I use an Ocean Matrix OMX-9056 switch with my Sony ES gear which allows me to not only select one of four sources but to direct that source to one of four target devices. I use it to port CDP's to a Receiver, Integrated Amp, and two Preamp/Amp pair. I love the flexibility it provides and find it to be a very high quality device which it's price tag reflects. Probably past the point of diminishing returns but I use a number of different switches in this particular setup and because I value the components, did not want to low ball the switches.
Here are the features and specs if anyone is interested:
Features:
High quality switching elements, for high isolation between inputs
All unselected inputs are internally terminated with 75 Ohm resistors
Carefully designed double sided PCB, especially suited for high frequency work. Mechanical (Passive) Switching - No power required.
Separate Audio & Video Switching - One crosspoint (each).
Desktop Size - Compact size. Two units can be rack mounted side-by-side in a 2U rack space with the optional RK-4E/S adapter.
Technical Specifications:
INPUTS: 4 video, 1Vpp/75 Ohms on BNC connectors. 4 audio stereo, up to 36Vpp on RCA connectors.
OUTPUTS: 4 composite video (or RGBS), 1Vpp/75 Ohms on BNC connectors. 4 audio stereo, up to 36Vpp on RCA connectors.
SWITCHING SYSTEM: Mechanical, "Break-before-make".
CROSSTALK: -42dB. Chroma, - 60dB. Sync.
BANDWIDTH (-3dB): 475MHz.(video), 100kHz.(audio).
DIMENSIONS: 18.8cm x 7cm x 7cm (7.4" x 2.7" x 2.7") W, D, H.
WEIGHT: 0.65kg. (1.4lbs) approx.
I have no affilitation. Just a satisfied customer.