Provides a professional amplifier solution for commercial applications that saves energy, space, and money. Unique modular design is super easy to configure and ships with everything required to enable surface mounting, rack mounting, and ganging multiple units together.

Price: $575.00
    Availability: In Stock
    Usually ships In 24 - 48 hours

    Item #: AMP-225


    Finally, a space saving, energy efficient, commercial grade, professional performance amplifier solution that’s totally configurable yet remarkably straightforward. Whether you need a stereo amp that mounts on a wall or under a table, or a multichannel rack mount amp with multiple output types and power levels, Crestron® modular amps are astoundingly simple to specify and install in any configuration you require.

    All-Inclusive Modular Design
    Crestron modular amplifiers are offered in a range of output power levels, with single and dual-channel models available, and with options to address either Lo-Z (4/8 Ω) or Hi-Z (70 or 100 Volt) speaker types. (The AMP-225 model supports Lo-Z only.) Each model is housed in either a quarter- or half-width rack-mountable form factor that can be installed individually or ganged together in a single rack space. (The AMP-225 model is quarter-width.) Every model ships complete with all the hardware required for installation of the unit by itself or in combination with any other unit(s). Rack and surface mount kits are included, so there are no other mounting accessories or rack shelves to purchase.

    Whether mounting in a rack, attaching to a flat surface, or simply placing on a shelf, it’s easy to combine multiple units into a single assembly. Just remove a couple of screws, slide the side panel off and attach it to the next unit, slide the two units together, and reinstall the screws. The complete multichannel amp assembly is sturdy and solid, with the look of a full-space unit. Attach the appropriate sized rack ears or surface brackets and it’s ready to mount.

    4/8Ω Output
    The AMP-225 is a dual channel amplifier, conservatively rated at 25 Watts per channel, with “Lo-Z” outputs to drive 4 or 8 Ohm speakers. Output wiring is facilitated using detachable terminal blocks. Balanced and unbalanced inputs are provided for connection to one stereo or two mono source(s) via a detachable terminal block or RCA connectors.

    Solid & Efficient Performance
    All Crestron modular amps are engineered to deliver exceptional performance and reliability with low distortion, low noise, and high power headroom. Advanced Class D technology maximizes efficiency to reduce power consumption and heat dissipation. An internal universal power supply with power factor correction ensures consistent performance at varying line voltages.

    Convection Cooled
    The ultra-efficient design of the AMP-225 ensures cool running operation without the use of internal fans. This means there’s no fan noise to disturb nearby listeners and no moving parts to break down. Cool operation also helps to ensure long term reliability. The AMP-225 is high-density stackable with other Crestron modular amps, allowing multiple units to be installed vertically in an equipment rack without extra ventilation space in between.

    Fully Protected
    The AMP-225 features comprehensive protection against overheating, shorted or overloaded speaker lines, excessive input signals, and other faults. Built-in clip limiting prevents extreme output signals and distortion that can damage the speakers or amplifier. In the case of a shorted speaker line or overheating condition, both outputs mute automatically until the fault condition is resolved. In the event of a prolonged fault, such as an internal component failure, the outputs mute instantly and the amplifier shuts down.

    ENERGY STAR® Certified
    Its energy-efficient design enables the AMP-225 to meet demanding ENERGY STAR requirements. Crestron modular amps, like the AMP-225, allow organizations to fulfill their green initiatives without compromising on audio performance. In addition to its high efficiency under operation, the AMP-225 draws no added inrush current during power-up, thereby reducing AC circuit requirements and allowing multiple units to be connected to a single switched circuit. To reduce energy usage further, the AMP-225 automatically enters a low-power standby state if no input signal is detected on either channel for 25 minutes, and returns to full operation within a half-second the instant an input signal is detected.

