250W Monoblock Amplifier

rx mono

250W Monoblock Amplifier


rx mono

New product


250W Monoblock Amplifier View larger

RX250.1 packs a lot of power into a compact design.  Feel the bass with 250 watts into 2 ohms powering your subs so they can deliver hard hitting lows to round out your musical experience.

  • Class A/B Topology
  • Power Rating: 150w x 1 @ 4 ohms, 250w x 1 @ 2 ohms
  • Dimensions: 9.4” L x 8.4” W x 2.1” H

Premium Build Quality for Ultra Performance

  • Legendary Phoenix Gold massive unregulated power supply built for dynamic headroom and to drive low 1ohm impedance loads
  • Audio Precision Quality Control Verification

Chassis Features

  • Audiophile BiPolar Output Transistors for efficient high current push
  • Surface Mount Component Technology, double sided PCB
  • High Level Inputs for easy OEM Integration
  • Direct Insert Power and Speaker Terminals
  • Remote Bass Level Control (RBC) port for connecting the remote subwoofer level control, which allows up to 20dB of volume adjustment and better control of the low pass signal
    • RBCF (Flush-Mount Remote Bass Level Control) included
  • RMD port allows you to add a remote monitoring display, giving you a visual of the voltage of your system

Total Control of Your Music Output

Variable filters on each channel allow you to fine tune your musical output to the precision you demand. All crossovers feature aluminum shaft precision potentiometers for exact crossover frequency selection.

  • Low Pass Crossover Range of 30Hz to 300Hz, you get quality lower bass
  • Subsonic Crossover Range of 10Hz to 55Hz to eliminate unwanted ultra low frequencies, improving the efficiency of your subwoofer
  • Bass Boost 0 to +18dB
  • Variable phase output can be adjusted 0 to 180 degrees. This adjustment can help achieve better “up front” bass, by enhancing your sub bass and mid bass transition and resolve subwoofer cancellation problems in certain installations.  Resulting in tight, articulate bass that blends perfectly into the rest of your audio experience


Frequency Response

± 1dB from 20Hz to 300Hz

Signal to Noise Ratio


Low Pass Crossover

12dB per Octave

Subsonic Filter

12dB per Octave

Low Pass Crossover Range

30Hz to 300Hz

Subsonic Crossover Range

10Hz to 55Hz

Bass Boost @ 45Hz

0 to +18dB

Low Level Input Range

200 millivolts to 8 volts

Lowest Recommend Load

2 Ohms

Typical Efficiency


Damping Factor

Greater than 200

Variable Phase Adjustment

0 to 180 Degrees

RMS Power Output

150w x 1 @ 4 ohms

250w x 1 @ 2 ohms



Recommend Power Wire Fuse: 20a

Power/Ground Wire Size: 8 Gauge



Amplifier Gain Adjustments
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RX Phoenix Gold Amp Manual
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