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Old 8th February 2015, 07:52 PM   #1
Hikari1 is offline Hikari1  United States
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Default BA-3 front end as headphone amp

Well, I just started to get into headphones. I do a lot of computer work during the day so I bought a pair of Grados and I am starting to enjoy them.

Started to look at putting together a headphone amp like the AMB B22 or a dynalo but then I realized...I am using the BA-3 front end in my main system as a preamp. Looking at some headphone amp designs it dawned on me...Could the BA-3 front end be used for headphones? My Grados are 32 ohm. Seems like it would work to me.

Anybody have any suggestions on how to add a headphone output to this thing? It has enough gain but what about current?
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Old 8th February 2015, 08:09 PM   #2
Zen Mod is offline Zen Mod  Serbia
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lower rails , higher Iq , optimized loading on output

so , doable
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Old 8th February 2015, 08:24 PM   #3
Hikari1 is offline Hikari1  United States
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Thanks Zen. Well, it's going to be used as my regular preamp AND headphone amp. I was thinking of just tapping the output to a headphone jack...lowering the rails and more bias is not gonna work.

Or maybe a buffer on output?
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Old 8th February 2015, 09:33 PM   #4
Zen Mod is offline Zen Mod  Serbia
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buffer yeah

but , I believe that you'll find BA3 redundant then
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