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API ASM164 Rackmount Analog Summing Mixer , $3,695.00 - Add to Cart Skip to Product Information

API ASM164 Rackmount Analog Summing Mixer

16-ch Rackmount Analog Summing Mixer with Global 0dB Channel Level Control Bypass, Dual Stereo Program Buses, and Per-channel Inserts
Item ID: ASM164
API ASM164 Rackmount Analog Summing Mixer
$ 3,695 .00
Backordered - More On The Way!

We expect more from API in a week or two. Order today to reserve yours now, risk-free. Estimated October 23, 2026

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API ASM164 Rackmount Analog Summing Mixer
Backordered - More On The Way!

We expect more from API in a week or two. Order today to reserve yours now, risk-free. Estimated October 23, 2026

$ 3,695 .00

Legendary API Sound and Summing Power

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Our Product Research Team

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API’s The Box and The Box 2 summing mixers have been hugely popular at Sweetwater, but not everyone has the room for a console, regardless of size. Enter the API ASM164 rackmount summing mixer, which gives you 16 analog summing channels in a robust 19-inch, 2U chassis. The ASM164 is spec’d with top-drawer components, including API’s signature 2010 and 2120 opamps, and offers convenience features like global 0dB channel level control bypass, dual stereo program buses with flexible channel assignments, and inserts on every channel. Designed for professional project studios, home studios, post-production houses, and recording facilities of all kinds, the ASM164 delivers the legendary API sound and summing power in a compact, high-performance package.

Built for the long haul

Since the 1970s, API’s large-format consoles have been prized for their robust, MIL-Spec build quality. This is borne out by the impressive number of vintage APIs still in daily service around the world. Back in the Golden Age of Analog, pro audio equipment was meticulously assembled and wired by hand using fully discrete circuit designs and military-grade components — factors to which the timelessly superior sound and performance of coveted vintage gear are often attributed. And that is precisely how API builds their consoles and outboard gear today. Your API ASM164 is built to reliably deliver superior performance and sound, session after session, over decades of faithful service.

API: an American pro audio legend

Launched in 1968 by Saul Walker, Automated Processes Inc. began building high-quality consoles for broadcast applications. Soon, the company’s products found favor with recording studios, and a string of industry-leading innovations (including the 500 Series module, the first VCA, computerized console automation, and more) followed. API produced the 2520 amplifier, one of the most famous op-amps in the recording industry, and its consoles and products found homes in such iconic studio facilities as the Hit Factory, Record Plant, Ocean Way, Sunset Sound, and many others. In fact, there are over 700 vintage API consoles around the globe — many of which are still in use. Clearly, the company isn’t resting on its laurels; today’s API products give you the same unbeatable combination of utility, innovation, and stellar sound. That’s why, at Sweetwater, the name API commands reverence.

API ASM164 Features:

  • Rackmount analog summing mixer
  • 16 analog summing channels
  • Balanced, line-level, DB-25 connectors
  • Global 0dB channel level control bypass
  • Proprietary API 2510 input opamps
  • Signature API 2520 opamps and proprietary output transformers
  • Insert send/return per channel
  • 4-segment LED level meters
  • 2 stereo program buses: Mix-A and Mix-B
  • Each channel assignable to Mix-A and/or Mix-B
  • Continuously variable panning with center detent
  • 31-step detented Level control
  • Balanced stereo external input (assignable to Mix-A and/or Mix-B)
  • Analog stereo Output level VU meters
  • Comprehensive rear-panel connections with balanced in/out
  • External power supply
  • Backed by API’s 5-year parts, 1-year factory service warranty

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.