Spread Spectrum TechnologiesSon of Ampzilla MK2Spread Spectrum Technologies Son of Ampzilla MK2 220wpc baby Ampzilla- Another superb review outAsk us about 6 MONTHS NO PAYMENTS or INTEREST thru PayPal.We are glad to have the Son of Ampzilla MK2 available. It has been a long but worthwhile wait as this baby Ampzilla is 90% as good for 40% ...4195.00

Spread Spectrum Technologies Son of Ampzilla MK2 220wpc baby Ampzilla- Another superb review out [Expired]

no longer for sale

Ask us about 6 MONTHS NO PAYMENTS or INTEREST thru PayPal.

We are glad to have the Son of Ampzilla MK2 available. It has been a long but worthwhile wait as this baby Ampzilla is 90% as good for 40% of the cost. It puts out 220 watts into 8 ohms and 350 into 4 ohms. It is fully balanced and servo controlled and has XLR and RCA inputs. It uses a 2000VA transformer with 100,000 MF of capacitance. If you are looking for a state of the art amp at a reasonable cost this is it. On July 1st the amp goes to $4200.00 so now is  a great time to buy one.

We have one 3 day old RMAF show sample amp in perfect 10/10 shape for only $2,490.00

In the latest review from Hifi Plus they sum with:

"To sum up, my time with the Son of Ampzilla II has been both a revelation and a privilege. I have never found such a high performing solid-state amplifier at this price point. Generally, it would take a big step up in price to reach these sonic heights. It is also my first opportunity to spend significant time with a James Bongiorno design. But there are so many good designers and so little time to sample their work, I suppose! Highly Recommended."

Read the full review at: http://www.hifiplus.com/articles/spread-spectrum-technologies-son-of-ampzilla-ii-power-amplifier/

In the 10audio.cm review Jerry sums with:

"The Son of Ampzilla II performs at the top of its price level and above with a very neutral, near-characterless sound. I found it honors music at least as well as the Levinson No. 532h, Parasound JC-1, Manley Neo Classic 250 or Bryston 7BSST2. It seems more dynamic than the Levinson, lower distortion - in the audible transition from Class A to Class AB operation that helps to define the sound of the JC-1 - than the Parasound, a bit more extended in the treble than the Manley, and more realistic and true sounding than the Bryston monoblocks."

"More than most other preamps or amplifiers that I can recall under $10,000, these new components from SST deserve and actually demand your attention. All components have some intrinsic character, but the particular tendencies of these components are minor. I could live with either or both of these fine components. The SST Thoebe II preamplifier and Son of Ampzilla II amplifier are screaming bargains at their relatively modest asking prices."

Read the full review at: http://www.10audio.com/sst_thoebe2_soa2.htm

In the 6 moons review they said: "In the final analysis, the SoA handle might be just that one 't' shy of SotA. That'd be shorthand for state of the art and utterly brilliant at $3,500."

Read the full review at: http://www.6moons.com/audioreviews2/sst/2.html

In the Absolute Sound review of the Ampzilla Paul Seydor said:

"The Ambrosia and Ampzilla are by any standard statement products that can take their place among the finest amps and preamps that money can buy. At $17,000 ($8500.00 each) the combo is far from inexpensive, though that figure does include two excellent phono preamps and a headphone amplifier. Reflect, too, that there are competing electronics exceeding $100,000 that give you far less of everything. To those who find it impossible to believe components priced as reasonably as these can possibly be as good as those costing a whole lot more, I only say "they are". Please audition with your mind as open as your ears." If I were closing up shop tomorrow as a reviewer I would buy them and live happily ever after."

You get a full taste of the mono 330 watt Ampzilla's here in the new Son of Ampzilla MK2.

