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EQ · API

API TranZformer GTR

The API TranZformer GTR is a 3-band EQ pedal with a variable-gain preamp capable of functioning as either a clean boost or overdrive source. It features shelving and peaking options for high-frequency shaping and an output pad for level management.

  • 9-18V DC · center −
  • 100 mA
  • Mono
New
No price yet
Used (asking)
from $314.49

The rundown

Highlights

  • 3-band EQ with adjustable gain preamp
  • Functions as clean boost or overdrive
  • High-frequency peak/shelf switch for tone shaping
  • Output pad switch for level control
  • Runs on 9V or 18V DC with buffered bypass

Best for

Guitarists seeking tone-shaping and dynamic control through EQ and preamp gain in a compact format.

Quick facts

Power
9-18V DC
Current draw
100 mA
Polarity
Center negative
Dimensions
122.4 × 95 mm
Controls
Gain, Low, Mid, High, Output, Mode Switch, HF Peak/Shelf Switch, Output Pad Switch
Stereo
No
MIDI
No
Status
In production

Where to buy API TranZformer GTR

Used listings asking $314.49–$362.56, median $346.54 (2 listings, small sample). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$314.49View
ReverbUsed$378.58View

Prices last checked 20 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the API TranZformer GTR use?

The API TranZformer GTR runs on 9-18V DC with 100 mA draw and center-negative polarity.

What are the main controls on this pedal?

The API TranZformer GTR has Gain, Low, Mid, High, Output, Mode Switch, HF Peak/Shelf Switch, and Output Pad Switch.

Does this pedal have MIDI control?

No, the API TranZformer GTR does not have MIDI capability.

Similar pedals

Same type, similar features.

Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.