API 3122V

API 3124V The API 3124V is a professional 4-channel microphone preamplifier in a 19-inch rack format, based on the legendary API 312 circuit used in classic API consoles from the 1970s. It combines discrete Class-A electronics with the iconic API 2520 op-amps and proprietary transformers, delivering the distinctive API sound known for punch, clarity and fast transient response. Each of the four channels features independent gain and output level controls along with comprehensive signal-processing functions. A defining feature of the 3124V is its variable output level control, allowing engineers to drive the input stage harder for transformer saturation while keeping the output level optimized for converters or downstream gear. Additional controls include -20 dB pad, polarity reverse, 48 V phantom power and a switchable 3:1 transformer output tap, providing flexible gain structure and tonal variation. Sound Character The API 3124V delivers the classic fast, punchy and forward API tone widely used in professional studios. Its discrete circuitry and transformer design provide excellent transient detail, strong midrange presence and tight low-frequency response, making it especially popular for drums, guitars and rock vocals. Highlights ✔ 4-channel microphone, line and instrument preamp ✔ classic API 312 circuit design ✔ discrete electronics with API 2520 op-amps ✔ proprietary API input and output transformers ✔ variable output level control per channel ✔ switchable 3:1 output transformer tap ✔ -20 dB pad, polarity reverse and phantom power ✔ front-panel Hi-Z instrument inputs ✔ LED metering per channel ✔ 19-inch rackmount design (1U) Technical Specifications ✔ device type: 4-channel mic / line / instrument preamp ✔ gain range: up to approx. 65 dB ✔ inputs: 4 × XLR mic, 4 × ¼" Hi-Z instrument ✔ outputs: 4 × XLR line outputs ✔ controls: pad, polarity, phantom power, transformer tap ✔ format: 19" rack / 1U ✔ power: internal power supply (IEC)

API 5500 Dual Equalizer The API 5500 Dual Equalizer is a professional 2-channel 4-band equalizer in 19-inch rack format, bringing the classic sound of the legendary API 550 series into a modern stereo outboard unit. The design is directly based on the famous API 550A and 550B equalizers, combining their musical EQ curves with additional stereo and mastering functionality. Each channel uses discrete API circuitry with legendary API 2520 op-amps and transformer-balanced output stages, delivering the recognizable API sound with excellent headroom, transient clarity and strong musical presence. The equalizer provides four fully selectable frequency bands per channel, each using API’s well-known proportional-Q circuit. As boost or cut increases, bandwidth narrows automatically for highly musical tonal shaping. An additional stereo-link mode allows precise matched stereo processing for mix bus and mastering applications. Sound Character The API 5500 delivers the classic musical, punchy and direct API EQ sound. Midrange remains focused and powerful, lows stay controlled and highs sound open and natural. On stereo buses the EQ produces highly musical boosts without sounding artificial. It performs exceptionally well on mix bus, mastering, drums, vocals and subgroup processing. Highlights ✔ 2-channel 4-band equalizer in 19-inch rack format ✔ based on API 550A / 550B circuitry ✔ discrete API 2520 op-amp design ✔ 4 bands per channel ✔ classic proportional-Q circuit ✔ stereo-link mode ✔ switchable ±12 dB / ±6 dB range ✔ ideal for mixing and mastering ✔ hard bypass per channel ✔ balanced XLR connectivity ✔ 19-inch rack / 2U

API 2500+ The API 2500+ is a professional reference-grade stereo bus compressor, based on the legendary API 2500 compressor and designed for advanced mixing, mastering and bus compression applications. The “Plus” version expands the classic API concept with additional sidechain and routing functions for modern production workflows. Its circuit uses classic API discrete technology with API 2510 and API 2520 op-amps plus transformer-balanced output stages, delivering the recognizable API sound known for punch, precision and musical density. A defining feature is the patented THRUST® sidechain circuit, which reshapes detector response to keep low frequencies tight and controlled without over-triggering compression. The compressor also offers API’s classic Old / New compression modes, allowing selection between vintage-style feedback compression and modern feed-forward behavior. Sound Character The API 2500+ delivers the signature fast, punchy and energetic API compression sound. It preserves transient detail while adding cohesion, punch and density to stereo mixes. On the mix bus it provides the classic API glue without sacrificing openness or clarity. Low frequencies remain controlled and powerful thanks to the THRUST® circuit. Highlights ✔ professional stereo bus compressor for mixing and mastering ✔ discrete API 2510 / 2520 amplifier design ✔ THRUST® sidechain circuit ✔ Old / New compression mode ✔ selectable knee characteristics ✔ variable attack and release controls ✔ adjustable stereo link control ✔ high-pass sidechain filter ✔ external sidechain insert ✔ hard relay bypass ✔ precision analog metering