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ClearOne XAP 400 Professional Conferencing

ClearOne XAP 400 Professional Conferencing
ClearOne XAP 400 Professional Conferencing
A complete conferencing system featuring the most sophisticated audio technologies available. Leveraging the rich functionality of ClearOne’s flagship XAP 800 system, the XAP 400 includes a built-in telephone interface and power amplifier for standalone conferencing as well as XAP system expansion.
2 Year Warranty
Warranty:2 Year Warranty 
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General Information

Category:Audio Conferencing EquipmentManufacturer:Clearone
Categorization By Manufacturer:Professional ConferencingModel:910-151-201

A complete conferencing system featuring the most sophisticated audio technologies available. Leveraging the rich functionality of ClearOne’s flagship XAP 800 system, the XAP 400 includes a built-in telephone interface and power amplifier for standalone conferencing as well as XAP system expansion.


  • Conference Rooms
  • Boardrooms
  • Courtrooms
  • Distance Learning Facilities
  • Convention Centers and Hotels
  • Training Rooms
  • Telemedicine Facilities
  • Houses of Worship

Brief Info

- Highest quality telephone interface available
- Integrated DTMF (touch-tone) dialing
- RS-232 for stand- alone control
- Selectable auto-answer and auto disconnect
- Expansion bus control allows seamless integration with XAP systems
- Audible ring indicator

Superior Audio Performance

  • Distributed Echo Cancellation® on every mic input
  • Noise cancellation on each mic/line input
  • Full-duplex sound enables participants to speak and listen at the same time without cutting in and out
  • First-mic priority eliminates hollow “tunnel” sound by activating only the microphone closest to the person speaking
  • Four microphone/line inputs, with four additional line inputs
  • Eight outputs
  • 20 Hz-20 kHz bandwidth for full-range audio response
  • Automatic level control and automatic gain control
  • Four input filters on each of four mic inputs; 15 filters on each of four independent processing blocks

Configuration Flexibility

  • Scalable – link multiple XAP units (XAP 400, XAP 800, XAP TH2) for extensive microphone coverage and up to 16 phone lines
  • 25x26 matrix with level control (in .5 dB steps) at each cross point to simplify complex mixing operations; Clear Matrix button easily clears cross points
  • Wide variety of system control options: ClearOne IR Remote, Volume Control, Select Control, 3rd-party control systems such as AMX, Crestron
  • Configuration control through included G-Ware™ software, RS-232 port
  • Enhanced expansion bus, featuring 12 bidirectional audio buses
  • Four mic gating groups allow separation of mics into individual mixer gating groups for greater configuration flexibility

Ease of Use & Control

  • Labels for all inputs, outputs, macros and presets are saved within the unit
  • Front panel control of gain and mute
  • 32 presets that can be executed on-the-fly without disturbing other ongoing preset operations
  • Macro scripting language and recorder simplifies macro creation with point-and-click convenience
  • RAMP serial command for greater control over gain adjustments – no external volume card required

Conferencing Capability

  • Built-in telephone interface and power amplifier
  • Link up to multiple XAP TH2s for 16-line capability
  • Also link to XAP 800 to add conferencing capability

The echo canceller/automatic microphone mixer shall incorporate automatic microphone mixing, distributed echo cancellation, noise cancellation, matrix mixing, signal processing, a 10W power amp,
and a telephone hybrid in a single rack space unit.

The echo canceller/automatic mic mixer shall have eight inputs and nine outputs: four mic/line selectable inputs, four line level inputs, eight line level outputs, and one 10W power amp. Each
mic/line input shall have four selectable filters, adjustable automatic gain control, phantom power, speech leveling, and automatic microphone mixing capabilities. Each mic/line input shall also feature
acoustic echo cancellation with 130ms of tail time and noise cancellation with up to 15dB attenuation, adjustable in 1dB increments. It shall operate in environments with up to 12dB of room gain. Each
input shall also be able to reference any output, any of four global reference buses, or any of four summing virtual references for echo cancellation. The unit shall have four internal and four global
automatic microphone mixers, each with fully adjustable parameters. The microphone mixer shall use PA adaptive, adaptive ambient, chairman override, first mic priority, last mic mode, number of open
mics, and look-ahead gating. The unit shall have front panel control of gain and mute for inputs, outputs, and processing channels.

