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About the Ext90
The Topping EXT90 is an input extender for the Topping Pre90 preamplifier that adds three balanced XLR inputs and one single-ended RCA input, expanding the Pre90 from 1 XLR + 1 RCA stereo input to 4 XLR + 2 RCA stereo inputs. It is designed to work exclusively with the Pre90 and uses a special connection cable/aviation-style connector to integrate with the preamp.
Specifications
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