AudioFire 4

Product Specifications

Echo Digital Audio is proud to use only specifications of production units. While other companies quote specs of their converters alone in laboratory settings, the numbers you see on this page represent the actual unit in your hands. Since people often rely heavily on specs when deciding what gear to buy, we like to bring you numbers that really mean something.

Analog Input

• 2 Neutrik Universal connectors for balanced TRS or XLR:

• Accepts unbalanced signals
• Frequency Response: 10Hz-20kHz, ±0.2dB
• 48V Phantom power on XLR inputs
• Microphone Input Level (balanced XLR)

  - EIN: -129dBu

  - Dynamic Range: 111dB A-weighted

  - THD+n: <0.004% A-weighted

  - Input Impedance: 1.5Kohms

  - Gain Adjustment: +10 to +59dB

  - Max. input level at min. gain: +9dBu

• Guitar/Line Input Level (balanced XLR)

  - Dynamic Range: 110dB A-weighted

  - THD+n: <0.001% A-weighted

  - Input Impedance: 102Kohms

  - Gain Adjustment: 0 to +45dB

  - Max. input level at min. gain: +18dB

• 2 Balanced TRS connectors

• Accepts unbalanced signals
• Frequency Response: 20Hz-20kHz, ±0.1dB
• Dynamic Range: 113dB A-weighted
• THD+n: <0.002% A-weighted
• Linearity: ±0.01dB, 0dBFS to 100dBFS
• Nominal Input Level: +4dBu or -10dBV
• Maximum Input Level: +18dBu

Analog Output

• 4 Balanced TRS connectors
• Frequency Response: 10Hz-20kHz, ±0.1dB
• Dynamic Range: 114dB A-weighted
• THD+n: <0.002% A-weighted
• Nominal Output Level: +4dBu or -10dBV
• Maximum Output Level: +17.2dBu

General Converter Specs

• 128x Oversampling converters
• 24 bit data resolution maintained throughout signal path
• Multiple standard sampling rates supported:  32k, 44.1k, 48k, 88.2k, 96k

S/PDIF Digital Input/Output

• Up to 24 bit resolution
• Coaxial connector
• Consumer/Professional Switch
• Sample rates from 32kHz - 96kHz supported

MIDI

• MIDI input
• MIDI output

Digital Sync

• S/PDIF in/out

Headphone Output

• High quality 1/8” headphone jack
• Volume control on front panel

General

• Digital mixing
• Near zero latency hardware monitoring

Dimensions

• 6”(w) x 5 1/2”(d) x 1 1/2”(h)

Host Interface

• 2 1394a (FireWire) ports

Mic Preamps

• We spec our "studio quality" mic pres at -128 dBu EIN (equivalent input noise) and spec the A/D inputs at 112 dB dynamic range and a THDN of less than .002%, both A-weighted.