The Crab - Multi-Input Audio Adapter without Telephone (Mic Level Output) The Model EJ-8 is a multi-input adapter that accepts multiple line level inputs from a wide variety of audio/ video devices for input into an existing PA or music system,while providing the necessary matching and isolation for protecting the system. The EJ-8 also acts as a mixer when accepting signals from more than one source at the same time. The EJ-8 is similar to the EJ-10 except it does not have telephone line capability. Without the telephone line capability, the output signal from the EJ-8 is 22dB higher than the EJ-10. It also has a wider frequency range (20-20K Hz), and a more affordable price for those who do not need to have the telephone capability. The EJ-8 comes with everything required to connect virtually any audio source to the microphone input of an existing sound system. The EJ-8 is a completely passive device, no batteries or external power sources are required for operation. The EJ-8 features a volume control, phone and phono jacks, binding posts, and a hum switch. An assortment of interconnect cables and a nylon carrying case come attached to the EJ-8. A complete instruction manual comes stored in a pocket of the carrying case.Specifications: Inputs: Unbalanced line level / Speaker level (connections include mono/stereo phone, mono mini-phone, RCA phono jacks, and bare wire binding posts) Output: Transformer balanced adjustable mic level (3' cable with male XLR plug) Attentuation:Line level = -20dB to -100dBSpeaker level = -35dB to -100dB Frequency Response: 20Hz to 20kHz Package: Steel case with polycarbonate overlay in black Cordora nylon pouch with zipper Dimensions (L x W x H): 6.6" x 2.5" x 3" Weight: 1 lb. 12 oz.