The echo canceller/automatic mic mixer shall have a 25x26 internal matrix mixer with attenuation at every cross point in .5dB steps. Any input can be routed to any output or multiple outputs. The matrix
shall consist of eight analog inputs/outputs, one speaker output, 12 digital inputs/outputs from the network bus, four inputs/outputs from the processing blocks, and one telephone input/output.
Signal processing shall be provided by four assignable processing blocks, each supporting 15 programmable filters, delay, and compression. The processing block filters shall include: high pass,
low pass, all pass, low shelving, high shelving, notch, parametric EQ, CD horn, Bessel crossover, Butterworth crossover, and Linkwitz-Riley crossover. Filter setup shall be real-time. The unit shall
include a signal generator for pink noise, white noise, and tone sweep capabilities, and shall be assignable to any input on any linked unit.

The unit shall have a 12-channel bi-directional audio bus to pass audio, system control, four channels for echo cancellation referencing, and four channels of NOM for four sub-mixers to other units. The
maximum distance between linked units shall be 80 feet (24 meters). Up to eight units can be linked together.

The echo canceller/automatic mic mixer shall have up to 32 presets and shall allow password protection of presets. Multiple presets can be used simultaneously without interruptions or interference
with other presets. The unit shall feature a macro recorder to create up to 255 macros for simple remote control management of the system. System settings shall be saved in the unit, and shall
include password protection.

The unit shall be set up and operated with intuitive software that allows complete configuration of the system. Additional control shall be handled via RS-232 protocol with communication speeds up to
57,600 baud, RS-485 control panels or remote control, or contact closure.

The unit shall have a frequency response of 20Hz to 20kHz and a signal to noise ratio of 80dB re 0dBu, A Weighted. It shall have a 48kHz sample rate.

The echo canceller/automatic mic mixer shall have an integrated standard 600. analog telephone hybrid with a nominal level of -9 to -15dB. The unit shall provide two RJ-11 connectors for connection
to a telephone line and telephone set. The hybrid shall have telephone line echo cancellation with a tail time of no less than 31ms and noise cancellation with 6–15dB of attenuation. The audio frequency
response of the hybrid shall be at least 250Hz to 3300Hz with a signal to noise ratio of >62dB re max level. DTMF dialing capability shall be provided on the hybrid.

The echo canceller/automatic mic mixer shall allow manual enabling/disabling of telephone calls through buttons on the front panel. Additional settings shall be enabled through configuration software.
This software shall allow selection of either burst adapt or auto adapt hybrid null, receive reduction, selectable receive boost of 0, 3, 6, 9, or 12dB, on/off receive automatic level control (ALC), auto
answer, auto disconnect, loop drop or call progress, DTMF level, dial tone level, audible hook indication, and audible ringer indication. The unit shall be able to store 10 speed dial numbers.

The unit shall have an internal power supply that automatically adjusts between 100-240VAC of power input. The unit shall comply with FCC, CSA, IC, CE, NOM, ACA, SABS, VCCI, and JATE requirements.

The ClearOne XAP 400 is specified.

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  • ClearOne has been in the business for more than 20 years and is the world’s leading provider for audio conferencing technologies and solutions. The company dominates the professional conferencing space with more than 54% of global market share. ClearOne’s products enhance presentation, collaboration, multimedia applications and distance communications while creating natural environments for efficient and effective personal/group communication.
    Some of the popular products and solutions offered include premium conferencing, tabletop conferencing, personal conferencing, AV distribution and control, conferencing microphones and media carts. The CHATAttach 150 Personal/Group speakerphone for medium and large conference rooms, CHAT 50 Personal Conferencing, CHAT 150 USB Personal Conferencing and CHAT 170 Personal Conferencing Speakerphone are among the best products.
    ClearOne is committed to provide the highest quality products ranging from office desktop conferencing to large professional conferencing venues like training centers, courtrooms, auditoriums and boardrooms.

  • Specifications

    Audio Performance

    Conditions: Unless otherwise specified, all measurements are performed with a 20 Hz to 20kHz BW limit (no weighting)
    Frequency Response: 20 Hz to 20 kHz ±1 dB
    Noise (EIN): -126 dBu, 20 kHz BW, max gain,
    THD+N: <0.02%
    SNR: 80 dB re 0 dBu, (A-weighted)
    Dynamic Range: 100 dB (A-weighted)
    Crosstalk <-91 dB re 20 dBu @ 20 kHz channel to channel

    Auto Mixer Parameters

    Number of Open Microphones (NOM)
    PA Adaptive Mode
    First Mic Priority Mode
    Last Mic Mode
    Maximum # of Mics Mode
    Ambient Level
    Gate Threshold Adjust
    Off Attenuation Adjust
    Hold Time
    Decay Rate

