Crestron AMP-X300 X-Series Amplifier

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Product Type: Amplifier

Vendor: Crestron


The Crestron AMP-X300 is a high performance, space saving, energy efficient, professional grade amplifier solution that is totally configurable, yet simple to use. 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, the AMP-X300 is simple to specify and install in any configuration.

LoZ (4/8 Ω) and Hi-Z (70V or 100V) Output
The AMP-X300 is a 4-channel amplifier (up to 75 W per channel) which can also be configured for 3-channel bridged operation (up to 75 W per single ended channel and up to 150 W for the bridged channel), or 2-channel bridged operation (up to 150 W per channel), or 1 channel bridged operation (up to 300 W), with a choice of “LoZ” outputs to drive 4- or 8‑Ω speakers, or “Hi-Z” outputs to drive a distributed speaker system (70V or 100V). Balanced and unbalanced inputs are provided for connection to two stereo or four mono source(s) via detachable terminal blocks or RCA connectors.

NOTE: Each configuration can output up to its respective power rating.

Solid & Efficient Performance
The AMP-X300 is 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 ensures consistent performance at varying line voltages.

Convection Cooling
The efficient design ensures cool running operation and long‑term reliability. The AMP-X300 is high-density stackable with other Crestron modular amps, allowing multiple units to be installed vertically in an equipment rack without needing extra ventilation space.

Modular Design
The AMP-X300 is housed in a half-width rack-mountable form factor that can be installed individually or ganged together in a single rack space. The amplifier ships complete with all the hardware required for installation. Rack and surface mount parts are included, so no additional mounting accessories or rack shelves are required.

Whether mounting in a rack, attaching to a flat surface, or placing on a shelf, it is easy to combine two amplifiers into a single assembly.

Fully Protected
The AMP-X300 features protection against overheating, shorted or overloaded speaker lines, excessive input signals, and other faults. 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.

An energy-efficient design enables the AMP-X300 to meet demanding ENERGY STAR requirements. In addition to its high efficiency under operation, the AMP-X300 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-X300 can be configured to enter a low‑power standby state if no input signal is detected on either channel for 25 minutes. Signal detection has been optimized for sensitivity to improve response time when triggering the amplifier to the "on" state, allowing it to return to full operation within a half‑second the instant an input signal is detected. A remote input can be connected to a contact closure to place the amplifier outputs in controlled standby mode.

  • ENERGY STAR® certified power amplifier
  • 1 RU high design is surface or rack mountable
  • Half-rack width form factor, gangable with other next generation half-rack width form factor products
  • Configurable for either LoZ (4/8 Ω) or Hi-Z (70V or 100V) operation
  • Configurable for 4 x up to 75 W output, 2 x up to 150 W output, 1 x up to 300 W (bridged) output, and 2 x up to 75 W + 1 x up to 150 W(bridged) output
  • Low noise, low distortion, and high headroom
  • Comprehensive fault and speaker protection
  • Captive speaker connectors for secure and robust connectivity
  • Balanced and unbalanced inputs
  • Standby feature instantly turns on amplifier when input sensing circuitry detects an audio signal
  • Always On feature allows constant on connection with very low power consumption
  • Remote standby feature allows for instant on/off control over amplifier outputs via a simple contact closure input
  • Front panel power/standby, fault, and signal/clip indicators
  • Internal universal 100-240V power supply
Frequency Response 20 Hz to 20 kHz ±0.5 dB at 1 W
High-Pass Filter
(70V and 100V operation only)
-3 dB @ 80 Hz, -12 dB/octave
THD+N <0.1% at 1 kHz @ -3 dB full rated output power
S/N Ratio >103 dBA, 20 Hz to 20 kHz, balanced
Crosstalk -75 dB at 1 kHz
Input Sensitivity 1.23 Vrms, +4 dBu balanced;
0.316 Vrms, -10 dBV unbalanced;
For 150 W (8 Ω), 300 W (8 Ω Bridged), 300 W (70V/100V)
Gain 29 dB @ 8 Ω
Protection Over current, under voltage, over temperature, DC offset, extreme high
Go to Sleep Time 25 minutes with no signal present (when set to POWER SAVER)
Wake Time 0.5 s typical
Wake Threshold 0.44 mV typical
CH1-CH4 (2) 4‑pin 5.08 mm pitch, 12A plug with screw locking retainers;
Power amplifier output;
Wire Size: Terminals accept up to
12 AWG (3.31 mm2)

