That disappointing. I've seen references to a high gain (HG) RA-1, but don't know if there was a battery-powered version.OK - got my 9V batteries in, plugged to a Schiit Modi MB as DAC, and let it roll...
First impression: NO VOLUME RANGE AT ALL.
What I mean by that: the RA-1 goes from almost silent (it is never totally silent even at minimum volume) to WAY TOO LOUD very VERY fast!!!!
If minimum volume is at 7 o'clock position, then 8 o'clock is already too damn loud!!!
That is with the 325x, BTW.
RA-1 owners: am I missing something?! Did Grado build the RA-1 for MUCH harder to driver headphones?! Does not make sense to me...
Funny...
I was in the market for one of these and thought about making an offer on the that sold on eBay recently. I've learned through several regrettable purchases that many headphone amps are simply too powerful for Grado (Prestige, in my case) headphones. With my hearing damage, I need to be able to listen to music at comfortable volumes without having to 'ride the gain' constantly. I assumed, apparently incorrectly, the RA-1 would be a good match since it was presumably designed with Grado (though perhaps not my) headphones in mind.
I hope that Zachik can sort out their RA-1.
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