Sound Oasis S-5000 - Manual (Page 22)

A-20
Technical Specifications
Power:
DC Adapter, Input 12 V DC, 1500 mA rating class 2 transformer.
Back-Up Battery:
4 AA (1.5V each) alkaline batteries (not included)
Earphone Jack Output:
16 Ω15 mW (single channel)
Input Jack:
0.7V rms MAX