I have the FiiO E09K and E7 with some Sennheiser HD650/600 headphones, but looking to upgrade. I'd like to replace the DAC, get an amp, and also get some passive speakers. I just want to know if it's okay to use passive speakers with headphone amps.
If it's alright to use speakers with some headphone amps, what are some good combinations? Doing some searches, I've seen a person use the Schiit combo (Magni + A2) with some powered JBL speakers. The other DAC/amps I've read about are the Audioengine D1 and Nuforce Icon HD. Are these all generally strong enough to power passive speakers?
Regarding speakers, the only ones I know of are the Audioengine A2. Any others?