Vicca Tito
100+ Head-Fier
HA-3 won't offer the same sound signature as C5, so try to arrange an audition in person before you go for that.
Mrspeakers Prime? Do you mean Prime Dog? I have the Alpha Dog and among the Cayin headphone amplifiers, HA-1Amk2 is my favorite choice for Alpha Dog, but this is quite a bit more expensive then HA-3.
Hi and sorry for a late reply.
I meant MrSpeakers Alpha Prime. HA-1 has somewhat non-conventional form factor for my current setup although I have no doubt it would sound very good indeed with Alpha Primes. But, how about lesser amps in The Cayin playground, like Cayin HA2i?