Legacy Audio Powerbloc2 Amplifier


Free Lifetime Technical Assistance
SKU: Powerbloc2




The Legacy Audio Powerbloc2 is a musical reference and
studio workhorse two channel amplifier.

Incredible Performance in a Small Package…at a Fair Price.

Audiophiles will appreciate the detail and resolution from
the ultra-wide 1.5 Hz to 70 kHz bandwidth. Professionals will love the
abundance of effort­less power. Characterized by a solid and taut low end with
fully developed shimmer in the top extremes, Powerbloc2 is one of the most
versatile refer­ence grade amplifiers ever.

The benefits of multi-amplification are inarguable; lower
intermodulaton, greater headroom and freedom from harmful clipping. Yet
concerns over cost, bulk and complexity have prevented users from enjoying
these sub­stantial advantages. The Powerbloc2 can be used in pairs with Legacy
Audio’s DSP based processor/crossovers to raise system performance to a new
level. They can also be used in pairs to bi-amp passive loudspeakers.

Numerous refinements to class D topologies in recent years
have resulted in improvements that not only match the neutrality of other high
end designs, but actually exceed typical performance parameters in several

  • High
    damping factor
  • Low
    output impedance
  • Wide
  • Huge
    dynamic range

Stable into low impedances, the Powerbloc2 achieves high
output without bridging and is exceptionally quiet. No transformer hum, fan
noise or long waits after power cycling for stabilization. Extremely stable
even when driven hard, the ultra-efficient Powerbloc amps feature short circuit
protection, thermal sensing and 12VDC triggering. Inputs are premium hand
soldered XLR balanced and gold-plated RCA inputs, as found only on the finest

The Legacy Powerbloc2 provides serious power… for serious

The Powerbloc technology is also available as the dual
monoblock Powerbloc2 ULTRA, or in a 4 channel version, the Powerbloc4.

“The promise of serious power at a fair price is
honestly made and fully delivered.” – Dan Kumin, Sound & Vision

Award-Winning Design

The Legacy Powerbloc2 (now ULTRA) is the recipient of both a
Sound & Vision Magazine Top Pick Award and a “Thumbs Up” Award
from Secrets of Home Theater & High Fidelity.

“All the power most will ever need, with the sound quality you want in a
slim, cool-running package.” – Dan Kumin, Sound & Vision

“The Powerbloc2 had finesse and muscle, imaging was excellent, and it had
complete control of my speakers, allowing me to hear what they can do. If you
are in the market for a two-channel sound system and you want these qualities
in your sound system, give the Legacy Powerbloc2 a closer look and listen. Your
speakers will thank you.” – Jim Milton, Secrets of Home Theater & High

  • Power
    per side:325 watts per channel x 2 @ 8 ohms, 650 watts per channel x 2 @ 4
    ohms, 475 watts @ 4 ohms both channels driven.
  • Inputs:2
    balanced XLR, 2 unbalanced RCA
  • Outputs:2
    pair 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, shared between channels
  • 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:16 lbs

Additional information

Weight 0.00000000 lbs


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.