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Everything In Music Since 1958
Everything In Music Since 1958

Warm Audio WA-12 MKII Discrete Microphone Preamp W/DI

Out of Stock
Original price $469.00 - Original price $469.00
Original price $469.00
$469.00
$469.00 - $469.00
Current price $469.00
About Inventory Status


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In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions


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Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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Get A Completely Discrete, High Voltage, Dual-Transformer Microphone Preamplifier Designed For An Exciting Sonic Performance - The Warm Audio WA-12 MKII W/DI Discrete Microphone Preamp

A lot of preamps on the market do a good job of raising the volume of mics and instruments. Unfortunately, many pres are doing only that, raising volume. The “Super clean” designs of today often leave the signal exiting the preamp sounding much the same as it did entering it.

If you are looking for a preamp to improve and shape your signal you will most definitely love the WA12 MKII. The WA12 MKII is designed to transform plain instruments and vocals into exciting tone. If your mixes lack depth, struggle to sound alive, or are just missing that professional touch you’ve always wanted, there is a good chance you will love the WA12 MKII.

PACKED WITH PERFORMANCE. RAISING THE VOLUME.

 The WA12 MKII is a completely discrete, high voltage, dual-transformer microphone preamplifier designed for high gain (+71dB), high headroom, low noise, and an exciting sonic performance – great for all types of recording applications. A high quality mic preamp is one of the most critical pieces needed to achieve the elusive ‘larger than life’ sound, and the WA12 - 500 MKII is more than capable of delivering.  

The WA12 MKII is based around a discrete op-amp, the X731, which is our own reproduction of the vintage classic Melcor 1731, considered by some to be the warmer predecessor to the modern 2520-style op-amp. The X731 can achieve vibrant, clean and lifelike tones; but can also be driven into mild saturation at much higher gain levels. The effects can be subtle, but very pleasing to the ear. The WA12 MKII can also accept any discrete op-amp on the market which conforms to the +/-16v, 2520 pinout standard.

PREMIUM COMPONENTS IN EVERY WARM AUDIO PRODUCT.

When developing the WA12-500 MKII our ears played a big part in the design process. Using CineMag USA transformers and an all discrete signal path ensured that the WA12-500 MKII would have the building blocks to compete with the best preamps on the market. We are very proud to offer such a robust/professional design in a small and affordable package. 



  • Utilizes premium grade input and output USA CineMag transformers.
  • 71db of Gain, fully discrete signal path.
  • Utilizes a discrete 6-pin socketed 1731 style opamp.  Can be replaced with other 6-pin "2520 foot-print" opamps for varying tone/flavor.
  • TONE button – Switches the input impedance from 600 ohms to 150 ohms.  Changes the tone of both the mic and HI-Z inputs.
  • 2 Meg Ohm True HI-Z input on front panel. Sends instrument signal through entire circuit including both Cinemag Transformers and the discrete opamp. Great for guitars, bass, keyboards and other instruments that have a 1/4″ output jack.
  • Mic level balanced input: XLR.
  • Balanced outputs: XLR and 1/4″/TRS.
  • 48 volt Phantom Power.
  • Output attenuation control (after the CineMag output transformer) allows for driving the preamp and transformers into saturation.
  • LED Meter gain indication.
  • 20db pad.
  • External power plug.


Manufacturer: Warm Audio
Model: WA12 MKII
SKU: I443263-N-0-WHXA
UPC: 638142859301


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Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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