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Extreme tiny all-tube guitar amplifier head, despite it's diminutive size this thing sounds impressively large. Just like those old '50s bass amps we all love to use for the guitar so much.

Normal/Bright andThin/Mellow mode select switches, gain and volume controls, 8+¬/16+¬ speaker out select and full metal construction.



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GAK.CO.UK LTD is registered in England and Wales 04578270. Registered office: 30 - 34 North Street Hailsham East Sussex BN27 1DW GAK.CO.UK LTD acts as a credit broker and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. GAK.CO.UK LTD is an appointed representative of The Guitar Amp and Keyboard Centre Limited which is authorised and regulated by the Financial Conduct Authority. GAK.CO.UK LTD FCA registration number is 731400. The Guitar Amp and Keyboard Centre Limited FCA registration number is 684977. Credit provided subject to age and status

V12 Retail Finance Limited. Registered in England and Wales 4585692. Registered office: One Arleston Way, Solihull, B90 4LH. Authorised and regulated by the Financial Conduct Authority. Our FCA reference number is 679653.

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Customer reviews

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  • David Beaven


    I choose the Monster BM to get a different sound from the amps I already own (Marshall & VOX). I was looking for something that has a clean tone which I can then drive with pedals. The amp delivers on that with a mellow, 'tube' driven warm sound. I'm using it in a home studio so 5W is plenty loud enough (cranking it up into a marshall 4x12 and the whole household knows it). I did have a problem with the first unit I received (hence 4 stars) - it stopped working after 2 days. GAK made the replacement process very easy (old unit was picked up from home and new one delivered 2 days later) - the new one is working fine.

  • Mr. Matthew Clarke


    Early days, but it sounds great, thicker than my usual Vox style amps, which is why I wanted to try it. Looking forward to doing some recording. Tone adjustment is limited, so I found a couple of sweet spots, one clean, one dirty. Pretty loud if needed. Valves look a bit Chinese cheap, but could be upgraded.

  • Chris Ross


    Love it,the lovely bluesy sound I was looking for.

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