Here is a part of the message I got.
Tuner features and specs.  Sounds like the audible option is an option.


                                   Features

      * Automatically matches antennas from 6 to 1600 ohms impedance
      * Handles 300 watts PEP SSB, 150 watts CW
      * Tune in less than 15 seconds, usually less than 5 seconds
      * Over 2000 non-volatile memories for tuner settings
      * Highly efficient switching L-network matching circuit
      * 1.8 to 30 MHz continuous frequency coverage
      * Adjustable target SWR 1.0 to 2.0
      * Adjustable SWR threshold 0.5 to 1.5
      * Lighted cross-needle SWR/wattmeter with high, low, and auto range
        options
      * Multifunction backlit LCD display with contrast control
      * Built-in frequency counter
      * Numeric readings for SWR, forward and reflected power
      * Bar meters for SWR, forward and reflected power
      * Aural SWR meter with volume control
      * Two SO-239 coax fed antenna connectors
      * Connector for random wire or single wire antennas
      * Built-in 4:1 current balun for balanced line antennas
      * Optional remote control
      * Optional radio interface for compatible radios

                                Specifications

      * Impedance matching range: 6 to 1600 ohms
      * Minimum power for tuning: 5 watts
      * Maximum power while tuning: 100 watts with foldback, 20 watts
        without foldback
      * RF power limit: 300 watts PEP SSB, 150 watts CW
      * Frequency range: 1.8 to 30 MHz continuous coverage
      * Frequency counter accuracy: ±1 kHz across HF bands
      * Frequency counter range: up to 50 MHz
      * Capacitance range: 0 to 3908 pF nominal (256 values)
      * Inductance range: 0 to 24.86 µH nominal (256 values)
      * Relay rating: 16 amp 1000 volts
      * Relay electrical life: 100,000 operations
      * Relay mechanical life: 10 million operations
      * Memory endurance: 1 million write cycles
      * Memory data retention: 100 years
      * Power requirements: 12 - 15 volts DC, 2.1 × 5.5 mm coaxial plug,
        center pin positive
      * Current consumption: 1 amp or less
      * Dimensions (approx.): 10.1 × 2.8 × 9.2 in. (257 × 71 × 234 mm)
        (width/height/depth) not including connectors
      * Weight (approx.): 3.9 lb (1.77 kg)