The Behringer 676 Tube Preamplifier and Limiting Amplifier is poised to become your new favorite mono signal processing unit with its classic vacuum tube preamp, FET-style compressor, and custom-built Midas transformers. Top-shelf 12AX7/ECC83S and 12AT7/6072 tubes arm you with that sound, ready to ready to enhance your productions. Additionally, studio engineers attest that the 676 is incredibly easy to use. The Join/Split switch lets you operate both units together or separately; the preamp section features controls for input gain, impedance, polarity, high or low frequency shelf, and high or low boost/cut. Meanwhile, the compressor sports ultra-fast attack times of 20 to 800 microseconds and adjustable release times from 50 to 1100 milliseconds, enabling you to level out vocals or add some punch to bass equally well. A vintage-style meter provides visual feedback of both output and gain reduction. Finally, the 676 arrives with onboard controls for switchable pad, polarity reverse, and 48 V phantom power. And just think: all of this is housed in a 2RU unit!