Excellent card; will happily record four HD channels without issues (not that there’s much ‘quadrilinear’ DVB T2 content out there!). WinTV 8.5 is a great application under constant development. One caveat - if upgrading from another Hauppauge product, in my case the USB WinTV Dual HD, erase the channel database or the two extra tuners won’t be detected by the Quad HD.