    Matrix Mixing Parameters

    25 x 26 matrix
    8 analog in/out
    1 speaker out (10 W)
    12 expansion bus in/out
    4 assignable processing blocks in/out
    1 telco in/out

    Assignable Processing Blocks


    All pass
    Low pass
    High pass
    Low shelving
    High shelving
    Parametric EQ
    CD Horn
    Compressor; adjustable
    Delay adjustable up to 500 ms

    Microphone Input Configuration

    Input Gain Adjust
    Mic or Line Level
    Phantom Power on/off
    Echo Cancellation on/off
    Noise Cancellation on/off

    All Pass
    Low Pass
    High Pass
    Mute on/off
    Chairman Override on/off
    AGC on/off
    Speech Leveler on/off
    Auto Gate/Manual gate
    Adaptive Ambient on/off

    Mic/Line Inputs 1-4

    Push-on terminal block, balanced, bridging
    Impedance: 5 k
    Nominal Level: adjustable -55 dBu, -25 dBu, 0 dBu
    Maximum Level: -35 dBu, -5 dBu, +20 dBu
    Echo Cancellation: 130 ms tail time (works with
    12 dB of room gain)
    Noise Cancellation: 6–15 dB attenuation
    Phantom Power: 24 V, selectable

    Line Inputs 5-8

    Push-on terminal block, balanced, bridging
    Impedance: >10 k
    Nominal Level: 0 dBu
    Maximum Level: 20 dBu

    Outputs 1-8

    Push-on terminal block, balanced
    Impedance: 50
    Nominal Level: 0 dBu
    Maximum Level: 20 dBu

    Telco Line

    POTS (plain old telephone service) or analog extension from a PBX
    A-lead supervision provided

    Telco Set

    Connect analog telephone set
    A-lead supervision provided

    Telephone Audio Performance

    Conditions: Unless otherwise specified,
    all measurements are performed with
    AGC disabled, referenced @ -15 dBm
    on/off the telephone line
    Frequency Response:
    250 Hz to 3.3 kHz ±1 dB
    THD+N: <0.2%, 250 Hz to 3.3 kHz
    SNR: >62 dB re max level
    Pre-emphasis: 4 dB @ 2 kHz

    Telephone Echo Cancellation

    Tail Time: 31 ms
    Null: >55 dB

    Telephone Noise Cancellation

    Noise Cancellation: 6-15 dB attenuation

    Expansion Bus In/Out

    Proprietary Network
    RJ-45 (2), 115.2 kbps, 110k impedance Category five twisted-pair cable 80" (24 meters) maximum cable length between any two XAP
    800s, XAP 400s, or PSR1212s


    DB-9 female 9,600/19,200/38,400 (default)/57,600 baud rate; 8 bits, 1 stop, no parity Hardware flow control on (default)/off


    DB25 female A/B (2)
    Inputs A/B: active low (pull to ground)
    Outputs A/B: open collector, 40 VDC max, 40 mA each
    +5 VDC pins (2) (300 mA over-current protected)

    Remote Panels A/B

    4-pin push-on terminal block
    RS-485 proprietary protocol Category five twisted-pair cable
    1 pair data, 1 pair power and ground +15 VDC
    (300 mA over-current protected)

    Set-up Software


    Power Input Range Auto-adjusting

    100–240 VAC; 50/60 Hz

    Power Consumption

    30 W typical

    Dimensions (L x D x H)

    17.25" x 10.25" x 1.75"
    43.8 x 26 x 4.5 cm


    9.9 lb/4.5 kg dry
    13 lb/5.9 kg shipping

    Operating Temperature

    32 to 100° F/0 to 38° C


    15% to 80%, non-condensing



    Optional Accessories

    XAP 400
    XAP Net
    XAP TH2
    IR Remote Control
    Volume Control Panel
    Select Control Panel
    Button Microphone - Omni-Directional
    Button Microphone - Uni-Directional Delta Microphone
    Tabletop Microphone - Uni-Directional JBL Wall-Mount Speakers
    Digital-to-Analog Telephone Converters

    Part Number

    910-151-201 XAP 400 - 4-channel AEC Microphone Mixer with buitin telephone hybird and amplifier

    Customer Testimonials

    "Excellent for collaborative meetings through Webex or in person. Small and easy to transport. Great for capturing notes for an entire group.Fabulous technology!"

    View All Testimonials >    
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