Greco STUDIO GANG HPA-1 Greco Headphone Amplifier Powered by two AA batteries (batteries not included). Includes overdrive and one external input (AUX IN, for mini-plug) for inputting sound from smartphones, etc. Headphone jack is for mini-plug. This is a listing for the main unit only. No accessories are included. It's useful for practicing at home easily. - Model: HPA-1 - Brand: Greco - Function: Headphone Amplifier - Connectors: INPUT, CHAIN, AUX IN - Controls: Drive, Input, Master, Power Product Overview 3W solid-state combo amp Orange's traditional "PICS ONLY" design 8Ω speaker output AUX input / headphone output Built-in tuner / battery powered Sound check performed, sound output confirmed via headphones. Drive changes are present. Brand: ORANGE Product Name: Orange Crush MINI Orange Guitar Amplifier Mini Amp CRUSH-MINI-OR Manufacturer: ORANGE Battery powered Power on, tuner, and sound output were briefly confirmed. Overdrive sometimes distorts heavily. Please consider this as junk. I have only been able to confirm what I can. Expect a lot of rare items. Please refrain from bidding if you do not understand used books and used items. If you are nervous, please purchase a new item. Please check the condition in the photos.