I agree, the P4 is a real gem in the amplifier arena. 600mw+600mw in 32 ohms, the ability to change opamps and buffers. it has gobs of power, the only downfall of the ibasso P4 warbler, is the almost inability to find one for sale. i owned a silver p4 warbler and sold it, then i started looking since then, and only recently came across one. and bought without a single thought. sooo glad i did
i also recently bought the RSA SR71-B and to tell you the truth with the current opamp/buffer setup, the P4 sounds WILDLY like and almost exactly like the SR71-B with the P4 actually having slightly better characteristics Overall in all aspects. but there is still something about the RSA SR71-B .
If the op is interested in the P4 he also might be interested in the pb2 which is obviously alot easier to find. again gobs of power
I just got a SR71-B also. The OP mentioned wanting loads of bass. I know that the 71-B enhances bass by a very noticeable amount on my SE535s (and does a great job in general IMO), but how about the ibasso pb2? I'm too new to all this to know for sure, but are there some strong bass amps out there?