Benchmark ADC1 24-bit Analog-to-Digital Converter

Unmask Your Audio™ with the ADC1 - a reference-quality, 2-channel 192-kHz 24-bit analog-to-digital audio converter featuring Benchmark's phase-accurate UltraLock™ clock system, advanced multi-function clock input with auto-recognition of AES, SPDIF, Word Clock, or Super Clock, fully-independant auxiliary output, and Benchmark's 9-segment dual-range digital LED meters.

Digital audio created by the ADC1 provides a stunningly faithful recreation of the input signal. The distortion free output is so pristine you can now record detail which was previously masked by jitter induced artifacts and distortion.

Without exceptional recording capability, efforts made with equipment, microphone, mic-placement, and venue selections will be compromised. The ADC1 is essential equipment for mastering, home recording studios, location recording, and broadcast facilities - any place that requires uncolored recording capability.

The ADC1 is designed for maximum transparency. It is well suited for the most demanding applications in studios and mastering facilities.

A rugged and compact half-wide 1 RU enclosure also makes the ADC1 an excellent choice for location recording, broadcast facilities, and mobile rigs.

The ADC1 achieves outstanding performance over a wide range of input levels. Each channel has a 41-detent variable gain control, a 10-turn calibration trimmer, and a 3-position first-stage gain switch (0, 10, and 20 dB).

Each channel has a two-position toggle switch that selects either the 41-detent pot or the 10-turn trimmer. Both the pot and the trimmer have a 20 dB adjustment range.

In combination with the first-stage gain switch, these controls provide exceptional SNR (Signal-to-Noise Ratio) and THD+N (Distortion) performance over a 40 dB adjustment range. The 10-turn calibration trimmer may be used to calibrate the ADC1 to precise studio reference levels. It may also be used to optimize the gain-staging between a microphone preamplifier and the ADC1.

The ADC1 has four digital outputs (1 balanced XLR, 2 coaxial, and 1 optical). The optical output supports AES, ADAT, and ADAT S/MUX. The two coaxial outputs (Main and Aux) can operate simultaneously at different word lengths and even at different sample rates.

The ADC1 has the flexibility to allow simultaneous high-resolution and low-resolution recordings. For example, the main outputs of the ADC1 can be set to 192 kHz 24-bits while the auxiliary output is set to 44.1 kHz 16-bits for a safety backup or CDR demo recording. Both the Main and Aux Outputs originate from the same A/D converter. All outputs are professional format.

Benchmark's exclusive UltraLock™ clock system is 100% jitter immune. The A/D conversion clock is totally isolated from the AES/EBU, SPDIF, ADAT, WC, and super clock interfaces.

This topology outperforms two-stage PLL designs. In fact, no jitter-induced artifacts can be detected using an Audio Precision System 2 Cascade test set. Measurement limits include detection of artifacts as l ow as -140 dBFS, application of jitter amplitudes as high as 12.75 unit intervals (UI) and application of jitter over a frequency range of 2 Hz to 200 kHz.

A poor-quality clock reference will not degrade the jitter performance of the ADC1. In addition, the AES/EBU receiver IC has been selected for its ability to decode signals in the presence of very high levels of jitter. The ADC1 delivers consistent performance under all operating conditions.

The ADC1 is designed to perform gracefully in the presence of errors and interruptions at the clock reference input.

The ADC1 follows an audio-always design philosophy. Audio is present at the outputs shortly after applying power to the unit. The ADC1 will even lock to and AES/EBU signal that has its sample-rate status bits set incorrectly. Sample rate is determined by measuring the incoming signal, and incorrectly set or missing status bits will not cause loss of audio.

The ADC1 has two clock modes: Auto and Internal. Both modes support 44.1, 48, 88.2, 96, 176.4 and 192 kHz.

A multi-format clock input automatically recognizes AES/EBU, SPDIF, Word Clock, or Super Clock signals. This clock input is used to synchronize the Main Outputs. If desired, the Main Outputs may be driven from internal sources. The ADC1 will automatically revert to an internal clock source when the external clock is lost.

The Auto mode allows the ADC1 to lock to an external clock reference. In Auto mode, the ADC1 will follow changes in sample rate, and/or changes in the type of reference signal (AES, SPDIF, word clock, or super clock).

When a clock reference is not available, the Internal mode must be used, and a sample-rate must be selected (44.1, 48, 88.2, 96, 176.4, or 192 kHz). When the Internal mode is active, the ADC1 acts as clock master and will only operate at the selected sample rate, ignoring any signal at the clock reference input. If Internal mode is used, all devices connected to the ADC1 digital outputs will need to be configured to lock to the ADC1. Use the clock output on the back of the ADC1 if the connected devices require word clock.

The ADC1 is phase accurate between channels, and between other ADC1s when locked to AES/EBU or word clock reference signals.

The word clock output from one ADC1 may be connected to the clock input on another ADC1 to expand the number of phase-accurate conversion channels.

The internal power supply supports all international voltages and has generous margins for over and under voltage conditions. It has excellent immunity to noise on the AC line and no external AC filtering is required.

Features
• Two analog-to-digital conversion channels
• Two XLR balanced analog inputs providing high-performance over a 43 dB range
• Two XLR input sensitivity range balanced analog inputs provide high-performance over 43 dB range
• -14 dBu to +29 dBu input sensitivity range (at 0 dBFS)
• Two 0 dB, 10dB, and 20 dB first-stage gain switches (1 per channel)
• Two 41-detent gain controls with a 20 dB range (1 per channel)
• Two 10-turn gain calibration controls with a 20 dB range (1 per channel)
• Benchmark 9-segment dual-range digital LED meters
• Sample Rate LED indicators
• Conversion at 44.1, 48, 88.2, 96, 176.4, and 192 kHz
• Versatile Auto and Internal clock modes
• Multifunction clock input with auto-recognition of AES, SPDIF, Word Clock, or Super Clock
• Word Clock output
• Total jitter immunity with Benchmark's, phase-accurate UltraLock™ technology
• Simultaneous output at two different sample rates
• Simultaneous 16 and 24-bit outputs
• Four digital outputs (1 XLR, 2 Coax, 1 optical)
• AES/EBU, ADAT, and ADAT S/MUX2, and ADAT S/MUX4 output formats
• THD+N = -104 dB, 0.00063% @ -3 dBFS input, SNR 121 dB A-weighted
• Reliable and consistent performance under all operating conditions
• Internal 115 V, 230 V, 50-60 Hz international power supply with very wide operating range
• Low radiation toroidal power transformer significantly reduces hum and line related interference
• Meets FCC Class B and CE emissions requirements

Details

SKU

BADC1

RRP:

~~$3469.00~~

Wicked Price:

$3,250.00 + FREE Shipping

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