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API Select TranZformer GTR - EQ, Boost and Overdrive Pedal

by API
£228.00 inc. vat
£190.00 ex. vat
In Stock - Available for Immediate Dispatch

API Select TranZformer GTR - EQ, Boost and Overdrive Pedal

The API Select TranZformer® GTR incorporates API’s legendary EQ circuit into a versatile and compact guitar effects pedal. Designed to easily fit into your pedal board and engineered to run on standard 9V power supplies, the GTR offers +/- 15dB of gain on 3 specific frequencies. Additionally, the gain stage can be switched from Clean Boost to Overdrive mode to drive the input OpAmp and add even more tones to your arsenal. Other features include a buffered bypass, - 20dB output pad, selectable peak/shelf for upper frequency range, transformer output, and of course the classic API sound.


  • Proprietary API 2510 OpAmp
  • Signature API output transformer
  • 3-band EQ each with +/-15 dB of gain
  • OpAmp overdrive circuit
  • 40 dB of gain
  • -20 dB output pad
  • Buffered bypass


  • Input connection: 1/4" Hi-Z unbalanced instrument input
  • Input Impedance: 1MΩ
  • Bypass: Yes, buffered, 0dB
  • Output connections: 1/4" Hi-Z unbalanced output
  • Output Impedance: Hi-Z output: Less than 1kΩ
  • Input Gain Control: 0dB-40dB, Variable
  • Output Pad: 0dB to -20dB, Switched
  • Maximum output level before clipping: + 15dBu (9VDC), +22dBu (18VDC)
  • Frequency Response: +0dB, -1dB, 20-20kHz (tone controls at center detent)
  • Tone Control:
    • 200Hz & 1500Hz Peaking, 5kHz Shelving/Peaking (w/switch), continuously- variable boost/cut, +/- 15dB range.
    • API 2510 amplifier overdrive (Switched) placed before tone controls. Clean boost amplifies the signal with no added distortion.
  • Power Supply: 9-18VDC @ 100mA
  • Size: 4.6” x 3.8” x 3”
  • Size (Boxed for Shipping): 6” x 4.5” x 4.5”
  • Actual Weight: 1.5 lbs.
  • Shipping Weight: 2 lbs