PreSonus ADL 600

Controls: 8-position gain switch (>73dB gain), 4 mic-input impedances (1500/900/300/150 ohm)

I/O: 2 transformer-balanced XLR mic inputs, 2 transformer-balanced XLR line inputs, 2 transformer-balanced XLR line outputs, 2 unbalanced 1/4" instrument inputs

Notable use: Class A dual-channel tube preamp co-designed with Anthony DeMaria (ADL), +/-300V power rails

Notes: FLAG: presonus.com marks this model 'Discontinued'/sold out with no listed price as of research date (2026-07-18); price left blank per golden rule. Included per task scope as part of the ADL preamp line.