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Tubebox — a single-slot 500-series tube microphone preamp that boasts pristine audio output, superior-quality high-end design, and a value price. The small but mighty device features a Class A tube preamplifier, switchable phantom power, phase invert, selectable -20dB pad, and a super fast in-line optical compressor. The front panel includes a TRS microphone input—a standout feature typically not found on 500-series preamps.