The BHA-1 is mostly a headphone amplifier but, as you'll see, it could also serve as a minimalist two-chael preamplifier. On the back, you will discover three stereo inputs - one particular balanced XLR, one single-ended RCA and a single single-ended mini-stereo input. There's also a single pair of balanced XLR outputs that can be used to drive an amplifier. The balanced XLR output's level is controlled by the big volume knob on the front panel, which in essence tus the BHA-1 into a preamp. As opposed to merely passing a fixed-output line-level signal, the BHA-1 has a variable output level, producing it suitable for pre-amplifier duties. The only limiting aspect for pre-amp use is there's on...
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