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  • API-505DI

    API 505-DI Direct Input for 500 Series

    Take control of your instrument tone with the API 505-DI Direct Input box. Like the console-based API 205L, the 505-DI is specifically designed to accept a guitar, bass or keyboard direct input while minimizing any loading effect on Hi-Z instrument pickups. Additionally, the 505-DI's Gain Control is used to normalize an instrument's input level, up to a +4 dBu output level.

    Requires a 500 series rack unit to operate


          • Wide Range Gain Control with 55dB of gain
          • Front Panel Hi-Z Input
          • Front Panel Thru routing
          • TONE Control helps customize your sound
          • BRIGHT Switch boosts clarity and presence
          • 10 segment LED VU meter for monitoring output level
          • Peak Output LED Indicator
          • 20 dB pad switch, applies to mic/line/instrument
          • 100K / 400K Switchable Load
          • Traditional API fully discrete circuit design
          • Uses the famous API 2520 and 2510 Op-Amps

          API's unique TONE control reduces potential low end "mud" in the signal, while turning on the BRIGHT switch adds additional clarity if desired. The various combinations of TONE and BRIGHT controls can eliminate the need for any EQ on the instrument while recording, keeping the signal path short and pure.

          This minimal signal path eliminates the need to use a standard direct box, which many times still requires a mic input, equalizer, and a fader to get the signal to a recordable level. The 505-DI is capable of boosting any instrument to a hefty line level without additional amplifiers. Use of the 100K / 400K LOAD switch allows the tone of the pickup to be altered slightly, alternately brightening or darkening the high frequency content. When inserting an instrument with an internal preamp or a line level instrument such as a sampler or a keyboard, the 505-DI offers a 20 dB PAD switch to drop the level without loading, thereby retaining the integrity of the incoming signal.


          Number of Bands: Two
          Filter Type: Passive Shelf
          Filter Frequency Centers: Low: 150 Hz
          High: 8 kHz
          Input Impedance: >380 K Ohms, Un-Balanced
          Output Impedance: 75 Ohms, Transformer coupled, Balanced
          Nominal Levels: -40 dBu to +20 dBu
          Clipping Level: +30 dBu
          Frequency Response: 0, -.4, 30 to 20 kHz
          Noise: 98 dB below +10 dBm output, unweighted. 20-20 kHz
          Distortion: THD: .01% (+4 dB @ 2 K)
          Connector: 15 position .156 sp edge connector
          Power Consumption: ±16 Volts DC, 130mA max at +24 dBu out