Legacy Audio Powerbloc4 Four Channel Power Amplifier

Brand: Legacy Audio | SKU: Powerbloc4 | UPC:

Price
$3,575
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Legacy Audio Powerbloc4 Four Channel Power Amplifier - Safe and Sound HQ

Legacy Audio Powerbloc4 Four Channel Power Amplifier

Price
$3,575

The Legacy Powerbloc4 is the perfect option for bi-amping speakers and high performance surround sound applications. 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.

Incredible performance in a small package...at a fair price.

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. Now, the Powerbloc4 provides the same performance across four channels! The Powerbloc4 hosts a pair of 30 amp power supplies, each powering two channels.

The benefits of multi-amplification are inarguable: lower intermodulation, greater headroom and freedom from harmful clipping. Yet concerns over cost, bulk and complexity have prevented users from enjoying these sub­stantial advantages. The Powerbloc4 can be used to bi-amp passive speakers alongside Legacy Audio's DSP based processor/crossovers to raise system performance to a new level. They can also be used in high performance theater applications to power center and surround channels.

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 ways:

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

    Stable into low impedances, the Powerbloc4 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 gear.

    The Legacy Powerbloc4 provides configuration flexibility with four channels of serious power... for serious listening.

    Brand Legacy Audio
    Model Powerbloc4
    Number of Channels 4
    Power Output 4 Ohm (Watts) 650
    Power Output 8 Ohm (Watts) 325
    RCA/XLR Inputs 4 / 4
    Amplifier Class Class D
    Damping Factor 1000
    Dimensions (H x W x D) 3" x 17" x 14"
    Weight (lbs) 15
    Warranty 3 Years

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    Price
    $3,575.00
    $6,050.00
    $8,700.00
    $1,189.99
    $999.99
    Rating
    1
    Brand
    Legacy Audio
    Legacy Audio
    Legacy Audio
    Musical Fidelity
    Arcam
    Number of Channels
    4
    4
    4
    4
    4
    Power Output at 4 Ohms (Watts)
    650
    660
    660
    175
    70
    Power Output at 8 Ohms (Watts)
    325
    610
    610
    90
    50
    Bridgeable Power Output (Watts)
    250 @ 4 Ohms, 180 @ 8 Ohms (2 Channel)
    RCA/XLR Inputs
    4 / 4
    1 / 1
    1 / 1
    4 / 4
    4 / 0
    Total Harmonic Distortion
    0.003% + N
    0.2%
    Damping Factor
    1000
    750
    750
    > 300
    Signal to Noise Ratio (dB)
    105
    106
    Dimensions H x W x D (Inches)
    3" x 17" x 14"
    5.8" x 17.5" x 15.6"
    5.8" x 17.5" x 15.6"
    4.33" x 17.1" x 17.1"
    4.13" x 17.0" x 12.8"
    Weight (lbs)
    15
    30
    38
    47.4
    22
    Warranty
    3 Years
    3 Years
    3 Years
    5 Years
    5 Years
    Based on 292 reviews
    93%
    (272)
    6%
    (17)
    1%
    (3)
    0%
    (0)
    0%
    (0)

    I just came back from visiting my big brother out of state who has a system in the mid 5 figure mark. When I came back I was inspired to upgrade but decided to wait. But then my Sub stopped working. I saw these on sale and thought “Is it meant to be?” Of course it was. I have these paired with a NAD T-778 streaming Qobuz. So far I am really enjoying these. I am hearing old songs as if they are new again. I have been listening to music more than ever. Bass is solid and highs are crisp. A truly immersive speaker. While I wouldn’t dare say they are as good as my big brother’s setup, they are close enough to put a smile on my face. I think they are a solid option for the price range. I am very satisfied and they are still breaking in.

    Absolute game changer! Love the device - terrific sound quality, intuitive interface and beautiful design!

    My amplifier arrived safely and has functioned wonderfully without issue. Thank you!

    Reference caliber exotic retro-futuristic LP spinner. Few rivals. Few are so flexible.

    I started years ago with an Ortofon Blue and this directly replaced a Mofi Mastertracker. I have coupled the LVB250 with a Darlington MB8 phono preamp and I can finally say that I am satisfied. This cartridge is exceptional and I don't think I'll ever need anything better.

    Really good service and extremely fast shipping. Also good price on receiver.

