Apogee AD-1000 Reference Standard A/D Converter

Apogee AD-1000
The Apogee AD-1000 is a 20-bit portable A/D converter featuring UV22 encoding, ultra-low jitter clocking, ADAT optical output, and premium mic preamps, providing reference-quality conversion for both studio and mobile recording.

Apogee AD-1000 Reference Standard A/D Converter Details

The Apogee AD-1000 is a professional 20-bit analogue-to-digital converter that delivers exceptional clarity and precision in a portable design. Building on the legacy of the acclaimed Apogee AD-500E, it combines advanced conversion technology with the practical needs of recording professionals. Featuring Apogee’s renowned UV22 encoding, SoftLimit circuitry, and ultra-low jitter clocking, the Apogee AD-1000 provides the highest level of fidelity when transferring analogue sources to digital formats such as CD, DAT, and ADAT.

With dual-stage, triple-servo microphone preamps, the Apogee AD-1000 ensures outstanding transparency and dynamic range, while built-in phantom power allows direct use with condenser microphones. Its 12-volt operation makes it ideal for remote or mobile recording applications, bringing reference-quality conversion to any location. Independent gain and calibration controls, together with clear LED metering and “Over” indicators, make level setting fast and precise.

Connectivity is comprehensive, with ADAT optical outputs and simultaneous AES and SPDIF outputs for multiple recorder support. When set to digital input, AES or SPDIF signals can be converted to ADAT format, offering outstanding flexibility. The Apogee AD-1000 can function as a sync master or slave, locking to external AES, SPDIF, Word Clock, or video signals in NTSC, PAL, or monochrome formats. Apogee’s patented low-jitter clock technology guarantees pure, phase-accurate digital output.

Designed for mastering, field recording, and professional studio use, the Apogee AD-1000 provides a truly uncompromising conversion path from analogue to digital. With its precision oscillator, versatile interfacing, and high-resolution performance, it remains one of Apogee’s most respected portable converters since its release in 1995.

Features

  • 20-bit analogue-to-digital conversion with UV22 encoding
  • Dual-stage, triple-servo mic preamps with phantom power
  • SoftLimit function for maximising levels without distortion
  • ADAT optical, AES, and SPDIF digital outputs (simultaneous)
  • Converts AES/SPDIF to ADAT format when in digital input mode
  • Apogee low-jitter clock technology for pure, stable conversion
  • Digital oscillator for calibration and precision testing
  • Syncs to ADAT Video, AES, SPDIF, Optical, or Word Clock
  • NTSC, PAL, and monochrome video sync support
  • Portable 12 V operation for field or studio use
  • Selectable UV22 encoding for 16-bit mastering
  • Independent mic gain and CAL controls with LED metering

Specifications

Released in: 1995
Made in: U.S.A.
  • Quantisation: 20 bits per sample
  • Frequency response: 20 Hz–10 kHz ±0.025 dB, 10 kHz–20 kHz +0.025/−0.1 dB
  • THD+N: typically −100 dB at full amplitude (48 kHz), −103 dB at −20 dBFS
  • Signal-to-noise ratio: typically −104 dB unweighted, −109 dB A-weighted
  • Crosstalk: better than 110 dB at 1 kHz
  • SoftLimit threshold: −1.5 dB below full scale (adjustable)
  • Metering: green at −12 dBFS, amber at −2 dBFS, red after three consecutive overs
  • Common-mode rejection: better than 110 dB at 100 Hz, 75 dB at 10 kHz
  • External sync range: 32 kHz–54 kHz
  • Internal sample rates: 32, 44.056, 44.1, 44.144, 47.952, 48, 48.048 kHz
  • Sampling accuracy: ±10 ppm
  • Internal clock jitter: typically 30 ps RMS
  • Power input: 12 V DC at 1150–1300 mA (operational range 11.5–15 V DC)
  • Power indicator: flashes below 11.5 V DC
  • Dimensions: 273mm × 141mm × 40mm
  • Weight: 1.3 kg
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