An improved magnetic resonance (MR) imaging system ( 10 ) is provided. A plurality of receiver coils ( 12 ) may be configured to supply respective coil output signals based on a plurality of magnetic resonance response signals sensed by the receiver coils. Each receiver coil defines an enclosure constituting a Faraday cage. At least one circuit device ( 22 ) is disposed in the enclosure ( 24 ) to condition the coil output signal. This enclosure enables the circuit device ( 22 ) to be shielded from electromagnetic interference.