This is the Rowin LEF-323 Greenizer a clone of the classic tube screamer, cloned from the end of the 1970's Tamura S. Design, followed by the TS808 by Ibanez, one of the most cloned pedals ever, the Rowin Greenizer hits the bulls-eye with their version of a vintage style tube screamer tone. This is a lot like the tube pusher but has a softer more vintage "round" sound and tone, it isn't as hard and heavy as the tube pusher.
It has a Boost and normal gain stage toggle switch, the normal is your standard tube screamer TS808 all the way and the boost gives you a little more warmth and edge. Both modes sound fantastic, clean and clear. There has been plenty of TS808 and Tamura clones that have had an underlying static sound in the tone and though they sounded good, they did not sound as good as the Greenizer as it is clean and clear OD with warmth and Body.
Gain, Tone and volume knobs with the Boost and Normal Toggle Switch
Input: 1/4” monaural jack (impedance: 500k Ohms)
Output: 1/4” monaural jack (impedance: 10k Ohms)
Power Requirements: AC adapter 9V DC (center minus plug)
Current Draw: 8 mA
True Hard Bypass and no Buffer.
True Bypass Circuitry
The compact inner circuitry is designed with a 3PDT True Bypass switch ensuring an unaltered tone when the pedal is not engaged. A true bypass switch has the ability perform a true bypass of the internal hardware circuit of the pedal, meaning the signal goes straight from the IN to the OUT and does not "suck" the tone out of your signal path.
Has a full thick tone, has a clean clear hard driving edge when dialed up, does not suck bass or body out of your guitar tone when engaged.
Rowin micro effect pedals pack an incredibly BIG sound into a very small package.
BBD Chip with static filtering mode.
Micro Pedal Size Saves Room on your Pedal Board
Solid Built Metal Casing
Uses Standard Boss Style DC 9V Adapter
Package Size: 4.8 * 2.5 * 2.5in
Package Weight: 9oz

This is a center minus unit and will work with any boss or center minus supply, One Spot, power all adapters also work.

Rowin micro effect pedals pack an incredibly BIG sound into a very small package.

ROWIN Effect Pedals are a great option for those seeking boutique pedal sounds, in a small, beautiful, economical package.

• Features:

Full metal shell, durable and exquisite.
3 controlling knobs and 1 switch are accurate and high sensitive.
Volume knob: Adjust the volume.
Tone knob: Adjust the tone color.
Gain knob: Adjust the gain.
Mode switch: Switch between boost and normal mode.
Output jack: 1/4" mono audio jack for signal output.
Input jack: 1/4" mono audio jack for connecting guitar.
True bypass footswitch.

1 Year warranty

Specifications: 
Model: Greenizer LEF-323
Effect: Overdrive
Material: Aluminium Alloy
Input Impedance: 500K Ohms
Output Impedance: 10K Ohms
Current Draw: 7 mA
Power supply: AC Adapter 9V DC (not included)
Item Size: 9 * 3.8 * 4.8cm / 3.5 * 1.5 * 1.8in
Item Weight: 149g / 5.2oz
Package Size: 12 * 7 * 6.5cm / 4.7 * 2.7 * 2.5in
Package Weight: 242g / 8.5oz

Package List: I1556
1 * Guitar Effect Pedal
2 * Adhesive Tape
1 * User Manual (English & Chinese)
1 * Hardcover Box