The Pueblo Audio OLLA Hybrid DI Box is an aluminum direct box with XLR and THRU connectors. This item is rarely available used. Used only indoors, I used it for the line output of an acoustic guitar, but it's especially popular with bassists. - Brand: Pueblo Audio - Model Name: OLLA Hybrid DI Box - Connectivity: XLR, THRU - Material: Aluminum - Included: Original box Thank you for looking.