I don't understand strange symbol in top right of the picture. It shows +-10V Gnd, but there are no +/-10V rails in the rest of the circuit. Does this circuit require positive and negative voltage power supply?
There's a voltage source representing the input at the top left, perhaps that what you mean? The load
is represented by a programmed (dependent) current source symbol bottom right. No supplies are shown
in the circuit, they are implicit (normally the case for signal processing schematics, supplies are boring
(for instance look at the datasheets for the amplifiers referred to)