Benchmark ADC1USB Analogue to Digital Converter, Black with Rack Ears

£1,895.00 RRP £1,943.33 (including VAT @ 20%)

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Can be delivered to you on: 10th December 2016
(Select SATURDAY delivery in your basket)
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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

  • Software
  • CDs & DVDs
  • In-ear Monitors
  • Earplugs and Ear Protection
  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
  • Mouth / Lip Care Products

We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Product Ref: 39496

  • Reference-Quality Analogue-to-Digital Converter
  • 2 Channel, 192kHz/24-Bit Audio
  • Jitter-Immune UltraLock Technology
  • Precision Analogue Circuitry
  • Black Finish with Rack Ears

Benchmark ADC1USB Analogue to Digital Converter, Black with Rack Ears

The Benchmark ADC1 USB analogue-to-digital converter delivers faithful digital audio that retains the life of the original music with no digital artifacts. Consistent performance and reference-quality conversion, all in a compact package finished in Black with rack ears for mounting.

Product Ref: 39496

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Buy on finance from £51.89 per month Finance from £51.89 per month  

  • 15.9%
  • £65.72
  • £2,365.92
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

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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.


  • 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


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