AUDIOPHONICS HPA-S450ET Amplifier (2x Purifi 1ET6525SA) Impressions

[Karmacoma]

hi, have you tried that Sparkos OP-amp? is it directly compatible, because it is a class A circuit that needs much more current.
This is a great power amplifier. This doesn't sound dry. There's even a bit of loudness to the sound. I'm driving KEF Q11 Meta speakers with this, which are a bit difficult to load. With the Sparkos OP amp, you could get a bit more tonal, maybe even airier highs.

Hello, welcome to ASR.