    Key Features
    • ENERGY STAR® certified power amplifier
    • Ultra-efficient space-saving design
    • Two channels, 25 Watts per channel at 4/8Ω
    • Quarter-width, 1 RU form factor
    • Surface or rack mountable
    • Gangable with other Crestron® modular amps
    • All mounting and ganging hardware included
    • High-density stackable
    • Convection cooling — no mechanical fans
    • Comprehensive fault and speaker protection
    • Clip limiters
    • Low noise, low distortion, high headroom
    • Low power consumption
    • Automatic low-power standby
    • Balanced and unbalanced inputs
    • Detachable terminal blocks for easy servicing
    • Front panel level adjustments with tamper-preventive magnetic cover
    • Front panel power/standby, fault, and signal/clip indicators
    • Internal universal 100-240V power supply


    Input Signal TypesBalanced or unbalanced analog line-level
    Output Power25 Watts per channel @ 4-8 Ohms
    Frequency Response20 Hz to 20 kHz ±0.5 dB
    THD+N<0.1% at full rated output power
    S/N Ratio>100 dBA, 20 Hz to 20 kHz, balanced
    Crosstalk-75 dB at 1 kHz
    Input Sensitivity1.23 Vrms, +4 dBu, balanced;
    0.316 Vrms, -10 dBV, unbalanced;
    For full rated output power
    Go To Sleep Time25 minutes with no signal present
    Wake Time0.5 second typical
    Wake Threshold5 to 20 mV typical
    ProtectionClip limiter, over current, under voltage, over temperature, DC offset, extreme high frequency
    SPEAKER OUT 1 – 2(2) 2-pin 7.62 mm reversed gender 20A detachable terminal blocks;
    Power amplifier outputs;
    Wire Size: Terminals accept up to 12 AWG (3.31 mm²)
    AUDIO IN 1 – 2
    (2) RCA connectors, female;
    Unbalanced line-level audio inputs;
    Maximum Input Level: 2.24 Vrms, +7 dBV (+9.2 dBu)
    AUDIO IN 1 – 2
    (1) 5-pin 3.5 mm detachable terminal block;
    Balanced line-level audio inputs;
    Maximum Input Level: 7.75 Vrms, +20 dBu;
    Input Impedance: 20k Ohms
    G(1) 6-32 screw;
    Chassis ground lug
    100-240V~1A 50/60 Hz(1) IEC 60320 C14 main power inlet;
    Mates with removable power cord, included
    Controls & Indicators
    PWR(1) Bi-color green/amber LED, indicates operating power supplied from AC line power, turns green while operating and amber when in standby
    FAULT 1 – 2(2) Red LEDs; each indicates an over-temperature or over-current fault on the corresponding channel
    SIGNAL 1 – 2(2) Bi-color green/red LEDs, green indicates input signal presence and red indicates input signal clipping on each corresponding channel
    Input Level 1 – 2(2) Screwdriver-adjustable rotary controls, each adjusts the input attenuation level for the corresponding channel, tamper-preventive magnetic cover included
    Main Power1 Amp @ 100-240 Volts AC, 50/60 Hz
    Power Consumption17 Watts, driven at 1/8th output power;
    8 Watts, idle;
    <0.5 Watt, standby (sleep)
    Temperature41° to 104°F (5° to 40°C)
    Humidity10% to 90% RH (non-condensing)
    ChassisMetal, convection-cooled (fanless), vented front and rear
    Front PanelMetal, black finish with polycarbonate label overlay
    MountingFreestanding, surface-mount, or 1/4-width 1 RU 19-inch rack-mountable; gangable with other Crestron modular AMP series products (adhesive feet, surface mounting kit, ganging kit, and rack mounting kit included)
    Height1.74 in (45 cm) without feet;
    1.82 in (47 mm) with surface kit
    Width4.33 in (110 mm);
    5.43 in (138 mm) with surface kit;
    19.00 in (483 mm) with rack kit
    Depth10.46 in (266 mm)
    1.9 lb (0.9 kg) without mounting kits;
    2.2 lb (1.0 kg) maximum with surface or rack kit
    ENERGY STAR, ErP (1275/2008/EC), UL 60065, FCC Class A commercial use