I've heard this said a lot with respect to loudspeakers too. Surely doubling down in power output only becomes crucial when you are approaching the maximum output capability of the amp? For example, if a loudspeaker has a nominal impedance of 8 ohms and minimum impedance of 4 ohms, an amp that can output 100wpc max into 8 ohms but only 150wpc max into 4 ohms will still be able to deliver 10wpc into 8 ohms and 20wpc into 4 ohms without limiting the current?
Schiit claim the Jotunheim can drive the HiFi Man HE-6 so I'd have thought the Jotunhiem would have plenty current supply for the Aeon 2?
Jotunheim specs:
Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-700KHz, -3dB
Balanced Headphone Output:
Maximum Power, 16 ohms: 7500mW RMS per channel
Maximum Power, 32 ohms: 5000mW RMS per channel
Maximum Power, 50 ohms: 3000mW RMS per channel
Maximum Power, 300 ohms: 900mW RMS per channel
Maximum Power, 600 ohms: 500mW RMS per channel
Single-Ended Headphone Output:
Maximum Power, 16 ohms: 2500mW RMS per channel
Maximum Power, 32 ohms: 1500mW RMS per channel
Maximum Power, 50 ohms: 800mW RMS per channel
Maximum Power, 300 ohms: 350mW RMS per channel
Maximum Power, 600 ohms: 175mW RMS per channel