There is no way that Cayin nor Prima Luna amps are better. You can spend 4k on a CD player but it is doubtful to best the old JD100A player (no longer available).
I'm sorry but that is a very bold statement. Have you listened to PrimaLuna or Cayin for comparison? I have had several Jolida pieces of equipment and I can say they are great for the money but does my Primaluna Dialogue Premium integrated sound better? Without a doubt it does. Does my Marantz SA11-S1 or S2 sound better than the JD-100 CD player? Hell yes. Did my BAT VK5i sound better than the Jolida Envoy preamp? Again yes. Did the Jolida sound bad. No it didn't but common sense says yes there is better than Jolida and you don't have to spend a arm and a leg to achieve better sound. Would I ever hesitate to purchase Jolida again. Hell no.