*NOTE: Output is direct‑coupled, not transformer isolated. *
AUDIO IN (UNBALANCED) (4) RCA connectors, female;
Unbalanced line‑level audio inputs (Summing on channels 1 + 2 and channels
3 + 4);
Maximum Input Level: 2.24 Vrms, +7 dBV (+9.2 dBu)
AUDIO IN (BALANCED) (4) 3-pin 3.5 mm detachable terminal block;
Balanced line‑level audio inputs;
Channel pairs 1 - 2 and 3 - 4 can each be configured to operate as stereo
channels or a downmixed mono channel;
Maximum Input Level: 7.75 Vrms, +20 dBu;
Input Impedance: 20k Ω
REMOTE (1) 2 pin 3.5 mm detachable terminal block;
Connect to dry contact closure to place amplifier in standby mode.
G (1) 6‑32 screw;
Chassis ground lug
100‑240V~ 1.2-0.6A
50/60 Hz
(1) IEC 60320 C14 main power inlet;
Mates with removable power cord, included
Controls & Indicators
PWR (1) White/Red LED;
White indicates amplifier is on and ready for use;
Red indicates amplifier is in standby
HI-Z (1) White LED;
Indicates when Hi-Z mode is enabled (70V or 100V);
Channels 1 - 2 and 3 - 4 are bridged and set to 70V or 100V operation
SIGNAL (4) White LEDs (one per input);
Indicates when an active input signal is present
FAULT (4) Red LEDs (one per input);
Indicates that the input channel is faulted or clipping
GAIN 1-4 (4) Screwdriver‑adjustable rotary controls, one per input channel;
Adjusts the input attenuation level for the corresponding input channel
LoZ Modes (2) Slide switches, one switch controlling channels 1 and 2, and one switch
controlling channels 3 and 4;
Selects stereo, summed, or bridged operation

- *STEREO: *The input signal received on each channel is sent to its
respective output for use in applications where left and right channel
separation is required. The four GAIN controls are independently adjustable.
- *SUM: *The input signals sent to a channel pair (1 + 2 or 3 + 4) are
summed and sent to their respective individual outputs. The four GAIN
controls are independently adjustable.
- *BRIDGE: *The input signals sent to a channel pair (1 + 2 or 3 + 4)
are summed and sent to a bridged output (1 + 2 or 3 + 4) for use in
high-power applications. The GAIN 1 control adjusts the bridged 1 + 2
output, and the GAIN 3 control adjusts the bridged 3 + 4 output.
Operations Mode (1) Slide switch;
Sets the amplifier for LoZ (4 or 8 Ω) or Hi-Z operation (70V or 100V)
Power Mode (1) Slide switch;
Selects "Power Saver" or "Always On" operation
Main Power 1.2-0.6A @ 100‑240VAC, 50/60 Hz
Power Consumption 75 W, (4 channels driven at 1/8th output power, 4 Ω);
16 W, idle (Hi-Z mode);
0.365 W, power saver (230VAC/50 Hz)
Temperature 41 to 104°F (5° to 40°C)
Humidity 10% to 90% RH (non‑condensing)
Heat Dissipation 107 BTU/hr @ 4 Ω, all channels driven at 1/8th output power;
55 BTU/hr, all channels idle (Hi-Z mode);
1.2 BTU/hr in standby
Chassis Metal, convection cooled (fanless)
Front Panel Metal, black finish with polycarbonate label overlay
Mounting Freestanding, surface mount, or 1/2 width 1 RU 19 in. rack mountable;
Gangable with other Crestron modular AMP series products (adhesive feet,
surface mounting, rack mounting, and ganging hardware all included)
Height 1.75 in. (44 mm) without feet;
1.83 in. (46 mm) with feet
Width 8.67 in. (220 mm) without mounting brackets
19.00 in. (483 mm) with mounting brackets
Depth 11.04 in. (280 mm)
5.3 lb (2.4 kg)
ENERGY STAR, ErP (1275/2008/EC), UL® 62368, FCC Class B residential use

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