• Account
  • View Shopping Cart

Menu Search View Shopping Cart Call Us

API 3122V 2-Channel Mic Preamp  From API

Two channels of API’s signature analog sound featuring the same legendary circuit design found in the 3124V and 3124MV, as well as the 312, 512V, and 512c mic preamps.

API Audio


"Experience the Difference"

Sound Pure's 3-Year Warranty

Our Free 3-Year Warranty!
In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free, Sound Pure 3-Year Warranty, which includes PARTS & LABOR. This high-value perk is our way of providing the ultimate in added value to enhance the unique personal touch our small, dedicated team contributes to each purchase.
Learn more »

Lifetime Support

Free Lifetime Technical Support!
Our small team of dedicated experts is here to help the original purchaser for the lifetime of the product. Why? Because we care about building real relationships with our customers for life and stand behind every product we sell.

Free Shipping

This Product Ships Free!
Products ship from our well-located, climate- and humidity-controlled warehouse absolutely free (inside the continental USA). Low-cost international shipping options exist for most products.
Contact us for details »
Contact us for up-to-date delivery estimate.
Payments as low as $49/mo.

Manufacturer's Description from API

The API 3122V is a compact, high-quality 2-channel preamplifier. It artfully combines API's proprietary transformers and the 2520 op-amp, creating a module that delivers the classic API sound while exhibiting the reliability, long life, and uniformity which is charactersitic of all API products.



- Front panel XLR input / Hi-Z 1/4 inch combo input, rear panel XLR input and output.

- Front XLR input source selector switch (the front XLR mic input is selected when engaged, rear when not

- The unselected XLR input source is disconnected from the preamplifier when not engaged

- The MIC switch must be engaged for either front or rear microphone input operation

- 48V phantom power is automatically removed from the unselected mic input

- Switchable input selector: when engaged -XLR input active, when disengaged - Hi-Z 1/4 inch input active

- Gain control: Mic preamp with gain range +34 dB to +68 dB

- Instrument / line preamp with gain range +14 dB to +48 dB

- 48V phantom switchable power

- Polarity switch inverts polarity of mic input signal

- Pad switch reduces input signal by 20dB

- Variable output level control knob (full clockwise rotation = unity gain)

- High-pass filter switch (50Hz, 12dB octave)

- 3:1 output transformer tap selector: when engaged - reduces output gain ratio from 1:3 to 1:1 (appx. 10 dB) when disengaged - output gain ratio 1:3

- VU meter for monitoring output level


API Audio

About Manufacturer

API (Automated Processes, Inc.) is world famous for its all-discrete audio products: studio and broadcast mixing consoles, and a full line of rack mount mic preamps, equalizers and processors. It all began with a dream. It was 1968. The company: Automated Processes Inc., formed by men with a vision. Best known for their now legendary "2520 amplifier", this unique amp has been and will continue to be the heart of all API discrete products. It continues to provide reliability and sonic purity unmatched by the competition. The resulting console met the needs of the music, commercial and broadcast industry. API became the leading audio broadcast console manufacturer for radio and television networks and high profile stations. In addition, recording studios, large and small, began using API.....and receiving rave reviews from engineers and producers. There are over 700 API consoles across the nation and around the world, including the three major networks. Over thirty years later, many of these consoles are still in daily use in some of the most prestigious recording and broadcast facilities in the world because, to date, there are few, if any consoles of equal sound quality at a cost-effective price.


Input Impedance:

- Mic: 1500 Ohms

- Hi-Z: 470 kOhms unbalanced

Output Impedance: Less than 75 Ohms, transformer balanced

Nominal Levels: XLR channel output: +4dBu

Frequency Response: +/-0.5 dB, 20 Hz to 40 kHz


- Mic: -128 dB

- Hi-Z actual: -106 dB

Gain Rance:

- Mic input 14 dB min., 68 dB max

- Hi-Z input -6 dB min., 48 dB max

Metering: VU calibrated for XLR output, 0VU = +4dBu PEAK LED calibrated to +18dBu at 312 amp output


- Front: two female mic input XLRs, two Hi-Z instrument inputs

- Rear: Two female mic input XLRs, two male line output XLRs

Power Consumption: 8 Watts

Size: 23.25" X 6.5" X 16.5"

Actual Weight: 9 lbs

Shipping Weight: 13 lbs