Read the full review at: http://www.10audio.com/sst_thoebe2_soa2.htm

"I had never experienced this effect with any other system. It was a continuance painted on a remarkably deep center stage. The [Son of] Ampzilla II turns out to complement all the flavors and nuance painted by the Thoebe II." — Ron Nagle, Enjoy The Music
"The [Son of] Ampzilla brings a burning sense of immediacy to the table—one that I don’t recall hearing from any other amplifier. When the CD ended, I realized I was breathless. It had been like I was at a concert. I wasn’t paying attention to anything except the music, but I did notice the [Son of] Ampzilla’s extremely deep soundstage and imaging to die for. The soundstage extended from around each side and from top to bottom. It was incredible." — Ed Morawski, Positive Feedback Online
From the website:

This redesigned Son is the third generation in concept and design and features many new ideas and improvements over previous generations. However, we made sure to respect and retain the traditional circuit topology that gives the Son its revered sonic signature. The end result is a masterful fusion of classic and cutting-edge.

The new Son boasts an exceedingly low noise floor and the same power supply capacity as in our flagship Ampzilla 2000 Second Edition amp. Another noteworthy feature is a unique grounding procedure that insures absolutely no ground loops. The measured power output of the new Son of Ampzilla II is a potent 220 watts/channel into 8Ω (double the original Son of Ampzilla). And the listening pleasure? Immeasurable.

  • Completely balanced input-to-output with full four-quadrant differential push-pull feedback from both sides of the speaker
  • Double the number of power transistors per channel as the original Son of Ampzilla
  • Completely servo-controlled
  • Combination input jack allows for on-the-fly switching between an unbalanced or balanced input
  • 2000 VA power supply capacity with totally independent windings and power supplies for each channel
  • 100,000 µfd of power supply capacitance in twin supplies isolated for each channel
  • Front end voltage amplifier power supplies are completely regulated
  • Thick steel chassis construction, powder coat finish. Anodized aluminum front panel
  • Gold plated input and output connectors
  • Turn-on surge relay 


  • Power Output (per channel)
    • 8Ω:  Minimum 220 watts 20Hz–20kHz
    • 4Ω:  Minimum 350 watts 20Hz–20kHz
  • Frequency Response:20Hz–20kHz  ± 0.1 dB
  • THD (Awt):< 0.03% 20Hz–20kHz @ 8Ω Full power
  • Noise (Awt):45µV
  • Input Impedance:130kΩ balanced, 65kΩ unbalanced
  • Gain: 27.5dB, 1.76v RMS for 220 watts 8Ω (either input)
  • Sensitivity:1.76 V
  • Weight: 40 lbs.
  • Dimensions: 9⅞" L x 17¼" W x 5⅝" H

This is the finest solid state amp that we sell for near this price. Compare this amp with any solid state amps made at anywhere near this cost as it is that good. We also have the matching Thoebe MKII preamp available. Call for package deals.

We accept PayPal, Visa, Discover and MasterCard as well as money orders.

Read our AudiogoN #1 rated feedback and call 770-667-5633 with questions or to order these killer amps.

Brands carried:
Acoustic Zen, April Music,  Audeze headphones, Audio Space, Auralic digital streamers & DAC'sBob Carver tube amplifiers & loudspeakers, Burson Audio, Cambridge, Creek, DSPeaker room correction devices, Emerald Physics speakers, amplifiers & USB DAC's, Epos, Exogal DAC's & amplifiers, Gallo, Graham Slee, HifiMan headphones, Jolida, LSA speakers, Lehmann phono stages, Marantz Reference, Micromega, Music Hall, Mu-So by Naim, Ortofon phono cartridges, Peachtree Audio, Project, PS Audio, Quad, Scansonic speakers, Silverline Audio, SOTA Turntables, Spread Spectrum Technologies Ampzilla Amps and preamps, Sumiko subwoofers & cartridges, TriangleArt turntables, Wireworld, Wyred 4 Sound, Wywires
Sales policies on the Underwood Hifi Inc. website at www.underwoodhifi.com
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Underwood Hifi, Inc.  Verified Dealer

Last 12 months

Member since November 2009