    Love the power of it it really feels like the gate way into high end it sounds beautiful happy with your service.Everything was all I hoped it would be thank you

    I bought the M2si integrated amplifier to drive my 2.7 magnepans. It does a very nice job of doing just that. That the amplifier is advertised as dipping gracefully or smoothly down to 2 Ohms was a primary point in the buy. Plus, Safe and Sound had a very good buy on this amplifier at $ 799.00. The build quality is very good and it has a large toroidal transformer to better handle high current and increase bass response. The preamp is full Class A and is a strong point for this Class A/B amplifier. Great buy! You can't have it all at this price though. The motorized volume knob does not have an easy viewing of where it is set as it is an inset indention without a light marker. Also, no standby power for the amp but it does have excellent heat management as the chassis has a colder side versus the hotter 2 channel amplifiers side. It is a fully discrete amplifier (wonderful, no integrated except for maybe op-amps at the preamp front). 5 year warranty, hard to beat. The amplifier has to be broken in as treble is at first very forward , but settles after a good break in period. The silver white looks very sexy and has a kind of older vibe. The M2si is British and has a brightness to it which can be toned down if you use the right speakers. Magnepans can change resistor values at the terminals or maybe even use specific DACs. No complaint about not having digital inputs at all since there are plenty of line level inputs as you can use outboards which gives you more opportunities any way. I have three different DACs into the line level inputs so all I have to do is switch out the single coax cable I want to change some of the response. I like a very well made Class A/B like this unit compared to the Class D which I have tried. Soundstage is wide and there is a lot of headroom compared to a lot of class D. If the M2si performs at 90% of what their end does like it has been said, then wow. Way to go Musical Fidelity.

    I have all Arcam equipment, the sound is fantastic. The price was amazing.. MusicLife app is so/so. Great piece of equipment..

    Safe and Sound is an excellent place to buy audio gear. This phono preamp is excellent, as sounds as advertised and the price was right!

    Amazing to deal with and best service on the planet

    So pleased with the quality as well as pretty much next day delivery. Great company

    Excellent CD player. Very impressed with the quality of the open box service. Absolutely impeccable, couldn’t tell from a brand new unit. Your customer service is also tops. Thanks for great shopping experience!

    A
    Marantz PM7000N Integrated Stereo Amplifier with HEOS Built-in
    Anonymous

    Amazing sound. Perfectly pairs with the components I have. Vinyl has never sounded better.

    Unit sounds great butyou can hear sound bleeding through the speakers and amp at zero volume. Also bind post so small myspade pugs either too large to accommodate. Unit turned off several times, not sure why possible connection but I could not figure out maybe due to heavy load speakers .Ssrvice and sales always fantastic!

    Super quick shipment and communications! Always great experience with Safe and Sound! The T8 is amazing! Big improvement over DMP 6!

    These outperform my previous speakers by a wide margin: more punch, more body, higher articulation. The vocals are mesmerizing.

    I was trying to scale down from a surround to a stereo setup and looking to upgrade DAC from Marantz av8805a. I have the Anthem mca 525 gen 2 amps and Sonus Faber Sonetto iii g2. It took about 70+ to burn in. It was an upgrade, but it is very subtle and hard to even notice unless really paying attention. This does fell like within the territory of diminishing returns. I don't know if it's because of my speakers, but it is the best speaker I can get given the size and weight for a small walkup apartment. However, I still decided to keep it because it is much lighter and runs cooler than the Marantz. It is also a little bit clearer (the Marantz sounded a little bit muddied, which I didn't even notice after years of using until I was comparing it with m3ai) and I noticed that it sounded louder at the same db level because of this (this means I can listen at lower db levels than I would with Marantz). I do miss the ability to fully control the Marantz via the android app. Overall a good DAC, but subtracting a little bit of points for the high price.

    I love it! I wish I would have bought one sooner!

    So far very satisfied with the speakers. Box arrived damaged but speaker was ok. Definitely an improvement over my 40 year old cerwin Vegas.

    I have found the Dynaudio Evoke series of speakers to be exactly what I have been looking for. They are on the "warm" side of the sound spectrum and have truly excellent fit and finish. I use them for both home theater and music.

    Amazing AVR!! DIRAC ART is a game changer. If you want the full DIRAC suite Denon or Marantz are your only option outside of much much more expensive equipment from Storm. I have an 7.2.4 set up and decided to treat myself to this AVR over the Denon X6800H. This AVR is gorgeous, even better in person than the photos.

    Great performance, beautiful menus, easy setup, both audyssey and Dirac options and support for just about every codec or processing need there is.