Powerbloc2 ULTRA

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  • Regular price $2,600.00


Legacy's PowerBloc2 ULTRA is a dual monoblock design featuring independent power supplies that double the current capability of the original PowerBloc2. With the added heat sinking of separate ICEpower modules, each channel can deliver peaks of 1000 watts into speakers like the Focus SE. These high-current modules are the same ones found in the incredible Focus XD.


  • Ultra-Wide Bandwidth: Audiophiles will appreciate the detail and resolution from the ultra-wide 1.5 Hz to 70 kHz bandwidth.

  • Effortless Power: Professionals will love the abundance of effortless power.

  • Versatile Performance: Solid and taut low end with fully developed shimmer in the top extremes make Powerbloc2 ULTRA one of the most versatile reference-grade amplifiers.

  • Multi-Amplification Benefits: Lower intermodulation, greater headroom, and freedom from harmful clipping.

  • Improved Class D Topologies: Enhancements result in a high damping factor, low output impedance, wide bandwidth, and huge dynamic range.

  • Stable and Quiet: Stable into low impedances, high output without bridging, no transformer hum, fan noise, or long waits after power cycling for stabilization.


  • Short Circuit Protection

  • Thermal Sensing

  • 12VDC Triggering

  • Premium Inputs: Hand-soldered XLR balanced and gold-plated RCA inputs.

  • Stable Performance: Exceptionally stable even when driven hard.

Reviews & Articles

  • Check out what audiophiles and professionals have to say about the Powerbloc2 ULTRA in our reviews and articles section.

Image Gallery

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The Powerbloc2 ULTRA can be used in pairs with Legacy Audio's DSP-based processor/crossovers to elevate system performance. They can also be used in pairs to bi-amp passive loudspeakers. The Legacy Powerbloc2 ULTRA provides serious power... for serious listening.

For those looking for other options, the Powerbloc2 ULTRA is also available in a lower output version - the Powerbloc2, and a 4-channel version, the Powerbloc4.


  • Product ManualDownload Manual
  • Power per side:325 watts per channel x 2 @ 8 ohms, 650 watts per channel x 2 @ 4 ohms
  • Inputs:2 balanced XLR, 2 unbalanced RCA
  • Outputs:2 pairs gold plated safety approved five-way binding posts
  • Damping Factor:1,000< 1kHz
  • Voltage Gain:27.4 dB
  • Dynamic Range:117 dB
  • Peak Current:30 amps/channel
  • THD:0.005% at rated output
  • TIM:0.0045% at rated output
  • Input Sensitivity:2.1 Volts to rated power
  • Dimensions:3" H x 17" W x 14" D
  • Unit Weight:13 lbs
  • Shipping Dimensions:9" H x 22" W x 18 D
  • Shipping Weight:18 lbs

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