Rowin LEF-315 Dumbler Overdrive Guitar Effects Pedal

Product ID: 108158

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  • The Rowin LEF-315 is a boutique effects pedal at a low price
  • Big sound, little body - slots into any pedalboard discreetly
  • Super build quality with a durable exterior
  • The LEF-315 simulates the legendary Dumble amplifier
  • An effects pedal which is as boutique as the amp it is emulating
  • Unlike many other dumbler pedals, the Rowin LEF-315 is on a small budget
  • True analog circuit and true bypass for unblemished dry signal
  • Simple volume and tone controls as well as a gain dial to suit your output
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Delivery to UK mainland addresses* is FREE on orders over £75 and up to 30kg. (As a guide, a standard electric guitar weighs approx. 3-5kg).

Delivery on orders below £75 are charged at £4.45!

Delivery to Northern Ireland, the Scottish Highlands & Islands, Isle of Man, Isle of Wight and Channel Islands is weight dependant and will be indicated at the checkout

Delivery above 30kg to ANY location will vary according to weight and will be indicated at the checkout

LocationPriceStandard Delivery
UK mainland* FREE on orders over £75 £4.45 on orders under £75 1-3 working days
Northern Ireland, Scottish Highlands & Islands Isle of Man Isle of Wight Channel Islands £12.95 – any order value up to 30kg Over 30kg - please call 1-3 working days
Overseas Please call for details Please call

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In the 1960s, a man called Alexander 'Howard' Dumble began modifying amps, then soon after began building his own high-gain amps which became incredibly popular though they were hard to come by. These boutique amps could sometimes be priced way, way out of a mere mortal's average budget so over the years numerous companies have strived to try and recreate that Dumble sound. The Rowin LEF-315 does a magnificent job of emulating the custom manufactured Dumble amp which is an incredibly rare amplifier that is highly sought after. The best thing about this boutique pedal is that unlike any similar dumbler counterparts, the Rowin LEF-315 Dumbler comes at a surprisingly affordable cost so that any guitarist can take advantage of its amazing sound.


The control layout on the LEF-315 Dumbler is very simple to use, but offers a very powerful and varied response. There are three knobs that control Gain, Tone and Volume, as well as a Voice button and footswitch control.

You can turn the Gain dial to the 12 o' clock position for a basic output, turn it down to use as a boost or turn it right up for some heavy overdrive. Use the tone dial to adjust your sound to match the amount of gain you wish to generate.

The Voice control is unique and gives your sound a crisp bite and it also allows you to adjust the colour of your guitar's overdrive just by moving the pot to the desired setting.

As you would expect, the Volume pot controls the output volume of the Dumbler pedal so you can modify the volume to suit your playing needs, whether you're about to go into that favourite live song on stage or record a heavy overdrive riff.


The Rowin LEF-315 Dumbler pedal may be small and compact in size, but it has a robust chassis that can be slotted in perfectly onto any pedalboard so you can take it from venue to venue anywhere you go. It has all the typical appointments of a typical boutique overdrive pedal and has a 9v power supply. If you don't want to go overboard on spending or just want to try something different, the Rowin Dumbler pedal does a magnificent job of mirroring that classic Dumble amplifier sound.

ModelLEF-315 Guitar Effects Pedal
Controls Gain

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