AA - AVS-5 Yalve Stack True Bypass Mini Portable Guitar Effects Pedal for Guitar Bass<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 1. Input Impedance: 470k Ohms </span></li><li><span class="a-list-item"> 2. Output Impedance: 10k Ohms </span></li><li><span class="a-list-item"> 3. Power Supply: AC Adapter 9V DC， centre negative( Power adapter is not included) </span></li><li><span class="a-list-item"> 4. Current Draw: 6mA </span></li><li><span class="a-list-item"> 5. Dimensions: 94x42x48mm </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41JY62rNfsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/413-4b4jHbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zxs4QReJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/412OxrqtvZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41GyXVzEhfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51RnRuT0IoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51lXDzSEU1L.jpg" noproxy>