Check the listing for details. Warm Audio WA12 MKII Microphone Preamp - Black. Color: Black, Condition: Open box. Listed at 400.00 USD. *OPEN BOX/LIKE NEW The Warm Audio WA12 MKII is a dual-transformer microphone preamplifier that is designed for high gain (+71 dB), high headroom, and low noise. It is suitable for all types of recording applications and is based around a discrete op-amp, the X731. The X731 can achieve vibrant, clean, and lifelike tones, but can also be driven into mild saturation at much higher gain levels. The WA12 MKII includes both XLR and 1/4'' TRS inputs and outputs and has a variable impedance input with a unique "Tone" button. Fully discrete design with a robust 71dB of gain to power all your mics — even ribbons High-voltage X731 operational amplifier, based on the classic Melcor 1731 Tone button gives you tonal versatility by switching input impedance from 600 to 150 ohms 48-volt phantom power, 20dB pad, and polarity invert switches Mic level balanced input: XLR or 1/4″ TRS Balanced outputs: XLR and 1/4″ TRS 2 Mohms true hi-Z input on front panel — great for guitars, bass, keyboards Custom-designed Cinemag input and output transformers LED gain indicator Tech Specs Preamp Type:Solid State Mic/Instrument Preamp Number of Channels:1 Phantom Power:Yes Pads:-20dB Polarity Switch:Yes EQ:Tone impedance switch Analog Inputs:1 x XLR (mic), 1 x 1/4" (Hi-Z) Analog Outputs:1 x 1/4" TRS, 1 x XLR Power Source:Standard IEC AC cable Height:1.75" Depth:8.5" Width:10.5" Weight:0.99 lbs. Manufacturer Part Number:WA12 MKII Black