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API 3124V 4-channel Microphone Preamp , $3,295.00 - Add to Cart Skip to Product Information

API 3124V 4-channel Microphone Preamp

Discrete 4-channel Mic/Line/Instrument Preamp with 65dB Gain Range, Variable Output, and Transformer Tap Selection
API 3124V 4-channel Microphone Preamp
API 3124V 4-channel Microphone Preamp

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API 3124V 4-channel Microphone Preamp
In Stock!

The API 3124 Gets an Upgrade

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The API 3124V adds variable output and transformer tap selection to the company's popular 3124+ 4-channel mic/instrument preamp. The 3124V packs legendary API console sonics and performance into an easy-to-use, premium-quality rackmount unit. Whether you're capturing vocals or plugging in an instrument, you'll definitely appreciate the 3124V. It uses the same preamp circuit found in API consoles, plus the same input and output transformers you'll find throughout the API range — a recipe for classic API sound. Want instant vintage character? A 3:1 output transformer tap selection lets you switch in additional harmonic saturation. This preamp provides a very robust gain range, making it useful for a variety of input sources. Equally at home onstage, in the broadcast rig, and in the recording studio, the API 3124V will serve you well.

Ideal for a variety of audio applications

API's commitment to quality means the 3124V provides a stellar front end to a wide variety of audio applications. The 3124V is designed with the professional engineer in mind, giving you four channels of premium preamp performance, while keeping the size and price at a reasonable level. Not only will it make your mics sound incredible, the unit's convenient front-panel hi-Z instrument inputs are engineered with the headroom to handle your active bass or hot outputs from keyboards and other gear. It's equally at home in commercial recording studios, mobile ENG or recording rigs, at front of house, or in your personal studio.

Premium API components inside

This preamp gives you the great sound and performance characteristics that make API gear so popular among studios, engineers, and musicians. The 3124V utilizes the same microphone preamp circuit that is used in all API consoles. It uses the RE-115 K mic input transformer and the same output transformer that is found throughout the API product line. All four mic inputs of the 3124V are powered by a 48-volt phantom power supply — front panel switchable for each channel. Also provided are front-panel, per-channel polarity-reverse switches and 20dB pad switches that affect both Mic and hi-Z inputs.

Perfect for mics and instruments alike

You get plenty of headroom from this pre, whether you're plugging in a mic or an instrument. The 3124V can provide up to 65dB of gain, and with variable output you can optimize your gain staging. The front-panel hi-Z inputs routes directly to the op-amp, perfect for amplifying low-level inputs like guitar and bass without using a direct box or matching transformer. These inputs can take levels as high as +20dBu, making them ideal for active pickups, keyboards, and other high-level gear. The 3124V sports rear-panel XLR mic pre inputs and channel outputs.

API 3124V 4-channel Mic/Line/Instrument Preamp Features:

  • Legendary API discrete circuitry
  • Uses classic API 2520 op-amps
  • Variable-output level control
  • 3:1 output transformer tap selection
  • 4 rear-panel female XLR mic inputs
  • 4 front-panel 1/4" hi-Z instrument inputs
  • Front-panel polarity-reverse switches, per-channel
  • Front-panel -20dB pad switches, per-channel
  • Front-panel mic/instrument switches, per-channel
  • Front-panel 48V power switches, per-channel
  • Rear-panel XLR channel outputs

Warranty Info

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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.