Which of these dac/amplifiers can run the HD650 at full potential and would match the best?
- TOPPING DX5 II Dual ESS9039Q2M 300€ 6.4W
- FiiO K13 R2R 319€ 1.2W 2.4W
- FiiO K7 AK4493SEQ 230€ 1.2W 2W
- Fosi ZH3 AKM4493SEQ 200€ 0.65W 2.6W
- Fosi Audio K7 AKM4493SEQ 200€ 0.6W 2.1W
Does the Fosi K7 do not have enough power for the HD650?
A cheap, small high-powered dongle like a JM20 Max (250mW) can definitely drive it loud enough.