Cyrus Pre2 DAC - User Manual

The Cyrus Pre₂ DAC is a high-quality pre-amplifier and digital-to-analogue converter designed for audio enthusiasts. It serves as the central control unit for a hi-fi system, offering extensive connectivity and advanced features for optimal sound reproduction.

Function Description

The Pre₂ DAC functions as a versatile pre-amplifier, managing audio signals from various sources before sending them to a power amplifier. Its integrated DAC (Digital-to-Analogue Converter) allows it to process digital audio signals from sources like CD players, streaming devices, and computers, converting them into analogue signals for playback. The device supports both analogue and digital inputs, making it compatible with a wide range of audio equipment. It also features a Zone 2 output, enabling multi-room audio setups.

Important Technical Specifications

Power Supply:

• Voltage: As plate on rear of unit
• Power Consumption:
  • Standby: <1W
  • Maximum: 18W
• Safety Compliance: CE
• EMC (230V): CE
• FCC (115V): FCC

Enclosure:

• Dimensions (WxHxD): 215 x 75 x 365mm
• Weight: 4.0kg
• Material: Die cast chassis

Analogue Audio Performance:

• Input Sensitivity: 500mV
• Input Impedance: 40kΩ
• Frequency Response (-3dB): 0.1Hz, >50kHz
• Signal to Noise Ratio (unWtd): 108dB
• Output Voltage: 1V
• Max output voltage: 3V
• Output Impedance: 120Ω
• THD+N, 1kHz: <0.002%

Digital Audio Performance:

• Input Voltage: 500mV pk-pk
• Input Impedance: 75Ω
• Sample Rate Range (coaxial and optical): 32k - 192k
• Sample Rate Range (USB): 32k - 48k
• Audio Formats: PCM stereo only
• S/N Ratio (Pre-out, 0dB FS): >100dB
• THD+N (Pre-out, 0dB FS): <0.004%

The device is designed to meet stringent safety and electromagnetic compatibility standards, ensuring reliable and safe operation. Its robust die-cast chassis contributes to its durability and helps in minimizing unwanted vibrations.

Usage Features

Connectivity: The Pre₂ DAC offers a comprehensive array of inputs and outputs:

• Analogue Inputs (6): For connecting traditional audio sources like CD players, tuners, and phono pre-amplifiers.
• Digital Inputs (10): Including coaxial, optical, and USB inputs for digital audio sources.
• Pre-Amplifier Outputs (2): For connecting to power amplifiers.
• Zone 2 Output: Allows for a second independent audio zone.
• Tape/Disc Output: For recording.
• MC-BUS System: Enables integrated control with other Cyrus components.
• PSX-R/PSX-R₂ Connection: For external power supply upgrades.
• Headphone Socket: For private listening.

Configuration and Setup: The device features a user-friendly menu system accessible via the front panel controls or the remote handset. Users can customize input names, adjust input sensitivity offsets, and select display modes (small, large, or bargraph) to suit their preferences. The 'Input auto-hide' feature allows users to hide unused inputs from the display, simplifying navigation.

Operation:

• Power Control: The standby key on the front panel controls power. The standby light indicates the power status (green for standby, red for off).
• Input Selection: Inputs can be selected using the front panel INPUT SELECT keys or the remote control. The display shows the currently selected input and its sample rate.
• Volume and Balance: Volume is controlled by the rotary control on the front panel or the remote. Balance can be adjusted to compensate for speaker placement or room acoustics.
• Mute Function: A dedicated mute key on the front panel and remote allows for instant muting.
• Headphone Listening: Connect headphones to the front panel socket. The volume control adjusts headphone output.
• Playing Music in Zone 2: The Zone 2 output allows for simultaneous playback in a second room. Users can select a different source for Zone 2 from the main system's available inputs.
• Tape/Disc Playback and Recording: The device supports connecting a tape recorder for playback and recording.

Remote Control Operation: The supplied remote control provides full control over the Pre₂ DAC and other Cyrus components (amplifiers, CD players, audio streamers, tuners, DVD players). It features dedicated keys for controlling various Cyrus devices, simplifying system operation. The remote control also has a backlight for ease of use in dim lighting. Batteries are easily fitted and replaced. The remote supports a learning process to program commands for TV or Satellite receivers, allowing for a single remote to control multiple devices.

Cyrus Amplifier and CD Player Commands: The remote includes specific commands for controlling Cyrus amplifiers and CD players, such as volume control, input selection, track navigation, and playback functions.

Cyrus Audio Streamer and Phono Signature Commands: The remote also supports commands for Cyrus Audio Streamers and the Cyrus Phono Signature, enabling integrated control within a Cyrus system.

Learning TV and Satellite Commands: The remote can be programmed to control TV and Satellite components. This involves a learning process where the remote "learns" commands from the original TV/Satellite remote. This feature allows users to consolidate their remote controls.

Maintenance Features

Servicing: Cyrus recommends that servicing be performed by qualified personnel. Unauthorized repairs can void the warranty and pose safety risks. The product service centers are equipped to handle repairs and provide genuine replacement parts. Regular checks for power cord damage and liquid spills are advised.

Product Service Centres: Contact details for authorized Cyrus service centers can be found on the Cyrus website.

Cleaning: Unplug the product from the mains before cleaning. Use a soft, dry cloth; avoid liquid cleaners or aerosols.

Water and Moisture: The device should not be exposed to water or excessive moisture. It should not be used near bathtubs, sinks, swimming pools, or in damp environments.

Heat: The product should be situated away from heat sources such as radiators or stoves. Adequate ventilation is crucial to prevent overheating.

Ventilation: Ensure proper ventilation by placing the unit on a flat, stable surface and avoiding placement in enclosed spaces like bookshelves or cabinets without proper airflow.

Object or Liquid Entry: Prevent objects or liquids from entering the unit, as this can cause electric shock or fire.

Accessories: Do not place the product on unstable carts or stands. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer.

Batteries: Use only specified battery types. Do not expose batteries to excessive heat.

Polarised Connector (Canada and USA): To prevent electric shock, ensure the wide blade of the plug is fully inserted into the outlet. Do not use with extension cords unless the plug can be fully inserted.

Access to the Mains Plug: The mains plug should always be accessible to disconnect the product from the mains supply.

Ferrite Clamp: A hinged ferrite clamp is included for the power cable. This clamp helps to reduce undesirable 'noise' present in the mains supply, improving audio performance. It should be fitted around the cable, 20mm from the plug moulding.

Connecting to the AC Mains Supply: Connect the supplied power cable to the power inlet on the rear panel of the amplifier. Ensure the mains plug is accessible at all times.

Troubleshooting Guide: A troubleshooting section in the manual provides solutions for common issues such as no sound, no digital sound, no sound from one loudspeaker, spurious noise, and remote control not working. It advises checking connections, power supply, mute status, and source selection.

Warranty: The product comes with a two-year warranty. The warranty covers manufacturing defects but excludes damage caused by neglect, accident, misuse, wear and tear, or unauthorized modifications. Proof of purchase is required for warranty claims.

WEEE (Waste Electrical and Electronic Equipment): The product is marked with the crossed-out wheeled bin symbol, indicating that it should not be disposed of with household waste. It should be handed over to a designated collection point for recycling.