Can a DAC sort out a flat\cold amp?


My pc is connected to an external sound card (scarlett 2i4 by focusrite). I bought the Yamaha a-s1200 & am really disappointed at the brightness & the lack of bass to the extend I prefer listening to my portable JBL boombox. I'm in no position to sell or trade this amplifier so I thought a DAC with eq may help the predicament. Since auditioning my equipment is not an option in my country I have no choice but to buy something purely on recommendations. I also thought about replacing the speakers but since I listen to soundcloud & youtube i really think upscaling & eq will be much more cost effective option in sorting out this issue & may give me the confidence to try a much more expensive speaker option. what would you recommend?

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Buy a Shitt Loki EQ. It used to be about $130, but I haven’t looked lately. 

Like @jasonbourne52 , I doubt it is the amp. I have heard this amp and it didn't sound bad to me. Aamof Bill Watkins used that amp to demo the Gen 4 speakers which go down to 41 hz. There was no doubt that they hit the 41hz.. I suspect something else or an incompatibility issue 

there's something wrong, but truly should not be that amp unless it is defective.

to isolate the amp: skip the pc, make a simple direct path: a cd player directly to the yamaha to your speakers. a few familiar cds. 

great? lousy? then the amp is defective, who sold it to you?