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Warm Audio WA12 MKII Microphone Preamp , this item is no longer available, below are some similar products you may be interested in.

Warm Audio WA12 MKII Microphone Preamp

1-channel Mic/Instrument Preamp with 71dB of Gain, Cinemag Transformers, hi-Z Setting, Phantom Power, and 20dB Pad
Item ID: WA12MKII
Sorry, the Warm Audio WA12 MKII Microphone Preamp is no longer available. We've left this page up for reference only.
Check out the great alternatives on this page or call toll-free (800) 222-4700 to speak with a Sweetwater Sales Engineer about similar products.
Warm Audio WA12 MKII Microphone Preamp
Warm Audio WA12 MKII Microphone Preamp
Warm Audio WA12 MKII Microphone Preamp

Great Preamp, Amazing Value

This article was Written By

Our Product Research Team

Get to know them!

Many Sweetwater engineers prefer mic preamps that do something. And no, we're not talking about boosting gain — they all do that. We're talking about making your signal sound better. Character. Coloration. Whatever you want to call it, it's that inimitable sonic quality that the most coveted classic consoles and outboard gear had. Warm Audio's WA12 MKII preamp has it, shaping your sound with an exciting, vibey warmth that makes any vocal or instrument sit proudly in your mix. We dig the Warm Audio WA12 MKII, and — especially considering its gentle price tag — we're sure you will, too.

Coloration — and why you want it

The most coveted vintage consoles and outboard gear weren't transparent. And that's the point behind the Warm Audio WA12 MKII. Coloration is, in many cases, desirable. If your mixes sound unprofessional, lacking in vibrancy and depth, you'll adore the WA12 MKII. Subjective listening tests played a big part in the development of this amazing preamp. Test equipment can tell you only so much, and there's a point in the design process where you've got to let your ears call the shots. You wouldn't mix with earplugs and an oscilloscope, would you?

Impedance switching gives you sonic versatility

Warm Audio equipped the WA12 MKII with a secret weapon: a Tone button that switches the input impedance from 600 to 150 ohms. Pushing this button changes the tone of both the mic and hi-Z inputs, letting you individually optimize for each of your microphones and giving you a measure of sonic versatility without having to resort to EQ. And speaking of mics, with 71dB of gain, the WA12 MKII has enough on tap to handle your favorite ribbon mics.

Top-tier performance — amazing value

At Sweetwater, we understand that outfitting your studio is a balancing act between performance and value. Warm Audio gets that, and their WA12 MKII delivers on both counts. In spite of its ultra-reasonable pricing, Warm Audio gear is made using only the finest components like genuine Cinemag input and output transformers. Look at it this way: at this price, you can pack your rack with two or more WA12 MKII preamps — a capital idea if you record live drums or more than one track at a time.

Warm Audio WA12 MKII Mic/Instrument Preamp Features:

  • 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

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.