Modi 3+ VS Bifrost OG Multibit (aka Bimby, BFM1)
in initial testing, I find that the Modi 3+ (AK 4490 based) has a smoother sound, with the leading attack of notes and natural transients softened a bit. for some source material with an edge, this may be a plus.
While BFM1 has better dynamics, detail, soundstage width & depth (less '"in your head") in my current setup, BFM1 was much more expensive unit than the $99 Modi 3+.
On the plus side, Modi 3+ reduced some of the A3's excess warmth in my setup. Will try using Modi 3+ with Freya S in 1x gain mode over the next week to see how that sounds...
for others, especially those starting out in head-fi or on a budget (wisely), the $99 Modi 3+ offers a lot of input options, including the Unison USB receiver (without electromagnetic isolation), nice build quality (2 year warranty), and a compact enclosure that stacks nicely with Magni, Loki-mini EQ, mani phone pre.
for reference, rest of the chain: sony NS500V cd player, (processing turned off, 16/44.1) to DAC via s/pdif coax, DAC analog out using 0.5M interconnects to Freya S in passive mode (remote volume control), more 0.5M interconnects to Asgard 3, driving low-impedance mid-range planars.