I know this in not on topic, but you can buy a used pair of Quicksilver V4 in yur price range. They are a great match with your speakers, especially with EL-34 tubes.
Assuming you buy Primaluna amps try them with EL-34 tubes. The Response 2.5 are not very efficient so I would get the most powerful Primaluna that will run EL-34 tubes.
Assuming you buy Primaluna amps try them with EL-34 tubes. The Response 2.5 are not very efficient so I would get the most powerful Primaluna that will run EL-34 tubes.