Harley Benton PA-100 Power Attenuator

Power Attenuator

  • Useful tool for rehearsal room, live and recording applocations
  • Tube amplifiers as they sound best - high output level with reduced and controlled volume
  • Can also be used as a dummy load
  • Input power up to 100W
  • LED with overload indicator
  • Quiet fan
  • Controls: Speaker Level and Line Level
  • Inputs: 4/8/16 Ohm
  • Balanced speaker output
  • XLR DI output with speaker simulation
  • Dimensions: 19 x 14 x 11 cm
  • Weight: 1.5 kg

Further Information

Impedance 4, 8, 16
Noise Supression No
DI Interface Yes
Speaker Simulation Yes
Dummy Load (usable without cabinet) Yes

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Our most popular Guitar Amp Attenuators
285 Customer Ratings
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4.3 /5
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features
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quality
Alone and with Helix
Boddumblues, 05.03.2018
I got this unit and hoped it would work for me, and it does.
I wanted the mic sim and line out to be before the the dampening,
and thankfully it was easy to convert it to this.
I did not want the line out and mic sim to follow the dampening.
I added a 25 k pot on the mic sim out to add more control. Now I use it with my Marshall 6100 head and a VOX AC-10 (with a speaker in mod), and am quite pleased. I do find that mic micsim signal kind of collapses. But when using the linesignal through a Behringer Ultra-G Di. box I have a beautiful full signal. Of course it would be nice to have the micsim do it, but the Behringer just sounds better in every way. For the price of the PA-100 and the Ultra-G and my mods, you have a package that is hard to beat. ;-)
I do run presence on 100% on the 6100, and raise the treble on the AC-10 but it's fine.

What this unit allows for also, is use of the lineout in different ways;
1: Load your amp into a Helix.
I have patches in my Helix based on a VOX AC-15, but if I want to have my real AC-10 replacing the modelling amp, i can patch it in via one of the loops (line level) and it works like a charm.
I hear my amp in real life, the FOH gets a lineout from the Helix with the real amp through the Helix, and then I play with IR's, mainly Celestion Blues and Golds - sweet!
2: Lineout + IR's
The lineout without the micmod can have IR's added (Moer Radar etc.) to add flexibility and quality to the sound. Even using my Digitech RP-155 just as a cabinet simulator opens up a lot of sounds.
So there are a lot of sounds waiting to be heard.
Also in a DAW. Cheers ;-)
03-07-2018 Update
I tested running a JOYO JDI-01 from the line out, and man what a difference to the mic-mod out it is, it really works now, the cab sim on the JOYO is sooo much better in fidelity, the AC-10 really shines through the mixer now. It also beats the Behringer in clarity (the Behringer only has 1 cab sim, a 4x12, the JOYO has a 2x12 combo sim and a 4x 12 sim), I am very very pleased with this new dicovery!
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Total
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Attenuates more than the volume
sixstringslinger, 08.08.2020
For the price I wasn't looking for an amazing sounding attenuator, but I was pleasantly surprised.

Starting with the Pros:
- Inexpensive,
- Not impedance specific as other models are. The attenuator has 4, 8 & 16 ohm inputs.
- Sounds good

Cons:
- It attenuates the lows of an amp quite a bit, which could be a good thing if you have an overly boomy amplifier.
- It is a little brighter than the unattenuated sound of the amplifier.
- When the attenuator is turned all the way up, it's not nearly as loud as the unattenuated volume and there is no bypass switch to switch to full output.

I have not used and don't foresee a need for me to use the direct out option so I cannot attest to the effectiveness or sound quality of that part of the device.

All in all, It's a great solution to bring the volume of your amp down to bedroom volumes for practice, but I'm still on the fence as to whether or not this attenuator is gigable.
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Unbelievable value for money
Callum Hitchen, 26.11.2020
I searched high and low for a good attenuator, but most places charged £100+, when i saw the reviews of the Harley Benton one for the price i thought, might as well give it a try, so glad i did, brilliant piece of kit for the money!
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Works Great
MyKill, 17.02.2021
I was super concerned with an attenuator/load for such an inexpensive price. My main amp is a 50watt Hand built Plexi from RocketRetro (Kevin is amazing).
Being that this is my main amp I literally tried this on all my amps before the Plexi, working my way up from a 5 watt tube amp, to a 40 watt Fender, my 60watt Marshall combo and finally my plexi. I figured if I was going to blow something up I didnt want it to be my dream amp.

I run my Plexi on about 7 jumped channels. I have a PPIMV installed so my master is about 1/2. I can turn the attenuator down to whisper quiet and it sounds great. All attenuators affect the high end but your amp has dials, USE THEM.

It's a 100 watt attenuator. I think if you're running a 100 watt head into this I would opt for something rated higher. The rule is usually double the amp output. Especially because the transients in a tube amp can easily exceed the power rating of your amp. I have no concerns with my 50 watt head

Pros
-Build quality is great. I couldn't but the parts for this at this price point.
-Works with 4/8/16 ohm taps from you amplifier ensuring compatibility with just about everything.
1/4" line out works great for recording.
-Seemed to be exactly the same as the jet city "jettenuator" whic is about $100 USD more.
-Silent recording works well so follow the instructions. You have to disconnect you cab and turn the power down to 9:00 for the line out to get enough signal.


Cons
-XLR out was completely unusable for my needs. I believe it must have some sort of Cab Emulation EQ circuit because the sound is completely different than the 1/4" out.
-XLR is unbalanced? I cant figure this out. Why would you have an unbalanced circuit when the main purpose of an XLR is direct recording or Str8 into a console?
- I was sometimes getting a weird hi frequency "whine" it hasn't happened in a while but when I pulled the 1/4" out slightly it was perfect. I haven't noticed the issue lately.
-Silent recording is only available when you pull the cable going to you cabinet. It's a load box as well and its not that big of a deal. I do wish there was some sort of bypass but with it hooked to a cabinet that's not as simple as it seems. I would never place a toggle switch between my head and my can, so I suspect they designed this unit for the same reason.
-3dB drop as soon as its placed in the circuit. Again this is probably like the bypass feature. It can be done on more expensive units but people get an attenuator to reduce the dB in the first place. Not a concern for me but I thought it should be mentioned.
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