TLA-50 features include: 1/4" TRS -10dB and XLR +4dB input and outputAutomatic level matching for interfacing -10dB and +4dB devices3 position attack and release settingsContinuously variable gain and gain reduction controlsVU metering of input level or gain reductionOverload indicationSide chain access on 1/4" TRS jackStereo linkable with another TLA-50Internal high voltage power supplyOne 12AX7A/ECC83 vacuum tube3-year warranty