The Hypex FusionAmp FA503 can be an excellent foundation for designing a powerful 2-way or 3-way speaker. It is indeed capable of delivering 2x500W RMS power at 4Ω using a pair of NCore amplifiers. It can also be bridged (BTL mode) to obtain a powerful 1000W RMS amplifier. An additional channel of 100W RMS allows to power a tweeter.

On the connection side, there is a balanced XLR input, an unbalanced RCA input, an AES input, a Coaxial SPDIF input and a Toslink Optical input on the front panel. Pass-Through outputs are available for XLR, AES and Coaxial. A Mini USB configuration interface is also present.

The FA503 also includes 15 biquad filters per amplifier, 3 predefined filter profiles, a source select button, a signal detection and auto power off function, and a complete protection system.