reviews

Prepare to completely rework your tone to adjust to the change in the preamp saturation. But once you've got it... YOU'VE GOT IT! My Marshall JCM has never sounded better than now!It took ten years, but now I've got the last piece of equipment in the rig... for now.I rated the value low because I think the price is way too high.

(1 of 3 customers found this review helpful)



By The Schnells

from Upstate, NY

My Power Brake is out of this world, Crank up the Amp tilt back the Brake. I've owned and played out with this product for a couple of years with great satisfaction.

(1 of 3 customers found this review helpful)



By One amazing guitarist

from cali

This power brake/attenuator made my marshall jcm900 sound kick ass...It has more tone and is way more powerfull sounding....i used to have the THD hot plate but i wasnt geting the tone i was disiering....If you play in a hard rock, metal, or even the cliche screemo/ hardcore band I definitely recommend useing one of these babies...It's totally worth the money....

(1 of 1 customers found this review helpful)


Solid piece that works

By Sorefingers-3eusj

from Austin, TX

See all my reviews

I thought I would try one of these since I am unable to turn my 50 watt head up loud enough to get the Marshall tone I have heard about. I have a JCM2000 DSL that I play through a 1960av cab. Previoulsy I could only stand to turn it up in my shop to around 2 or 3 at best. Now I have it set at around 6 and the change in tone is very evident! Now I hear what people ar talking about when they say a cranked Marshall sounds so good. I followed some advice online and in the manual and made sure to use good speaker cable not guitar cable. I double checked the Ohm settings and set the brake around the midpoint and the volume on my head at around the midpoint and I am very pleased. No apparent loss of tone high or low and now I can sit within reach of the cab and play while getting that driven head tone. I cannot attest yet to durability but it appears built very solid. I have heard many horror stories of burnt transformers/tubes but hopefully that was due to mismatched Ohm settings or use of guitar cables. I would also suspect that some users are just driving the whole works too hard with the brake set for a high reduction and the head turned up too much. Just take it easy with the settings and you should be pleased! I am playing a Fender Buddy Guy Strat that has a midrange boost. I have the dirty channel with gain at about 40%, volume at about 60% on the head and volume at about 70% on the guitar and was playing some Sabbath today that sounded pretty darn close!

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