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JHS Pedals Little Black Amp Box Passive Attenuator

Volume utility device that lets you enjoy cranked amp tones at a safe level!



Order now for delivery to you on Mon 22nd Aug 2022.

6 available

to order online today

2 available

at our Guildford Store

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    Product Description

    Be the master of your big valve amp. The JHS Pedals Little Black Box lets you tap into your saturated tube tone at a fraction of the volume you'd usually need. Without the help of the Little Black Box, you'd have to crank your amp's volume to force a natural-sounding gain. 

    Simply put the Little Black Box in your amp's series effects loop and turn the single volume dial to your liking. This adjusts the amount of signal sent to your amp's power section. Your neighbours and family will really appreciate what the Little Black Box can do! 

    Thanks to its tiny profile, you can squeeze the Little Black Box into any setup. Be it sitting on top of the amp or in a pedalboard, its rugged build is capable of taking anything you throw at it.

    Key Features

    • Run it in your effects loop to turn down a turned-up amp
    • Retain the response and tone of your amp’s sweet spot at lower levels
    • High-grade components keep your tone clear and pure
    • Passive design doesn’t require any power
    • Can easily be mounted underneath your board

    Please Note: Attempting to place the Little Black Amp Box between the power section of your amp and your speakers will result in damage to your gear. Place it in a series FX loop only. Do not use with a parallel FX loop, it will not produce the intended effect.

    Cian Hodge author picture

    Written by Cian Hodge

    JHS Pedals
    Power Source
    Trade Doubler Group ID
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    Here at Andertons Music Co. we believe that we stock some of the best musical equipment in the world. That's why we want to make it as quick and easy as possible for you to get your order, safe and sound!

    We offer a wide range of delivery options to help fit around your busy lifestyle without compromise. This includes free, named-day delivery for most UK postcodes on orders over £99 which are in stock, Saturday & Sunday deliveries, and competitive delivery rates worldwide.

    Please note: Some UK postcodes including remote areas and Northern Ireland are subject to charges.

    You can find full details about the services we offer, including details on our international delivery charges, on our main delivery page. Click here to read more.

    Customer Reviews


    33 reviews





    Trusted Customer17th May 2022

    Didn't work as described. Put in the effects loop of an Marshall Origin 20. When amp is cranked I got no breakup what so ever. Yes, the tone was better, but certainly not what I was hoping for.

    Value 1Looks 4Durability 4Sound 2

    Trusted Customer13th May 2022

    Great product that solves an old problem. Not the cheapest of it's type, but JHS products are always excellent.

    Value 4Looks 4Durability 5Sound 5

    Trusted Customer31st Mar 2022

    Does exactly what I need it to. Though I only get a usable volume for my environment in a tiny portion of the potentiometer's sweep. I suspect that the reason for this is because I'm using a 5 watt amp, but it's a little tricky to gauge.

    Value 4Looks 5Durability 5Sound 5

    Mr Bryan Keegan18th Jan 2022

    The JHS Pedals Little Black Amp Box attenuator is an absolute waste of money . . .kills your tone

    Value 1Looks 3Durability 3Sound 1

    Mr Jarkko Paaso18th Dec 2021

    Value 5Looks 4Durability 4Sound 5

    Mr G.K. Jones28th Oct 2021

    Does exactly what it’s designed I got cranked tube amp a bedroom volume

    Value 5Looks 5Durability 5Sound 5

    Trusted Customer20th Jul 2021

    Great solution for high power amps with fx loop, try it!

    Looks 5Sound 5

    Mr samuel spiteri-nobbs16th Jun 2021

    Good item except you have to run it around 11 oclock to get any bass end. This is still a decent volume but was hoping for the same sound throught the sweep of the pot. Also at full volume the amp without the black box is a lot louder so you cant leave it plugged in all the time if you want yo use it in that way.

    Value 4Looks 5Durability 5Sound 5

    Tim Hayden25th Apr 2021

    Value 5Looks 5Durability 5Sound 5

    Trusted Customer20th Mar 2021

    Does what it says on the box

    Value 5Looks 4Durability 4Sound 4

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