Hypex at your service
How do I match a Hypex amplifier with my pre-amplifier?
In basic Hypex amplifiers match with every pre-amplifier, for tube pre-amps please refer to the chapter "Cables and connections".
https://www.hypex.nl/FAQ-Hypex/FAQ-DIYClassD/General-OEM-Product-Support/General-DIY-Product-Support/How-do-I-match-a-Hypex-amplifier-with-my-pre-amplifier