U-A1 Extension Module

Ultra compact Class-D extension amplifier module containing a single high-power channel. The U-A1 extension amplifier module is dedicated for applications within the U-PRO Series.

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U-A1 Specifications
Power Ratings (RMS @ 1% THD @ 230Vac) 8 Ω 4 Ω Peak
Channel 1 245 W* 280 W* 1000 W
  • Output Circuitry
  • UMAC™ Class D - full bandwith PWM modulator with ultra low distortion
  • Output Voltage
  • 70 Vp / 140 Vpp (unloaded)
  • Amplifier Gain
  • 26 dB
  • Signal To Noise-Ratio
  • > 119 dB (A-weighted, 20 Hz - 20 kHz, 8 Ω load)
  • THD+N (typical)
  • < 0.05 % (20 Hz - 20 kHz, 8 Ω load, 3 dB below rated power)
  • Frequency Response
  • 20 Hz - 20 kHz (+0/-0.25 dB (8 Ω load, 3 dB below rated power)
  • Damping Factor
  • > 350, channel 1 (8 Ω load, 1 kHz and below)
  • Protection Circuits
  • Short circuit protection, DC protection, under voltage protection, temperature protection, overload protection
  • Readouts & Control options
  • Protect/Disable (mute), Temperature, Clip, Voltage, Auto Standby/Wake-up (3 timings)
  • Standby Consumption
  • < 0.25 W (Green Energy Star & ErP 1275/2008/EC compliant)
  • Dimensions
  • 37 x 70 x 90 mm / 1.45 x 2.8 x 3.5 inch.
  • Weight
  • 90g / 0.20lbs
  • * System limited by SMPS RMS Power Limit on the U-PRO amplifier module
    All specifications are typical values

    U-A1 Features
    Safety Approved - EMC Compliant

    Pascal amplifier modules are safety approved and verified for EMC compliance. CB test certificates are available for easy market approval.

    Audiophile Performance

    Pascal’s proprietary UMAC™ Class-D technology delivers unequalled audiophile specifications, including the highest dynamic range and the lowest distortion performance of any comparable pro audio amplifier. This makes the U-PRO series suitable for pro audio applications and for use in high-end Hi-Fi and AV products.

    Unmatched Effiency

    Like the L, S & T-PRO Series, the U-PRO Series boasts the world’s best system efficiency, minimizing the requirement for heat sinks and cooling. The cool operation also contributes to the amplifiers’ long term reliability.

    Interface compatible with L-PRO, T-PRO, S-PRO and U-PRO

    The U-PRO Series features compatible pin interfacing and identical output voltages to the higher current capable, popular L-PRO, S-PRO and T-PRO modules; thus the front-end electronics of both the L-PRO, S-PRO, T-PRO and U-PRO Series are plug-and-play compatible.

    Extreme Dynamic Power Ratings

    The U-PRO and U-A1 Series features unique dynamic power ratings, due to the extremely high voltage rails relative to its RMS power output.

    Dedicated for self-powered speakers

    The U-A1 Series configured with the U-PRO Series feature set and form factor uniquely optimize it as a dedicated poweer solution for self-powered sub, 2-way and 3-way loudspeakers.

    File name Document size Version Last updated
    U-Series Flyer
    PDF (497.80 KB) 1.0 25-09-2019
    U-A1 Data Sheet
    PDF (1.14 MB) 1.0 02-10-2019