Just to report if anyone has the Senn HD280 Pro (new version). Been listening for about 2 weeks with my own CD ripped FLACs, Tidal Hifi and some splatter of Youtube.
The L30 has very good control of the bass and the 280Pro seems to have lost that mid bass bloom that I was always getting when driven by the Fiio E10k, a hybrid tube/mosfet amp and the Behringer Xenyx 320USB mixer. I am not using any EQ as I feel it didn't need any. The highs are not as bright as the K240 Mk2 without losing much detail. But overall I am getting a more open sound now that the bass bloom is gone. Some sub bass detail is more apparent now. Being a closed back it now has some form of soundstage. Hope I am not getting too subjective here
. Heck i am rather enjoying it a bit more than the K240 Mk 2 now as its outside noise attenuation is excellent at the cost of making me sweat like a pig here in tropics.
Rig:
Rpi3B+/Hifiberry Digi+ > Toslink > E30 > RCA > L30
MoOde set to 0dB
E30 set to DAC mode
Using Bubble UPNP on my mobile and MoOde as the renderer
Foobar2000 > foo_out_upnp > MoOde renderer
The HD280Pro being rather easy to drive, the L30 is at 0dB gain and the pot is usually around 10 to 12 depending on the source.