The 676's mic/line preamp delivers up to 64dB of gain and is equipped with "premium" 12AX7/ECC83S and 12AT7/6072 vacuum tubes that Behringer claims will add "rich, harmonic warmth" to any signal.

Ultra-low noise discrete microphone/line preamplifier with hand-selected 12AX7 tube for ultra-musical sound Mic input stage based on discrete, conjugate transistor pair circuitry Ultra-wide ...