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Pete Cornish 3Q-1 Deluxe Series - 3 Band Active EQ + Linear Boost

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Pete Cornish 3Q-1 Deluxe Series - 3 Band Active EQ + Linear Boost
Our Price $699.99

Availability: In stock

We are proud to present our new Tone and Volume Boost- the 3Q-1™. The 3Q-1™ is not a variant of any existing product but a completely new and original design. 
The Input is fully buffered using our LD-1 Class A unity gain line driver and RF filter which is also active in bypass mode. The first stage of the 3Q-1™ is a variable gain linear boost with flat frequency response - the gain range of the boost is 0 to +20dB (10X).

Following on from the variable gain Linear (Clean) Boost is a three band active EQ using frequencies I have specifically tailored to suit guitars. Being active, the three tone bands can be both cut and boosted as desired with the zero or neutral point being 12 o'clock on each control knob. The benefits of this active tone circuit, compared to the usual passive (Cut only) tone circuit is that the three bands are completely independent and there is no inter-reaction between the Bass, Middle and Treble tone controls and each band can Boost or Cut as required.

An output Master Volume is included to allow for perfect matching between bypassed and boosted/EQ?d signal level and there is plenty of signal headroom available to overdrive amp inputs if required.



  • RFI rejecting input and bypass buffer.
  • Each unit is hand built, wired and tested by Pete, Lynda and Mingus Cornish.
  • Housed in a Rugged Die-cast box with lined control knobs.
  • Heavy Duty Custom made all-metal footswitch with large cap and protection ring plus Hi-Brite LED.
  • Easy battery replacement via a removable ?drawer?. The battery is switched on when you insert the "IN/PWR ON" jack and to ensure long battery life unplug this lead when the unit is not in use. If the unit is not to be used for a long length of time, or to be adapter powered, we recommend that you remove the battery. Preferred battery type is MN1604. Also fitted is an input for a DC adapter: the size of the coax connector is 5.5/2.1mm and the centre pin is negative (-VE). The adapter should be noise free, fully stabilised at 9V DC and capable of supplying 20mA. When multiple effects pedals are to be powered, we recommend the use of the Voodoo Lab Pedal Power 2 Plus adapter as meeting the above criteria and cannot accept any liability for damage caused to this unit by the use of, or to, any other type of DC adaptor. If only a single unit is to be powered the BOSS PSA series may be more cost effective and is also recommended.



  • Overall boost with Gain = 100% and Volume = 100% is +20 dB
  • Overall boost with Gain = 0% and Volume = 100% is +0 dB    with Bass, Middle and Treble set to 50% (Neutral point).
  • Bass Control range +/- 16dB @ 40Hz
  • Mid Control range +/- 15dB @ 1.2KHz
  • Treble Control range +/-18dB @ 8KHz
  • Maximum signal output with Volume 100% is +10dBm/ 2.5vrms/6v Peak to Peak. 

Dimensions: 171 X 121 X 55 mm / 6.75 X 4.75 X 2.2 inches

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