Spread Spectrum Tech

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We are now selling the Spread Spectrum Technologies line. The fully balanced Ampzilla 2000 Second Edition power amps ($11,200 a pair) and Ambrosia preamp ($10.000 with phono stage and $8,495.00 without phono) are exceptional and truly world-class performers. They are the finest solid state products that we sell and quite competitive with products selling for triple their cost or more. Compare these to the best solid-state products made at any price. They are that good. They are now available in black with chrome insert as well as original blue with gold insert. SST products have the 5-year US factory warranty. There was an awesome review in the January 2012 Absolute Sound on the Ampzillas and Ambrosia. The Ampzilla 2000 MK2 and Ambrosia were named 'Product of the Year'.. They said they offered the same performance as super amps selling for $100,000.
They summed up with:

"The Ambrosia and Ampzilla are by any standard statement products that can take their place among the finest amps and preamps money can buy. At $15,000 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."

The new Thoebe II preamp and 220wpc Son of Ampzilla MK2 are superb performers with the lineage of the top of the line products at much more accessable prices.



                                                                                                                                Ampzilla 2000 II in black

Ampzilla 2000 MK2
On sale now at killer pricing-Call for our Black Friday deals

The Ampzilla 2000 Second Edition embodies state-of-the-art execution of a monoblock power amplifier. On the muscle side, the Ampzilla uses twelve 250-watt output devices and a 2000VA custom designed and built transformer for each monoblock. As well, each monoblock has 100,000µf of power supply filtering with dual rectification. Utilizing a completely new variation of our Forward Gain topology to achieve unprecedented improvements in linearity, the new circuit is so smooth that it can actually be listened to open loop without feedback.
The Ampzilla 2000 Second Edition is conservatively rated at 300 watts into 8Ωand 540 watts into 4Ω, and is stable below 1. With this much power, a pair can drive the most demanding speaker loads to thunderous levels as deftly as they can whisper the most delicate notes from higher sensitivity speakers.
The entire circuit is fully balanced from input to output and includes a unique new unbalanced-to-balanced converter for single-ended inputs. The captive industrial-grade 12 gauge power cord is selected specifically for the Ampzilla and is welded on for maximum conductivity and security, eliminating the hassle or expense of aftermarket cords. The Ampzilla 2000 Second Edition also sports a second set of binding posts for bi-wiring or -amplification. In sum, this proficient powerhouse is likely the last amplifier you’ll likely ever need.

  • The entire amplifier circuit (except the power output stages) is contained on one main drive card which also contains the input jacks. This ensures that the amplifier is upgradeable with future circuit improvements
  • 100% stable at any load angle 0-90 degrees, capacitive or inductive, regardless of wave shape
  • Extremely capable 300 watts into 8 ohms, 540 watts into 4 ohmsΩ
  • Fully balanced design
  • Protection power switch/circuit breaker 
  • Four DC power supply fuses with indicators
  • All-steel 14 gauge chassis with powder coat finish
  • Front panel “Peak”, “Thermal” and “Power” LED indicators
  • Turn-on delay and surge relay protection
  • Custom-designed power transformers, constructed domestically
  • Highest quality gold plated input and output jacks
  • Gold plated internal connectors
  • Captive 12 gauge power cord with welded connectors

  • Power Rating
    • 16Ω: Minimum 150 watts, 20Hz–20kHz
    • 8Ω: Minimum 300 watts, 20Hz–20kHz
    • 4Ω: Minimum 540 watts, 20Hz–20kHz
  • Input Impedance and Sensitivity
    • Unbalanced: ± 1 V RMS across 50kΩ for 300 watts into 8Ω
    • Balanced: ± 1 V RMS across ± 70kΩ for 300 watts into 8Ω
  • Frequency Response and Power Bandwidth at Rated Power
    • 8Ω: Better than ± .2 dB 20Hz–20kHz
    • 4Ω: Better than ± .3 dB 20Hz–20kHz
  • THD and IM Distortion: 4-16Ω less than .05% @ any power level up to rated at any frequency or combination of frequencies between 20Hz–20kHz
  • Damping Factor: Greater than 250 @ 20Hz
  • Noise: Better than -120dB relative to full rated power
  • Gain: 26dB (balanced and unbalanced input)
  • Weight: 58 lbs.
  • Dimensions 14 ⅜" L x 11" W x 7 ½" H
                                                                                                                        Ambrosia preamp in black
Ambrosia preamplifier
$8500.00 without phono
$9995.00 with phono

