About the Ext90
The Topping EXT90 is an input extender designed exclusively for use with the Topping Pre90 preamplifier and A90 Discrete headphone amplifier. It adds three balanced XLR inputs and one single-ended RCA input, expanding the Pre90's standard 1 XLR + 1 RCA configuration to a total of 4 XLR and 2 RCA stereo inputs. This makes it ideal for multi-source audio systems. The EXT90 connects via an aviation connector and maintains the exceptional performance characteristics of the Pre90, including THD+N below 0.00007% and dynamic range up to 145dB.
Specifications
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