My apologies if this has been covered elsewhere-- I searched this thread, looked through the manual posted on the Grant Fidelity site, and did a Google search but haven't had any luck-- but does anyone know if the gain can be easily changed from within the unit, by jumpers maybe? I've always made do with the high output from the D100, but as I'm now finding the headphone amp doesn't pair particularly well with the ASG-2 I just got, I'm trying to use one of my portable headphone amps instead but cannot, as the volume is just too loud even with the amps set to the lowest possible settings.
In case it matters, I'm currently using the RCA-outs from the D100 directly into the portable amps, and my understanding is that this is an unattenuated output, which just makes it too darn loud. The two portable headphone amps I've tried thus far are the Leckerton UHA-6S Mk.II and Meier Audio PCSTEP, neither of which could attenuate the sound enough to be usable, although the Meier was more useful than the Leckerton was in this instance.
I realize I can get cable adapters with resistors in them to reduce the signal level, but I was hoping there'd be an option that didn't put more in the signal path. If this would be a better option, or there is no internal gain adjustment, or even if there's something else I'm not considering, I'd love to get any feedback anybody would care to share!!
Thanks in advance for any help someone could offer!