On sale now at killer pricing-Call for our low sale deals

The Ambrosia 2000 Second Edition preamplifier is a brilliant example of what a reference, full-featured, stereo preamplifier can be. This fully-balanced system nucleus features giant power supplies, an optional MM/MC phono stage, headphone amplifier, tone and balance controls and an ingenious remote control. Some recent improvements include redesigned internals for improved stability, lower noise and a new home theater bypass function.
There are no physical switches or controls of any kind in the signal path; the user interface is all electronic and galvanically isolated from the audio circuit. All functions are 100% microprocessor controlled and can be controlled from both the front panel as well as the remote control.
At 50 pounds, the Ambrosia outweighs many power amplifiers! Most of the weight is due to the huge low-EMI power transformer. It features four secondary windings that power each circuit section independently, and in the process, eliminate ground loops. In addition, 15 independent power supply regulators are employed throughout for immunity against AC mains fluctuations. Every attention to detail and function contributes to the final, undeniable conclusion: The Ambrosia is a sonic tour-de-force befitting the finest audio systems.
  • Four completely separate sets of transformer windings to power the four main preamp sections: moving coil, moving magnet, line, and display control. An additional 15 independent power supply regulators work in concert to eliminate ground loops and power supply noise.
  • Optional phonostage: RIAA equalized, completely separate circuits for both MC and MM cartridge sources. Each circuit has its own set of direct outputs which bypass the internal switching and each has a dedicated user-selectable low cut filter.
  • Highly configurable, sophisticated Menu system to tailor virtually every parameter of Ambrosia’s robust feature set to your satisfaction.
  • A total of nine pairs of inputs: 
    • Three main inputs (CD, TUN, AUX)
    • Two tape loop inputs
    • (Optional) phonostage inputs, one each for MM and MC 
    • One combination XLR jack that can be used balanced or unbalanced
    • Home Theater Bypass input
  • Outputs: Two pairs unbalanced and two pairs balanced.
  • Two headphone output jacks on the front panel powered by a unique, balanced power buffer idling at 4.5 watts per channel, capable of driving virtually any pair of headphones. The top output is a “switched” output: while in use, the Ambrosia will mute the line output to the connected amplifier.
  • Fully balanced design with a sophisticated circuit that generates almost no distortion. Moreover, all of the distortion by-products in the Ambrosia come only from the passive switches and volume control, which are virtually inaudible.
  • Highly customizable bass and treble controls.
  • 14 gauge robust powder coated steel chassis and anodized aluminum front panel.
  • Large, easy-to-read front LED display.
  • Optional custom, solid aluminum remote control allows for all of the functionality available on the front panel.


Ambrosia in blue

  • Input Gain
    • Phono: MC 64dB, 58dB, 52dB selectable gain; MM 42dB
    • Line: 20dB (or 5.5dB with internal jumper)
  • Tone Controls
    • ± 12dB nominal
    • Turnover points: Bass 200, 300, 400, 500Hz nominal; Treble 2kHz, 3kHz, 4kHz, 5kHz nominal
  • Maximum Output:10V RMS unbalanced; 20V RMS balanced
  • Output Impedance: 60Ω, all outputs
  • Input Impedance: 100kΩ balanced, 29kΩ unbalanced
  • Headphone Output: 1Ω output; power 475mA (300Ω)
  • Noise: MC: 70µV, (32µV with 400Hz–20kHz filter) at -0dB (max) gain setting
    • MM: 45µV, (20µV with 400Hz–20kHz filter)
    • Linestage: 10µV (Awt)
  • THD: .004% max inputs to main outputs @ 2V RMS output
  • Frequency Response
    • MC/MM Phono: ± 0.6dB max deviation (5mV in, RIAA Equalized, 20Hz–20kHz)
    • Linestage: ± 0.25dB max deviation (20Hz–20kHz)
  • Dimensions: 14 ¾" L x 17½" W x 7" H
  • Weight: 50 lbs.

