Benchmark ADC1USB Analogue to Digital Converter, Black with Rack Ears

Full Description

Consistent, High-Quality Conversion

The ADC1 USB features Benchmark's UltraLock™ system, which delivers consistent, high-quality conversion even when slaved to a poor-quality external clock. The clock input automatically recognises AES/EBU, S/PDIF, Word Clock or Super Clock sources, and UltraLock gives it unsurpassed jitter immunity.

Accurate Channel Matching

The high-performance analogue circuit delivers low-noise, low-distortion, high-bandwidth performance over a wide gain range. The gain and calibration controls allow for accurate channel matching to easily capture exact imaging, difficult transients and subtle details.

High-Resolution Output

The five digital outputs can operate simultaneously at up to three independent sample rates, and one of the coaxial outputs can be configured for 16-bit TPDIF dithered output. This means you can simultaneously record to a CDR while also recording high-resolution to a digital recorder and a DAW. You can create backup or reference recordings while feeding high-resolution output to your primary recording devices. And Benchmark's Advanced USB technology provides a bit-transparent computer interface that streams at up to 96kHz/24-bit without installing any drivers.

Integrated Rack Moutability

This model of the ADC1 USB is designed for rack mounting. It occupies half of a rack space, and can be mounted alone using Benchmark's rack mount kit, or in conjunction with another Benchmark module using the rack mount coupler.

Features

• Two channels of analog-to-digital conversion
• Two XLR balanced analog inputs providing high-performance over a 44 dB range
• -15 dBu to +29 dBu input sensitivity range (at 0 dBFS)
• First-stage gain switches (1 per channel): 0 dB, 10 dB and 20 dB
• 41-detent variable gain controls (1 per channel) with a 24 dB gain range
• 10-turn gain calibration controls (1 per channel) with a 24 dB gain range
• 9-segment dual-range digital LED meters
• Sample rate LED indicators for ‘Main’ and ‘Aux’ digital outputs
• Sample rate for USB output is determined by computer (D.A.W./software)
• Conversion at 44.1, 48, 88.2, 96, 176.4, and 192 kHz
• USB output resolution 24 bits at 44.1, 48, 88.2, or 96 kHz
• Versatile external 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 of up to three different sample rates
• Simultaneous dithered 16 and 24-bit outputs
• Five digital outputs (1 XLR, 2 Coax, 1 Optical, 1 USB)
• 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 interference
• Meets FCC Class B and CE emissions requirements

Specifications

Analogue Audio Inputs:

• Number of Inputs (Balanced): 2
• Connector: Gold-Pin Neutrik™ Female XLR
• Impedance: 200kOhms
• Sensitivity: -14dBu to +29dBu (at 0dBFS)

Clock Reference Input:

• Format: Auto-Detect AES/EBU, Word Clock and Super Clock (256x)
• Impedance: 75 Ohms
• Sensitivity: 150mV AES, 200mV Word Clock, 750mV Super Clock
• Transformer Coupled: Yes
• DC Blocking Capacitors: Yes
• Transient and Over-Voltage Protection: Yes
• Jitter Attenuation Method: Benchmark UltraLock

Wordclock Reference Output:

• Impedance: 75 Ohms
• Level: 5Vpp, 2.5Vpp into 75Ohms
• Transformer Coupled: No
• DC Blocking Capacitors: No
• Transient and Over-Voltage Protection: Yes

Digital Audio Outputs:

• Number of Digital Outputs:
  • 1 x XLR Main
  • 1 x TOSLINK Main
  • 1 x BNC Main
  • 1 x BNC Aux
  • 1 x USB
• Connectors: Gold-Pin Meutrik™ Male XLR
• Number of Audio Channels: 2
• Main Output Word Length: 24 Bits
• Main Output Sample Frequencies: 44.1, 48, 88.2, 176.4 or 192kHz
• Aux Output Word Length: 16 or 24 Bits
• Impedance: 110 Ohms XLR, 75 Ohms BNC
• Level: 4Vpp into 100 Ohms XLR, 1Vpp into 75 Ohms BNC
• Transformer Coupled: Yes
• DC Blocking Capacitors: Yes
• Transient and Over-Voltage Protection: Yes