Harley Benton GPA-400
19 "Guitar Power Amplifier

Latest User Reviews
Does the job
Surprised how good this sounds for a budget brand. Well placed my rack pre amp. Nice ðð»
Amazing for the price
I've been using this amp for a few months now, pairing it with an amp modeler and sending the signal through a 4x12 cab. If you want to, it can get incredibly loud. It certainly is loud enough for any live application. Now I've started splitting my signal into two cabs for my side project, also great. The EQ is also great for fine-tuning your signal as a basic post-EQ. Very handy. It doesn't give off too much heat and is easily transported thanks to its thin shape. I don't think I'll need a new power amp any time soon. My only little gripe with this thing is the knobs feel a little cheap. They work fine, they haven't broken or anything, it's just they could be nicer. But overall, worth every cent.
Excellent product
Loud and clear. Its one drawback is its quite heavy.
Great but change the knobs
Awesome rack power amp especially for the money, more power than you should ever need and much lighter than most others with only half the power
Only criticism is the cheap chrome knobs make the whole unit look cheap and nasty, I swapped them for some basic black control knobs and improved the look dramatically
Cheap but incredible!
I was very hesitant on buying as it was a cheaper alternative, but I’ve had it for months now and it’s perfect! It’s used to power my Kemper Profiler and honestly I can say I will never be without it! Sounds and works just as it should, if you’re more on a budget then definitely buy this!
Don't overspend on a power amp for your Kemper when you can buy this!
In my Thrash Metal band, Blacklist, I use the Kemper Rack Profiler (unpowered) and send it straight to the FOH, so do not need the power from a Power Amp unless I am unable to go to the FOH. I bought this Power Amp to go in my rack unit with the Kemper and it works amazingly and is SUPER loud!
Do not over spend on a Power Amp, this is worth it's money tenfold.
Amazing for Compact rigs.
Super clean and transparent power amp. I pair this with an amp modeller. Can drive 4 cabs. In one of my bands, me and the other guitarist both connect our modelling preamps to this and drive a cab each. Its fantastic value for money. Fits in my backpack.
Good amp
Good little amp , I use it in order to send the helix into the guitar cab
Work perfectly
I ordered this as an amp for my Sony speakers. i know it's a guitar amp but it works perfectly for my speakers. It's great value for money. The sound quality is spot on.
Would recommend.
Great amp for that money.
I?m definetly content with this amp. Enough power, even for two amp sims. Great sound.
Technical Data
- Manufactured by Harley Benton
- Released in 2014
- Average price : $193
- Lightweight Class-D technology with switch-mode power supply
- 2x 200 W @ 4 Ohm
- 2x 100 W @ 8 Ohm
- 2x 50 W @ 16 Ohm
- Bridged 400 W @ 8 Ohm and 200 W @ 16 Ohm
- Frequency range: 20 Hz - 20 kHz
- Input sensitivity: 335 mV
- Damping factor: > 80
- Signal- noise ratio: > 90 dB
- Total harmonic distortion (thd): < 0.15%
- Power consumption: 18 W (standby current)
- Dimensions : 482mm x 250mm x 44mm
- Format: 19"/ 1 HE
- Weight : 3kg
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