Spread Spectrum's new Thoebe preamplifier and Son of Ampzilla MK2 are now shipping. The Son MK2 will be 220 watts per channel (350@ 4 ohms) at $4,200. The Thoebe is $4,200.00 with optional phono stage and DAC. It is 4,800.00 with the phono stage or $4,800.00 with DAC. With both it is $5200.00. These products are already big sellers at their moderate prices and offer performance close to the Ampzilla and Ambrosia for less than 1/2 their cost.

Thoebe MKII Preamplifier
$4800.00 with phono or DAC
$5200.00 wiht DAC & phono

Thoebe preamplifier

Impressive standard features include a highly transparent volume control, bass and treble tone controls, high/low gain settings and a world-class headphone amplifier. Additionally, the Thoebe II can be configured with available add-on options like a reference-level DAC and/or phonostage. The Thoebe II is about ultimate control and flexibility—the perfect preamplifier for any music source. 
Deriving its lineage from its award-winning mother, the Ambrosia 2000 Second Edition preamplifier, but boasting more than a few unique features in it’s own right, the Thoebe II is destined to be a classic in its own time.
  • Optional DAC and/or phonostage: 
    • DAC
      • ESS Sabre (9018) 32-bit DAC chip
      • Asynchronous, galvanically isolated USB input supports up to 32-bit 384kHz PCM and DSD64 + DSD128
    • Phonostage
      • Moving magnet discrete Class A design and newly developed RIAA optimized topology
  • Powerful and transparent built-in Class A headphone amplifier, standard
  • Digitally-controlled, channel independent, highly-advanced tone control
  • Remarkably transparent and innovative resistive-ladder type volume control unique to the Thoebe II
  • High/low gain setting
  • Phase and balance controls
  • Large, easy-to-read (and dimmable) LED display
  • Internal USB connection for any future software updates
  • Optional solid billet aluminum full-function remote control
  • Heavy gauge steel case and thick anodized aluminum faceplate
  • Inputs
    • Phono: 42dB
    • Line (balanced and unbalanced): 19dB high gain, 16dB  low gain
  • Tone Controls
    • ± 5dB nominal
    • Turnover points: Bass 300Hz; Treble 3kHz nominal
  • Maximum Output
    • 10V RMS unbalanced
    • 20V RMS balanced
  • Input Impedance
    • 62kΩ unbalanced
    • 100kΩ balanced
  • Output Impedance
    • 50Ω, all outputs
  • Headphone Output
    •  1Ω, 388mW (300Ω)
  • Noise (Awt)
    • MM: 70µV (22µV with 400-20kHz filter)
    • Line: 10µV unbalanced, 18µV balanced
  • THD (Awt, 20Hz-20kHz)
    • .006% max inputs to main outputs @ 1V RMS rated output
  • Frequency Response
    • Phono: ± 1.2dB max deviation (5mV in, RIAA Equalized, 20Hz–20kHz)
    • Line: 20Hz–20kHz, ± 0.25dB max deviation
  • Dimensions
    • 14⅝" L x 17½" W x 4⅛" H 
  • Weight:
    • Without phonostage: 25 lbs.
    • With phonostage: 28 lbs.
  • MSRP
    • Base $4200; with DAC or phono stage $4,800.00, with both $5,200.00

Son of Ampzilla MK2


Son of Ampzilla MK2

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
  • 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)
    • 16: Minimum 120 watts 20Hz–20kHz
    • 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