daySpring
New Head-Fier
Kinda baffled at your predicament. I have no issues driving T1 and DT880 600ohm, let alone HD650 or current hungry HE400i with this. I did upgrade to a 12V 6A power brick, but the included 12V1A did just fine at listenable volumes. Listening to well recorded symphony on the T1 much past 1 o'clock is ear piercing when orchestra gets loud.For IEMs it'll be fine. But it cannot drive high impedience like HD600 well. But it can drive HD598 very well.
It definitely has much more juice, even in the low end sub bass compared to to the Magni 2 without gain on. Soundstage is definitely a lot narrower and intimate compared to the Magni2, but it doesn't make the K702 sound like the ATH-M50 (yes, I'm exaggerating) as the M-Stage HPA2 does (a combination I do love, because of powerful bass punch and believable soundstage on the K702).