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Electro Harmonix Micro Q Tron Guitar Effects Pedal


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  • High quality guitar effects pedal with envelope controlled filter
  • True bypass for unblemished signal quality when not active
  • Drive control sets sensitivity and filter sweep range
  • Selectable low pass, band pass or high pass filters
  • Q control sets the filter's bandwidth from smooth to funky
  • Tough and compact die-cast chassis for durability
  • 9-volt battery included to get your playing immediately
  • Optional 96DC-200BI power supply available
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Delivery & Returns

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, Channel Islands and the Republic of Ireland. 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 £751-3 working days
Northern Ireland, Scottish Highlands & Islands Isle of Man Isle of Wight Channel Islands Republic of Ireland£12.95 – any order value up to 30kg Over 30kg - please call1-3 working days
OverseasPlease call for detailsPlease call

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The Electro Harmonix Micro Q-Tron Guitar Effects Pedal is identical to the original EHX Mini Q-Tron but in a more compact and portable pedal. The envelope controlled filter is a unique type of sound modifier in which the user's playing style controls the effect. The volume of the input signal (also known as the envelope) controls the cut-off frequency or the centre frequency of a swept filter. As your instrument's volume increases or decreases, so does the pitch of the filter. A pedal like this can lead to some seriously experimental effects, adding a little more surrealism to your song writing.

Control layout

With regard to connecting the pedal up, it couldn't be easier: guitar connected to pedal input; amp output connected to your amp (or the next pedal in your chain) - simple. The control layout is equally as simple, yet offers an astonishingly varied and unique array of sounds to play with. The DRIVE control adjusts the filter sweep sensitivity - the higher the setting, the higher in frequency the filter leaps when you play. The Q control determines the peak bandwidth of the filter - the higher the Q control setting, the narrower the peak to create a stark and dramatic sound. The MODE rotary switch allows you to determine what frequency range the filter will pass: LP (Low Pass); BP (Band Pass); or HP (High Pass).

Status LED and Power

The Status LED enables you to see whether the pedal is active (LED on) or inactive (LED off), something that is often the lowest concern on the list until you're on a very noisy, darkened stage with only have the lights to guide you. As with the tank-like chassis, the footswitch feels very resilient, with an encouraging click that offers a reassuringly solid response.

Power can be supplied to the Micro Q-Tron in one of two options: battery or power supply. Each unit is supplied with a 9-Volt battery to get you started, and at any point can be switched out for a replacement, making it entirely portable. However, during lengthy gigs, night after night, a 9-Volt power supply may be favoured. The connector on the front of the Micro Q-Tron applies to a 9-Volt battery eliminator capable of delivering 100mA of current. The inner ring of the eliminator must be negative, with a positive outer ring. The battery can be left in or removed when the power supply is in use, it’s up to you.

ManufacturerElectro Harmonix
Model Micro Q Tron Guitar Effects Pedal
Dimensions (H x W x D) 89 x 102 x 121 mm
Weight 0.5kg
ControlsDrive Control, Q Control, Mode Rotary Switch, Status LED, Footswitch
ConnectorsINPUT Jack, AMP Jack, AC Adaptor Jack (DC 9 V)
Included Accessories9-Volt Battery
OptionsUS96DC-200BI Power Supply
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