JOYO JF - 07 True Bypass Design Classic Flanger Electric Guitar Effect Pedal with BBD Simulation Circuit JOYO JF - 07 Clssic Flanger Guitar Effect Pedal uses a BBD simulation circuit， which makes JOYO JF - 07 a very versatile pedal. It has 4 adjustable knobs， Regen， Delay Time， Width and Speed， which allow the user to shape the desired sound. You can easily get a variety of sounds from a jet air plane to space effects to a short delay to wave-like chorus， and vibrato. This is a very well electrically designed and mechanically rugged pedal， at a great price!4 Adjustable Knobs:Regen: How much feedback the pedal throws into the mixDelay time: Obvious enough， the speed of the swirlWidth: Play significantly with the modulation， basically affecting how far the flanger goes away from unmodulated or cleanSpeed: Impact swirliness and overall， control the wobbleFeatures:Uses the BBD circuit to achieve great metallic flange sounds， wave like chorus sounds plus rapid tremulous vibratos.Great for standing out in a band mix or to provide an swirling energy to your sound.4 adjustable knobs control Speed， Regain， Width and Delay Time.True bypass design minimizes tone loss.Aluminum alloy casing with stoving varnish finish. Brand: JOYO Model : JF - 07 Package weight: 0.514 kg Product size (L x W x H) : 12 x 9 x 5 cm / 4.72 x 3.54 x 1.97 inches Package size (L x W x H) : 13 x 10 x 6 cm / 5.11 x 3.93 x 2.36 inches Package Contents: 1 x JOYO JF - 07 Classic Flanger Guitar Effect Pedal