Input: 1/4 inch monaural jack(impedance: 470K ohms)Output: 1/4 inch monaural jack(impedance: 100 ohms)Headphones: 1/8 inch monophonic jackPower Supply: DC 9V (plug polarity is positive on the barrel and negative in the center)（Does not contain）Size: 21.5 * 6.5 * 2.5cm/ 8.5 * 2.6 * 1inFeatures:3-in-1 guitar multi-effects pedal, echo + ensemble + overdrive, giving you various guitar sounds. Aluminum alloy shell, durable to use; portable design, easy to carry.Echo: It's a well-designed filter circuit gives you a warm tone like analog delay. The wide delay range makes it suitable for various styles of performance. With level(adjust the effect volume), delay(adjust the delay time) and feedback(adjust the effect feedback) knobs.Ensemble: 2 modes-- Deep and Normal; It is an analog line chorus with a fresh and wide; with level(adjust the effect volume), rate(adjust the effect speed) and depth(adjust the effect depth) control knobs.Overdrive: classic tube screamer overdrive tone. 2 working modes-- Warm: reappeared classic tube speaker with a dynamic warm overdrive tone, natural, smooth and sweet; Hot: more powerful output than warm mode, strong crunch tone. with level, gain and tone control knobs.With 1/4 inch input jack for connecting guitar, 1/4 inch output jack for connecting guitar amplifier, and 3.5mm output jack to connect with headphone; LED indicator shows working status.Note:Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect PedalPlease Note: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. Please refer to the actual product received.2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!