runninkyle17 OP1 posts@georgehifi That is interesting.
Can you explain in a in a little more detail. Does the primaluna amp have issues with high impendance loads?
In a way this one does into high impedance also, as this graph shows it has a sharp rising frequency response peak from 10khz to 50khz into 8ohms, 4ohms and also the simulated speaker loads, the only time this is flattened out is into the green 2ohms load???
"Stereophile Fig.1 PrimaLuna DiaLogue Premium HP, 4 ohm tap, triode mode, frequency response with volume control at its maximum at 2.83V into: simulated loudspeaker load (gray), 8 ohms (left channel blue, right red), 4 ohms (left cyan, right magenta), 2 ohms (green) (1dB/vertical div.)."
Read more at
https://www.stereophile.com/images/1214PLDPIfig01.jpgThis sharp rising peak is also shown up as a nasty overshoot on a 10khz square wave.
https://www.stereophile.com/images/1214PLDPIfig03.jpgCheers George