PowerBloc2 ULTRA
Best dual monoblock for audiophiles driving demanding, high-performance speaker systems.
Experience unparalleled audio fidelity with the Legacy Audio PowerBloc2 ULTRA, a dual monoblock amplifier engineered for serious listening. Its independent power supplies significantly boost current capability, delivering exceptional power to drive demanding speakers. Utilizing advanced ICEpower modules, it provides effortless, wide dynamic range with a taut low end and clear highs. This amplifier offers stable operation into low impedances and quiet performance, making it ideal for bi-amping passive loudspeakers or pairing with DSP processors for a truly reference-grade audio experience.
$2600.00
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1719
#421 in Power Amplifiers
Price vs Category Average
-69%
Below average
Power Output
3252865024
/ watts per channel x @ ohms, watts per channel x @ ohms
Who it's for
- Owners prioritizing long-term equipment durability and stability
- Audiophiles powering demanding, low-impedance speaker systems
- Listeners seeking pure, uncolored musical reproduction
Who should skip it
- Users with limited rack space or weight restrictions
- Installers working in confined or poorly ventilated cabinets
- Budget-conscious buyers seeking entry-level amplification
Performance breakdown
Power Delivery
Effortlessly drives demanding speakers with massive headroom and current reserves.
Signal Clarity
Ultra-low distortion ensures a pristine, transparent path for your music.
Impedance Stability
Maintains composure and control even when driving difficult, low-impedance loads.
Dynamic Range
Captures the full scale of recordings from delicate whispers to thunderous crescendos.
Thermal Efficiency
Class D design runs cool without the need for noisy cooling fans.
System Integration
Flexible connectivity options make it a seamless fit for reference-grade setups.
Key Specs
Power Output
325 watts per channel x 2 @ 8 ohms, 650 watts per channel x 2 @ 4 ohms
Peak Output
Up to 1000 watts per channel into Focus SE speakers
Frequency Response
1.5 Hz to 70 kHz
Total Harmonic Distortion (THD)
0.005% at rated output
Dimensions
3" H x 17" W x 14" D
Unit Weight
13 lbs
Inputs
2 balanced XLR, 2 unbalanced RCA
Outputs
2 pairs gold plated five-way binding posts
Features
- Dual monoblock design for independent channel performance
- Enhanced current capability for powerful audio
- High-current ICEpower modules for superior sound
- Effortless power delivery for demanding speakers
- Ultra-wide bandwidth for detailed sound reproduction
- Stable operation into low impedances
- Quiet operation, free from fan or transformer noise
- Versatile for bi-amping passive loudspeakers
What customers say
The Legacy Audio PowerBloc2 ULTRA earns overwhelmingly positive feedback as a reference grade component. Audiophiles consistently praise its immense power reserves, delivering pristine clarity and control even with demanding loudspeakers. Reviewers highlight exceptional sonic transparency, noting the amplifier allows source material dynamics to shine through unimpeded. Specific accolades focus on tight, articulate bass control and the rendering of a vast, three dimensional soundstage. Users report an effortless and authoritative system performance upgrade. The robust build quality reinforces its premium investment status. While expensive, the consensus is that the performance gains and reliability offer substantial value for serious listeners seeking uncompromising amplification.
Know before you buy
The dual monoblock design means each channel has its own independent power supply. This prevents crosstalk between the left and right channels, resulting in better stereo separation and improved clarity during complex musical passages.
Yes, the PowerBloc2 ULTRA is designed specifically for demanding speakers. With 650 watts per channel into 4 ohms and high-current ICEpower modules, it maintains stability and control even when speakers present difficult impedance loads.
Absolutely. The unit operates silently without the need for internal cooling fans or large transformers that can cause mechanical hum, making it an excellent choice for critical, low-volume listening environments.
Yes, the PowerBloc2 ULTRA is highly versatile and well-suited for bi-amping. Its stable, high-current output ensures that both the high-frequency and low-frequency drivers receive clean, consistent power.
The amplifier features both balanced XLR and unbalanced RCA inputs, allowing for flexible connectivity with a wide range of preamplifiers. For speaker connections, it utilizes two pairs of gold-plated five-way binding posts.
Yes, the unit is equipped with short-circuit protection and thermal sensing. These features monitor the amplifier's status to prevent damage in the event of an electrical fault or overheating.
Still have a question?
Ask Hayley anything about this product before you decide.